A fast opening and closing zero-friction spherical sealing butterfly valve

Abstract

The present invention provides a fast opening and closing zero-friction spherical sealing butterfly valve, which belongs to the technical field of zero-friction spherical sealing butterfly valves. The top end sleeve of the valve stem is provided with a valve body limit sleeve, and the top surface of the rotating end is provided with an opening and closing mechanism. The opening and closing adjustment component on the opening and closing mechanism has the function of adjusting the rising height of the valve body limit sleeve, so that after the valve stem has risen in a straight stroke, the butterfly plate body can automatically retract to disengage the seal of the zero-friction spherical surface, and then continue to rotate the opening and closing adjustment component to automatically switch to angular stroke steering through the two surfaces of the pressure panel and the valve body limit sleeve at a specific position, so that the butterfly plate body can be linked to the butterfly plate seat group to perform a maximum angle of 90°. The straight stroke and angular stroke operations of the butterfly valve can be performed uninterruptedly, so that the opening and closing of the butterfly valve can be achieved by a one-time twist, thereby realizing rapid opening and closing of the butterfly valve, and the operation is fast and convenient.

Description

Technical Field

[0001] The invention relates to a fast-opening and closing zero-friction spherical sealing butterfly valve, belonging to the technical field of zero-friction spherical sealing butterfly valves. Background Art

[0002] Chinese patent number CN220816571U discloses a gate valve, comprising a valve body provided with a guide port and a valve plate movable relative to the guide port to close or open the guide port, the valve body being provided with a guide ring movable along its axial direction and an elastic component driving the guide ring to move toward one side of the valve plate, the central hole of the guide ring constituting the guide port, and also comprising a valve stem, the valve stem being movable up and down between a first position and a second position, the valve plate being rotatably arranged in the valve body between an open position and a closed position, the valve plate in the closed position being arranged opposite to the guide port, the valve stem being movably connected to the valve plate, the valve stem in the first position being able to push the valve plate in the closed position to move toward the guide port to close the guide port, and the valve stem in the second position being able to drive the valve plate to rotate between the open position and the closed position.

[0003] From the above, it can be known that the opening and closing of the gate valve is operated in two steps. First, a straight stroke operation is performed to seal the zero friction spherical surface between the valve plate and the guide port or to disengage the zero friction spherical surface seal. When operating the straight stroke, the upward movement of the valve stem must be observed. Then, the valve stem is rotated to perform an angular stroke operation to rotate the valve plate between the open position and the closed position so that the valve plate can be fully opened. The above opening and closing operation steps of the gate valve are relatively large, the operation is cumbersome, and the efficiency is very low. In view of the above shortcomings, the present invention proposes a fast opening and closing zero friction spherical sealing butterfly valve. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention aims to provide a fast-opening and closing zero-friction spherical sealing butterfly valve to solve the existing problems.

[0005] In order to achieve the above-mentioned purpose, the present invention is realized through the following technical scheme: a fast-opening and closing zero-friction spherical sealing butterfly valve, whose structure includes a valve body, and a butterfly plate seat group is embedded in the middle of the valve body cavity, and a butterfly plate sealing component is arranged in the middle of the butterfly plate seat group, the butterfly plate sealing component is in sealing contact with the movable zero-friction spherical surface on the right side of the valve body cavity, the top surface of the valve body is connected with a rotating end, the upper end of the butterfly plate seat group is threaded through the middle of the rotating end, a valve body sealing spherical surface is opened on the right side of the valve body cavity, and the butterfly plate seat group is composed of a steering seat group, a butterfly plate The pressure seat group and the valve stem are sleeved together, the rotating end includes a rotating seat body, and two tapered roller bearings and a valve stem sleeve are sleeved in the upper end cavity of the rotating seat body, and a bearing pressure cover for pressing a tapered roller bearing at the top end is also sleeved in the upper end cavity of the rotating seat body, a straight stroke sliding port is vertically penetrated through the front side of the rotating seat body, and an angular stroke swing port is horizontally opened on the right side of the upper end of the straight stroke sliding port wall, a valve body limiting sleeve is sleeved on the top end of the valve stem, an opening and closing mechanism is arranged on the top surface of the rotating end, and the valve body limiting sleeve is located in the opening and closing mechanism cavity;

