A hand-operated butterfly valve with hydraulic seal structure

Abstract

The application relates to the technical field of butterfly valves, in particular to a manual butterfly valve with a hydraulic sealing structure, which comprises a butterfly valve body, a fluid channel in the butterfly valve body is blocked by cooperation of a hard ring body and a butterfly plate rotatable in the hard ring body, the hard ring body is fixed on the inner wall of the fluid channel of the butterfly valve body, a valve rod is arranged in the butterfly valve body to drive the butterfly plate to rotate, the butterfly plate comprises a disc-shaped butterfly plate eccentrically fixed on one side of the valve rod, a soft ring plate and a hard ring cylinder movably sleeved outside the disc-shaped butterfly plate, a door disc arranged on the disc-shaped butterfly plate and facing the fluid, a core rod axially movable at the position of the axis in the valve rod and a pressure-changing ring arranged on the disc-shaped butterfly plate and facing away from the fluid, the hard ring cylinder moves, the hard ring cylinder and the disc-shaped butterfly plate cooperate to clamp the soft ring plate, the soft ring plate is gradually flattened, the contact pressure between the periphery of the soft ring plate and the hard ring body is increased, and the hydraulic sealing performance of the butterfly valve is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of butterfly valves, in particular to a manual butterfly valve with a hydraulic sealing structure. BACKGROUND

[0002] The manual butterfly valve is a valve device applied to gas pipelines in the sulfuric acid industry, a sulfur burning process in a sulfur-burning sulfuric acid system, and chemical, petrochemical, and pharmaceutical fields, main body materials of the manual butterfly valve include gray cast iron, stainless steel, aluminum alloy, etc., and the manual butterfly valve controls pipeline medium opening and closing through rotation of a disc-shaped butterfly plate. In the traditional technology, a soft ring body is arranged around the disc-shaped butterfly plate, the soft ring body and a hard ring body fixed on the inner wall of a passage of the butterfly valve are in contact and sealing, the butterfly plate intercepts fluid in the passage, how to improve the contact and sealing performance between the soft ring body and the hard ring body, and how to improve the safety interception capability of the butterfly valve are technical research directions.

[0003] If the periphery of the soft ring body is expanded, the contact pressure between the soft ring body and the hard ring body can be improved, but the disc-shaped butterfly plate is difficult to open and close, the friction between the soft ring body and the hard ring body is increased, the soft ring body can be damaged after multiple opening and closing, and then the sealing effect is affected, if the soft ring body is automatically expanded after abutting and adhering to the hard ring body, the contact pressure between the soft ring body and the hard ring body is further increased, and then the friction problem can be avoided, and therefore the application provides the manual butterfly valve with the hydraulic sealing structure. SUMMARY

[0004] The application aims to provide the manual butterfly valve with the hydraulic sealing structure to solve the expansion and friction problem of the soft ring body in the background technology.

[0005] To achieve the above-mentioned purpose, the application provides the following technical scheme: a manual butterfly valve with a hydraulic sealing structure, comprising a butterfly valve body, a fluid passage in the butterfly valve body is blocked by cooperation of a hard ring body and a butterfly plate device rotating in the hard ring body, the hard ring body is fixed on the inner wall of the fluid passage of the butterfly valve body, a valve rod is further arranged in the butterfly valve body to drive the butterfly plate device to rotate, and the butterfly plate device comprises:

[0006] A disc-shaped butterfly plate eccentrically fixed on one side of the valve rod, a soft ring plate movably sleeved outside the disc-shaped butterfly plate, and a hard ring cylinder, the disc-shaped butterfly plate drives the soft ring plate to contact and seal with the hard ring body, the hard ring cylinder and the disc-shaped butterfly plate clamp and press the soft ring plate to cause the soft ring plate to expand and deform, and then the sealing between the hard ring body and the soft ring plate is increased;