[0006] The butterfly plate sealing assembly comprises a butterfly plate body, and a sealing ring is sleeved on the right peripheral edge of the butterfly plate body, and the right side of the sealing ring is locked and pressed by a pressing plate and a hexagonal bolt;

[0007] The opening and closing mechanism includes a bottom plate and an opening and closing adjustment component, and the bottom plate is sleeved on the upper edge of the top surface of the rotating seat body, and the opening and closing adjustment component is sleeved on the upper end of the valve stem sleeve and is locked and fixed by a fixing nut, and the outer edge sleeve of the top surface of the bottom plate is provided with a shell for wrapping the opening and closing adjustment component, and the top surface of the opening and closing adjustment component is movably sleeved with a hand wheel for opening and closing rotation;

[0008] The opening and closing adjustment component includes a connecting plate, and an inner driving sleeve is provided on the top surface of the connecting plate, and the valve body limit sleeve is sleeved on the lower end of the inner driving sleeve cavity, and an angular stroke pressing piece is sleeved on the upper end of the inner driving sleeve cavity, and a spacing adjustment piece is abutted on the top surface of the angular stroke pressing piece, and an outer driving sleeve is sleeved on the outer side of the inner driving sleeve, and the right side of the spacing adjustment piece extends through the right side surface of the outer driving sleeve;

[0009] When the opening and closing adjustment component is manually twisted, the valve stem and the valve body limit sleeve on the valve stem sleeve first rise in a straight stroke to drive the butterfly plate sealing component to disengage the zero-friction spherical seal. In addition, when the top surface of the valve body limit sleeve rises to abut against the bottom surface of the angular stroke pressure piece, it continues to twist and automatically switches to an angular stroke to open the butterfly plate body at a maximum angle of 90°.

[0010] A further improvement is that a first sealing spherical surface is provided on the right peripheral edge of the butterfly plate body, and a sealing ring groove for sealing ring fitting is provided on the right side of the first sealing spherical surface, and a bolt hole is provided in the middle of the right side surface of the butterfly plate body;

[0011] A second sealing spherical surface is provided on the periphery of the sealing ring, and the sealing ring is made of rubber;

[0012] When the sealing ring is sleeved in the sealing ring sleeve groove, the second sealing spherical surface is set higher than the first sealing spherical surface by 0.1-0.5 mm.

[0013] A further improvement is that the upper end of the valve stem sleeve is provided with a hexagonal sleeve edge for fitting the connecting disc, and the upper end of the hexagonal sleeve edge is provided with an external thread for locking and fixing a fixing nut, and a valve stem threaded port is provided through the middle of the top surface of the valve stem sleeve for threaded connection to the upper end of the valve stem.

[0014] As a further improvement, a sleeve opening is provided in the middle of the bottom plate, and a sleeve edge for the housing sleeve is provided at the periphery of the top surface of the bottom plate, and a plurality of mounting screw holes are provided at intervals on the sleeve edge.

[0015] A further improvement is that a hexagonal socket opening matching the hexagonal socket edge is provided through the middle of the top surface of the connection plate.

[0016] As a further improvement, a limit sleeve opening is provided in the middle of the top surface of the inner driving sleeve, and two pressure piece slots are aligned on the left and right walls of the upper end of the limit sleeve opening, and a spring lower sleeve opening is provided in the middle of the bottom of the two pressure piece slots.

[0017] A further improvement is that the angular travel pressure piece includes a pressure panel, and two card edges for inserting into two pressure piece slots are arranged on the left and right sides of the pressure panel, and a spring upper sleeve opening is opened in the middle of the bottom surface of the two card edges, and an adjustment push block is arranged in the middle of the top surface of the pressure panel, and a first inclined section is opened on the top surface of the adjustment push block, and springs are sleeved in the two spring upper sleeve openings, and the lower end of the spring is sleeved in the spring upper sleeve opening.

[0018] A further improvement is that the spacing adjustment member includes an adjustment seat, and an adjustment push block sleeve groove for adjusting the lifting and sliding of the push block is opened in the middle of the bottom surface of the adjustment seat, and a transverse sliding groove is opened in the middle of the top of the adjustment push block sleeve groove, a transverse push block is movably sleeved on the transverse sliding groove, and a second inclined section that is movably abutted against the first inclined section is opened on the bottom surface of the transverse push block, an adjustment screw hole is opened through the right groove wall of the adjustment push block sleeve groove, and an adjustment screw rod is laterally arranged on the right side surface of the transverse push block, and the right end of the adjustment screw rod is threadedly connected to the adjustment screw hole.

[0019] As a further improvement, a coupling sleeve opening is provided in the middle of the top surface of the outer driving sleeve, and an adjusting screw member opening for the right end of the adjusting screw member to pass through is provided on the right side surface of the outer driving sleeve.

[0020] A further improvement is that a coupling opening is provided through the middle of the top surface of the shell;

[0021] The hand wheel component is formed by integrating a hand wheel body and a coupling member.

[0022] A further improvement is that the valve body, steering seat assembly, butterfly plate pressure seat assembly, valve stem, rotating seat body and butterfly plate body are all prior art, please refer to patent number CN220816571U, and the specific structure and function are not described one by one here.

[0023] A further improvement is that the valve stem is composed of a valve stem body and a handle, and the handle is used to prevent the valve stem from rotating when performing a straight stroke in the straight stroke slide.

[0024] The beneficial effects of the present invention are:

[0025] The invention provides a fast opening and closing zero-friction spherical sealed butterfly valve. The opening and closing mechanism composed of a base plate, an opening and closing adjustment component, a fixing nut, an outer shell, and a handwheel component and the design of a valve body limit sleeve on the butterfly plate sealing component and the top of a rotating end constitute a fast opening and closing zero-friction spherical sealed butterfly valve. The opening and closing adjustment component on the opening and closing mechanism has the function of adjusting the rising height of the valve body limit sleeve, so that after the valve stem has risen in a straight stroke, the butterfly plate body can automatically retract to disengage the zero-friction spherical seal, and then continue to rotate the opening and closing adjustment component to automatically switch to angular stroke steering through the pressure panel and the valve body limit sleeve at a specific position to engage the two surfaces, so that the butterfly plate body can be driven by the butterfly plate seat group to turn and open at a maximum angle of 90°. The straight stroke and angular stroke operations of the butterfly valve can be performed uninterruptedly, so that the opening and closing of the butterfly valve can be achieved by a one-time twist, thereby realizing fast opening and closing of the butterfly valve, and the operation is fast and convenient.

[0026] In addition, through the butterfly plate sealing assembly composed of the butterfly plate body, the sealing ring, the pressure plate and the hexagonal bolts, the zero-friction spherical sealing of the valve body sealing sphere and the second sealing sphere is achieved by soft and hard matching, and the sealing effect is better. It can avoid that if there is fine sand on the two sealing spheres, the spheres are easily scratched as in the prior art where two hard spheres are used to resist each other with zero friction, resulting in water leakage after the butterfly valve is closed, thereby improving the service life of the butterfly valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of a fast-opening and closing zero-friction spherical sealing butterfly valve of the present invention;

[0028] Figure 2 It is a schematic diagram of the structure of a fast-opening and closing zero-friction spherical sealing butterfly valve of the present invention;

[0029] Figure 3 This is a schematic diagram of the internal structure of a fast-opening and closing zero-friction spherical sealing butterfly valve of the present invention;

[0030] Figure 4 This is a schematic diagram of the structure of the butterfly plate sealing assembly of the present invention;

[0031] Figure 5 It is a schematic diagram of the rotating end structure of the present invention;

[0032] Figure 6 It is a schematic diagram of the opening and closing mechanism structure of the present invention;