[0007] A door disc arranged on the disc-shaped butterfly plate and facing the fluid, and a core rod axially moving at the axial position of the valve rod, a manual switch is arranged on the butterfly valve body to control the movement of the core rod, and the core rod and the door disc are synchronously moved through a fixed support;

[0008] The variable pressure ring device is arranged on the side of the disc butterfly plate opposite to the fluid, and when the hard ring body and the soft ring plate are sealed, the variable pressure ring device applies a pushing force to the hard ring cylinder, and when the hard ring body and the soft ring plate are leaked, the variable pressure ring device releases the hard ring cylinder and then applies a pushing force again, and the soft ring plate is expanded to contact the hard ring body to eliminate the leakage.

[0009] The variable pressure ring device comprises:

[0010] An output ring part for applying an axial pushing force to the hard ring cylinder, and a path part for driving the output ring part;

[0011] A pipeline part penetrating through the disc butterfly plate at one end, and the pipeline part pressurizes the driving path part by collecting fluid pressure.

[0012] The variable pressure ring device further comprises:

[0013] A monitoring ring part for detecting the leakage of the joint ring gap of the hard ring body and the soft ring plate, and a swing driving plate establishing linkage between the monitoring ring part and the path part;

[0014] A partition assembly connected to one side of the path part, an energy storage device for driving the partition assembly, a trapping assembly for releasing kinetic energy in the energy storage device, and an L-shaped reverse adjusting frame establishing linkage between the trapping assembly and the monitoring ring part.

[0015] The output ring part comprises a plurality of evenly arranged pressure foot groups contacting one side of the hard ring cylinder, an outer ring sheet gear driven by all the pressure foot groups, and a door-shaped frame for limiting and supporting the outer ring sheet gear, and the door-shaped frame is fixed on the disc butterfly plate.

[0016] The pressure foot group comprises an L-shaped foot plate for pushing the hard ring cylinder, a split worm gear engaged and driven by a row of teeth arranged on the L-shaped foot plate, and a foot support fixed on the disc butterfly plate, the foot support supports the L-shaped foot plate and the split worm gear, and the end of the split worm gear is engaged and driven by the fixed gear and the outer ring sheet gear.

[0017] The path part comprises a double-sided gear engaged and driven by an arc-shaped rack fixed on the outer ring sheet gear, a T-shaped rack body driven on one side of the double-sided gear, a last position frame for limiting the moving direction of the T-shaped rack body, and a spring interposed between the T-shaped rack body and the last position frame, the last position frame is fixed on the disc butterfly plate, and one end of the double-sided gear is movably sleeved in the through hole of the last position frame by arranging a shaft body.

[0018] The path component further comprises an L-shaped rack body distributed at one end of the T-shaped rack body, a conical plate separated between the L-shaped rack body and the T-shaped rack body, a first position frame for limiting the moving direction of the L-shaped rack body, a three-control shaft supported on the first position frame, and a first position swing column fixed at one end of the three-control shaft, wherein an arc-shaped rack is arranged on the first position swing column to mesh with the L-shaped rack body, the first position frame is fixed on the disc-shaped butterfly plate, a pointed end is arranged on the conical plate to contact the end slope of the L-shaped rack body and the end slope of the T-shaped rack body respectively, and the other end of the three-control shaft is fixedly connected with the swing driving plate.

[0019] The pipeline component comprises a collection pipe penetrating through the disc-shaped butterfly plate at one end, an arc-shaped pipe fixedly connected at the other end of the collection pipe, a disc column moving in an arc shape in the arc-shaped pipe, and a pressure boosting frame fixedly connected with the disc column, wherein an arc-shaped column is arranged on the pressure boosting frame to pass through a ring plate arranged at the end of the arc-shaped pipe, a gap is left between the disc column and the arc-shaped pipe, and a gap is left between the arc-shaped column of the pressure boosting frame and the ring plate of the arc-shaped pipe, one end of the pressure boosting frame is fixedly connected with the three-control shaft, and the gate disc blocks the water inlet port of the collection pipe.