[0033] Figure 7 It is a schematic diagram of the internal structure of the opening and closing mechanism of the present invention;

[0034] Figure 8 This is a schematic diagram of the internal structure of the opening and closing regulating component of the present invention;

[0035] Fig. 9 It is a schematic diagram of the structure of the inner driving sleeve, the angular travel pressing member and the spacing adjusting member of the present invention. DETAILED DESCRIPTION

[0036] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0037] See also Figure 1-Figure 9The present invention provides a fast-opening and closing zero-friction spherical sealing butterfly valve structure, which includes a valve body 1, and a butterfly plate seat group 2 is embedded in the middle of the valve body 1 cavity, and a butterfly plate sealing component 3 is arranged in the middle of the butterfly plate seat group 2, the butterfly plate sealing component 3 is in sealing contact with the movable zero-friction spherical surface on the right side of the valve body 1 cavity, the top surface of the valve body 1 is connected with a rotating end 4, the upper end of the butterfly plate seat group 2 is threaded through the middle of the rotating end 4, and a valve body sealing spherical surface is provided on the right side of the valve body 1 cavity, the butterfly plate seat group 2 is composed of a steering seat group 21, a butterfly plate pressure seat group 22 and a valve stem 23, the rotating end 4 includes a rotating seat body 41, and the upper end of the rotating seat body 41 is sleeved with a Two tapered roller bearings 42 and a valve stem sleeve 43, the upper end cavity of the rotating seat body 41 is also sleeved with a bearing pressure cover 44 for pressing a tapered roller bearing 42 at the top, the front side of the rotating seat body 41 is vertically penetrated with a straight stroke sliding port 411, and the upper right side of the straight stroke sliding port 411 is horizontally opened with an angular stroke swing port 412, the top end of the valve stem 23 is sleeved with a valve body limiting sleeve 5, the top surface of the rotating end 4 is provided with an opening and closing mechanism 6, the valve body limiting sleeve 5 is located in the opening and closing mechanism 6 cavity, the butterfly plate sealing assembly 3 includes a butterfly plate body 31, and the right side periphery of the butterfly plate body 31 is sleeved with a sealing ring 32, and the right side of the sealing ring 32 is passed through a pressure plate 33 The opening and closing mechanism 6 comprises a bottom plate 61 and an opening and closing adjustment component 62, and the bottom plate 61 is sleeved on the upper edge of the top surface of the rotating seat body 41, and the opening and closing adjustment component 62 is sleeved on the upper end of the valve stem sleeve 43 and is locked and fixed by a fixing nut 63, and the outer edge sleeve of the top surface of the bottom plate 61 is provided with a shell 64 for wrapping the opening and closing adjustment component 62, and the top surface of the opening and closing adjustment component 62 is movably sleeved with a hand wheel 65 for opening and closing rotation, the opening and closing adjustment component 62 comprises a connecting disk 621, and the top surface sleeve of the connecting disk 621 is provided with an inner drive sleeve 622, and the valve body limit sleeve 5 is sleeved on the lower end of the inner drive sleeve 622 cavity, and the inner drive sleeve 622 is provided with a sleeve 64. An angular stroke pressing piece 623 is sleeved on the upper end of the sleeve 622 cavity, and a spacing adjustment piece 624 is pressed against the top surface of the angular stroke pressing piece 623. An outer driving sleeve 625 is sleeved on the outer side of the inner driving sleeve 622, and the right side of the spacing adjustment piece 624 extends through the right side surface of the outer driving sleeve 625. When the opening and closing adjustment component 62 is manually twisted, the valve stem 23 and the valve body limiting sleeve 5 on the valve stem sleeve 43 first rise in a straight stroke to drive the butterfly plate sealing component 3 to disengage from the zero-friction spherical seal. In addition, when the top surface of the valve body limiting sleeve 5 rises to the point where it is pressed against the bottom surface of the angular stroke pressing piece 623, the twisting continues and automatically switches to an angular stroke to open the butterfly plate body 31 at a maximum angle of 90°.

[0038] A first sealing spherical surface 311 is provided on the right side periphery of the butterfly plate body 31, and a sealing ring groove 312 for fitting the sealing ring 32 is provided on the right side of the first sealing spherical surface 311. A bolt hole 313 is provided in the middle of the right side surface of the butterfly plate body 31, and a second sealing spherical surface 321 is provided on the periphery of the sealing ring 32. The sealing ring 32 is made of rubber. When the sealing ring 32 is fitted into the sealing ring groove 312, the second sealing spherical surface 321 is set higher than the first sealing spherical surface 311 by 0.1-0.5mm.

[0039] The upper end of the valve stem sleeve 43 is provided with a hexagonal sleeve edge 431 for fitting with the connecting plate 621, and the upper end of the hexagonal sleeve edge 431 is provided with an external thread 432 for locking and fixing the fixing nut 63. The middle part of the top surface of the valve stem sleeve 43 is provided with a valve stem threaded port 433 for threaded connection to the upper end of the valve stem 23.

[0040] A sleeve hole 611 is provided in the middle of the bottom plate 61 , and a sleeve edge 612 for the housing 64 to be inserted is provided at the periphery of the top surface of the bottom plate 61 , and a plurality of mounting screw holes 613 are provided at intervals on the sleeve edge 612 .

[0041] A hexagonal socket opening 6211 matching with the hexagonal socket edge 431 is formed through the middle of the top surface of the connection plate 621 .

[0042] The inner driving sleeve 622 has a limit sleeve opening 6221 in the middle of the top surface, and two pressure piece slots 6222 are aligned on the left and right walls of the upper end of the limit sleeve opening 6221 , and a spring lower sleeve opening 6223 is formed in the middle of the bottom of the two pressure piece slots 6222 .

[0043] The angular travel pressure piece 623 includes a pressure panel 6231, and two clamping edges 6232 for inserting into two pressure piece slots 6222 are arranged on the left and right sides of the pressure panel 6231, and a spring upper sleeve 6233 is opened in the middle of the bottom surface of the two clamping edges 6232, and an adjustment push block 6234 is arranged in the middle of the top surface of the pressure panel 6231, and a first inclined section 6235 is opened on the top surface of the adjustment push block 6234, and a spring 6236 is sleeved in the two spring upper sleeves 6233, and the lower end of the spring 6236 is sleeved in the spring upper sleeve 6233.

[0044] The spacing adjustment member 624 includes an adjustment seat 6241, and an adjustment push block sleeve groove 6242 for adjusting the lifting and sliding of the push block 6234 is opened in the middle of the bottom surface of the adjustment seat 6241, and a horizontal slide groove 6243 is opened horizontally in the middle of the top of the adjustment push block sleeve groove 6242, and a horizontal push block 6244 is movably mounted on the horizontal slide groove 6243, and a second inclined section 6245 movably abutted against the first inclined section 6235 is opened on the bottom surface of the horizontal push block 6244, an adjustment screw hole 6246 is opened through the right groove wall of the adjustment push block sleeve groove 6242, and an adjustment screw member 6247 is horizontally arranged on the right side surface of the horizontal push block 6244, and the right end of the adjustment screw member 6247 is threadedly connected to the adjustment screw hole 6246.

[0045] A coupling sleeve opening 6251 is provided in the middle of the top surface of the outer driving sleeve 625 , and an adjusting screw member opening 6252 for the right end of the adjusting screw member 6247 to pass through is provided on the right side surface of the outer driving sleeve 625 .

[0046] A coupling opening 641 is formed through the middle of the top surface of the housing 64 , and the hand wheel component 65 is formed by an integrated hand wheel body 651 and a coupling 652 .

[0047] Working principle:

[0048] The installation and adjustment method of the valve body limit sleeve 5 in the opening and closing mechanism 6 is as follows: first, the bottom plate 61 is nested in the upper end of the rotating seat body 41 and welded and fixed; then, the connecting plate 621 is sleeved on the hexagonal sleeve edge 431 and locked and fixed with the fixing nut 63; then, the valve body limit sleeve 5 is nested in the top end of the valve stem 23; then, the inner drive sleeve 622, the angular stroke pressing piece 623, and the spacing adjustment piece 624 are pre-assembled and then sleeved together on the top surface of the connecting plate 621, so that the valve body limit sleeve 5 is located at Under the pressure panel 6231, the outer drive sleeve 625 is finally installed on the top side of the connecting plate 621. When installing, it is necessary to align the adjusting screw 6247 with the adjusting screw through-hole 6252. Finally, the adjusting screw through-hole 6252 is twisted to move the horizontal push block 6244 to the right. Under the action of the upward elastic force of each spring 6236, the pressure panel 6231 rises to the highest position in the cavity of the limit sleeve through-hole 6221, which is the initial position of the pressure panel 6231.

[0049] Then, the limit adjustment of the pressure panel 6231 is carried out. First, the coupling 652 on the hand wheel 65 is inserted into the coupling sleeve opening 6251 and rotated, and the connecting plate 621 and the valve stem sleeve 43 are linked to rotate, so that the valve stem 23 and the valve body limit sleeve 5 rise in the limit sleeve opening 6221. When the handle on the valve stem 23 rises in the linear stroke sliding opening 411 to the intersection with the angular stroke swing opening 412, the valve body limit sleeve 5 is about to be in a position against the surface of the pressure panel 6231. Then, the adjusting screw 6247 is twisted again to make the horizontal push block 6244 move left, and the first oblique section 6235 and the second The movable and counteracting movement of the inclined section 6245 causes the pressure panel 6231 to descend, and the bottom surface of the pressure panel 6231 and the top surface of the valve body limit sleeve 5 are counteracted, and finally the horizontal position of the pressure panel 6231 is adjusted to limit the pressure panel 6231. Because the pressure panel 6231 is always pushed upward by the springs 6236, when the valve body limit sleeve 5 is lowered and disengaged, the pressure panel 6231 will not have the problem of following the decline. Finally, the outer shell 64 is put on the outer side of the top surface of the bottom plate 61 to wrap and protect the opening and closing adjustment component 62, and the installation and limit adjustment of the valve body limit sleeve 5 in the opening and closing mechanism 6 are completed.

[0050] The quick opening operation mode of the zero friction spherical sealing butterfly valve of the present invention is that the hand wheel 65 is first inserted into the coupling sleeve opening 6251 through the coupling opening 641 and twisted, so that the opening and closing adjustment component 62 as a whole drives the valve stem sleeve 43 to rotate, so that when the handle on the valve stem 23 rises in the linear stroke sliding opening 411 to the intersection with the angular stroke swing opening 412, only the butterfly plate body 31 is retracted in the valve body 1 cavity, and the valve body sealing spherical surface and the first sealing spherical surface 311 and the second sealing spherical surface 321 are engaged. The disengagement of the zero-friction spherical seal is a prior art and will not be explained in detail here. At this time, the top surface of the valve body limit sleeve 5 and the bottom surface of the pressure panel 6231 are in abutment with each other. When the twisting continues, the valve body limit sleeve 5 can no longer rise. In this way, through the mutual engagement of the two surfaces, it will automatically switch to an angular stroke linkage to open the butterfly plate body 31 at a maximum angle of 90°. When closing, the hand wheel 65 is twisted in the opposite direction. The principle is the same as above, and the butterfly valve can be quickly opened and closed.

[0051] In addition, the present invention also optimizes and improves the butterfly plate sealing assembly 3, which is mounted on the butterfly plate body 31 through a sealing ring 32, a pressure plate 33 and a hexagonal bolt 34. The second sealing spherical surface 321 is set higher than the first sealing spherical surface 3110.3mm, and the sealing ring 32 is made of rubber material, so that the butterfly plate body 31 and the valve body 1 are sealed against each other in a soft and hard matching manner when performing zero-friction spherical sealing. This has a better sealing effect and can prevent fine sand from existing between the valve body sealing spherical surface and the second sealing spherical surface 321 when closing, thereby avoiding the problem of scratches on each sealing spherical surface caused by hard sealing.

[0052] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0053] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A fast-opening and closing zero-friction spherical sealing butterfly valve, the structure of which comprises a valve body (1), wherein a butterfly plate seat group (2) is embedded in the middle of the valve body (1) cavity, and a butterfly plate sealing component (3) is arranged in the middle of the butterfly plate seat group (2), the butterfly plate sealing component (3) is in sealing contact with a movable zero-friction spherical surface on the right side of the valve body (1) cavity, the top surface of the valve body (1) is connected to a rotating end (4), the upper end of the butterfly plate seat group (2) is threaded through the middle of the rotating end (4), the right side of the valve body (1) cavity is provided with a valve body sealing spherical surface, the butterfly plate seat group (2) is composed of a steering seat group (21), a butterfly The plate pressure seat group (22) and the valve stem (23) are sleeved together, the rotating end (4) includes a rotating seat body (41), and two tapered roller bearings (42) and a valve stem sleeve (43) are sleeved in the upper end cavity of the rotating seat body (41), and a bearing pressure cover (44) is also sleeved in the upper end cavity of the rotating seat body (41) for pressing a tapered roller bearing (42) at the top end, and a linear stroke sliding opening (411) is vertically opened on the front side of the rotating seat body (41), and an angular stroke swing opening (412) is horizontally opened on the right side of the upper end of the wall of the linear stroke sliding opening (411), characterized in that: The top end of the valve stem (23) is sleeved with a valve body limiting sleeve (5), the top surface of the rotating end (4) is provided with an opening and closing mechanism (6), and the valve body limiting sleeve (5) is located in the cavity of the opening and closing mechanism (6); The butterfly plate sealing assembly (3) comprises a butterfly plate body (31), and a sealing ring (32) is sleeved on the right peripheral edge of the butterfly plate body (31), and the right side of the sealing ring (32) is locked and pressed by a pressing plate (33) and a hexagonal bolt (34); The opening and closing mechanism (6) comprises a bottom plate (61) and an opening and closing adjustment component (62), wherein the bottom plate (61) is sleeved on the upper edge of the top surface of the rotating seat body (41), and the opening and closing adjustment component (62) is sleeved on the upper end of the valve stem sleeve (43) and is locked and fixed by a fixing nut (63), and a shell (64) for wrapping the opening and closing adjustment component (62) is provided on the outer edge of the top surface of the bottom plate (61), and a hand wheel component (65) is movably sleeved on the top surface of the opening and closing adjustment component (62) for opening and closing rotation; The opening and closing adjustment component (62) comprises a connecting plate (621), and an inner driving sleeve (622) is sleeved on the top surface of the connecting plate (621), and a valve body limiting sleeve (5) is sleeved on the lower end of the inner driving sleeve (622) cavity, and an angular stroke pressing piece (623) is sleeved on the upper end of the inner driving sleeve (622) cavity, and a spacing adjustment piece (624) is pressed against the top surface of the angular stroke pressing piece (623), and an outer driving sleeve (625) is sleeved on the outer side of the inner driving sleeve (622), and the right side of the spacing adjustment piece (624) extends through the right side surface of the outer driving sleeve (625); When the opening and closing adjustment component (62) is manually twisted, the valve stem (23) and the valve body limit sleeve (5) on the valve stem sleeve (43) first rise in a straight stroke to drive the butterfly plate sealing component (3) to disengage the zero-friction spherical seal. In addition, when the top surface of the valve body limit sleeve (5) rises to abut against the bottom surface of the angular stroke pressing member (623), the valve body limit sleeve (5) continues to be twisted and automatically switches to an angular stroke to open the butterfly plate body (31) at a maximum angle of 90°. A limit sleeve opening (6221) is provided in the middle of the top surface of the inner driving sleeve (622), and two pressure piece slots (6222) are aligned on the left and right walls of the upper end of the limit sleeve opening (6221), and a spring lower sleeve opening (6223) is provided in the middle of the bottom of the two pressure piece slots (6222); The angular travel pressing member (623) comprises a pressing panel (6231), and two clamping edges (6232) for inserting into two pressing member clamping grooves (6222) are arranged on the left and right sides of the pressing panel (6231), and a spring upper sleeve opening (6233) is provided in the middle of the bottom surface of the two clamping edges (6232), and an adjusting push block (6234) is arranged in the middle of the top surface of the pressing panel (6231), and a first oblique section (6235) is provided on the top surface of the adjusting push block (6234), and a spring (6236) is sleeved in the two spring upper sleeve openings (6233), and the lower end of the spring (6236) is sleeved in the spring upper sleeve opening (6233); The spacing adjustment member (624) comprises an adjustment seat (6241), and an adjustment push block sleeve groove (6242) for adjusting the lifting and sliding of the push block (6234) is provided in the middle of the bottom surface of the adjustment seat (6241), and a transverse sliding groove (6243) is transversely provided in the middle of the groove top of the adjustment push block sleeve groove (6242), a transverse push block (6244) is movably sleeved on the transverse sliding groove (6243), and a second oblique section (6245) movably abutting against the first oblique section (6235) is provided on the bottom surface of the transverse push block (6244), an adjustment screw hole (6246) is provided through the right groove wall of the adjustment push block sleeve groove (6242), and an adjustment screw member (6247) is transversely provided on the right side surface of the transverse push block (6244), and the right end of the adjustment screw member (6247) is threadedly connected to the adjustment screw hole (6246).

2. A fast opening and closing zero-friction spherical sealing butterfly valve according to claim 1, characterized in that: A first sealing spherical surface (311) is provided on the right peripheral edge of the butterfly plate body (31), and a sealing ring groove (312) for the sealing ring (32) to fit is provided on the right side of the first sealing spherical surface (311), and a bolt hole (313) is provided in the middle of the right side surface of the butterfly plate body (31); A second sealing spherical surface (321) is formed on the periphery of the sealing ring (32), and the sealing ring (32) is made of rubber; When the sealing ring (32) is sleeved in the sealing ring sleeve groove (312), the second sealing spherical surface (321) is set higher than the first sealing spherical surface (311) by 0.1-0.5 mm.

3. A fast opening and closing zero-friction spherical sealing butterfly valve according to claim 2, characterized in that: The upper end of the valve stem sleeve (43) is provided with a hexagonal sleeve edge (431) for fitting the connecting plate (621), and the upper end of the hexagonal sleeve edge (431) is provided with an external thread (432) for locking and fixing the fixing nut (63), and a valve stem threaded opening (433) for threaded connection of the upper end of the valve stem (23) is provided through the middle of the top surface of the valve stem sleeve (43).

4. A fast opening and closing zero-friction spherical sealing butterfly valve according to claim 3, characterized in that: A sleeve hole (611) is provided in the middle of the bottom plate (61), and a sleeve edge (612) for the housing (64) sleeve is provided on the top surface of the bottom plate (61), and a plurality of mounting screw holes (613) are provided at intervals on the sleeve edge (612).

5. A fast opening and closing zero-friction spherical sealing butterfly valve according to claim 4, characterized in that: A hexagonal sleeve opening (6211) adapted to the hexagonal sleeve edge (431) is formed through the middle of the top surface of the connection plate (621).

6. A fast opening and closing zero-friction spherical sealing butterfly valve according to claim 5, characterized in that: A coupling sleeve opening (6251) is provided in the middle of the top surface of the outer driving sleeve (625), and an adjusting screw member opening (6252) for the right end of the adjusting screw member (6247) to pass through is provided on the right side surface of the outer driving sleeve (625).

7. A fast opening and closing zero-friction spherical sealing butterfly valve according to claim 6, characterized in that: A connecting member opening (641) is provided through the middle of the top surface of the shell (64); The hand wheel component (65) is formed by integrally forming a hand wheel body (651) and a coupling member (652).

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