[0020] The monitoring ring component comprises an outer ring plate gear and an inner ring plate gear arranged on one side of the disc-shaped butterfly plate, a plurality of ring-arranged control plate units transmitted between the outer ring plate gear and the inner ring plate gear, and a light plate connected at one end of the control plate unit, wherein a plurality of convex seats are arranged on the disc-shaped butterfly plate to limit and support the outer ring plate gear, arc-shaped racks are arranged on the outer ring plate gear to mesh with the arc-shaped racks arranged on the swing driving plate, and the L-shaped reverse adjusting frame is fixedly connected with the inner ring plate gear.

[0021] The light plate blocks one side of the butt joint ring gap of the soft ring plate and the hard ring body after moving, and the fluid leakage through the ring gap causes the light plate to swing.

[0022] The control plate unit comprises a stake seat fixed on the disc-shaped butterfly plate, a rack push column sliding through the square hole of the stake seat, a branch gear transmitted between the rack push column and the outer ring plate gear, a hinge shaft and a long shaft gear supported at one end of the rack push column, a unit shaft transmitted on one side of the long shaft gear, and a unit roller transmitted between the unit shaft and the inner ring plate gear, the hinge shaft and the long shaft gear are vertically transmitted, the hinge shaft is fixedly connected with the light plate, the stake seat supports the branch gear, the unit shaft and the unit roller, and the stake seat further supports the inner ring plate gear.

[0023] The partition assembly comprises a double-control stake frame fixed on the disc-shaped butterfly plate, an anchor-shaped plate sliding on the double-control stake frame, a wheel shaft supported on the double-control stake frame, and a cam disc fixed on the wheel shaft, wherein one end of the double-control stake frame slides through the prismatic hole of the conical plate through a fixed U-shaped frame, the cam disc is composed of two half disc bodies with different sizes in abutment, and the edge of the cam disc is in contact with an arc surface arranged at one end of the anchor-shaped plate.

[0024] The energy storage device releases power to drive the axle to rotate, the trapping assembly releases the interception to the energy storage device to make the energy storage device release power, the trapping assembly comprises a switch frame fixed on the disc butterfly plate, a blocking plate hinged at one end of the switch frame, and a pull-back spring plate for driving the blocking plate to reset swing, the pull-back spring plate is fixed on the switch frame, an L-shaped reverse adjusting frame pushes a slope plate arranged on the blocking plate to cause the blocking plate to swing, and then the interception to the energy storage device is released.

[0025] Compared with the prior art, the beneficial effects of the present application are:

[0026] 1. The hard ring body and the butterfly plate are in contact and sealed by rotating the valve rod, then the intercepted fluid part in the butterfly valve channel is injected into the pipeline part, the internal pressure of the fluid part is converted into driving force, the hard ring cylinder is moved through subsequent transmission, the hard ring cylinder and the disc butterfly plate cooperate to clamp the soft ring plate, the soft ring plate is gradually flattened, the contact pressure between the periphery of the soft ring plate and the hard ring body is increased, and then the hydraulic sealing performance of the butterfly valve is improved.

[0027] 2. The present application detects whether the fluid leaks through the contact ring gap between the hard ring body and the soft ring plate by monitoring the ring part, if leakage occurs, the leakage fluid impacts the monitoring ring part, and then triggers the compensation mechanism, finally the hard ring cylinder and the disc butterfly plate are first separated and then approached, the soft ring plate is re-adjusted and pressed in this process to eliminate the leakage problem caused by uneven deformation of the soft ring plate. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a schematic diagram of the main structure of the present application.

[0029] Figure 2 It is a structural schematic diagram of the present application.

[0030] Figure 3 It is a structural schematic diagram of the hard ring body.

[0031] Figure 4 It is a schematic diagram of the door disc position.

[0032] Figure 5 It is a schematic diagram of the soft ring plate position.

[0033] Figure 6 It is a schematic diagram of the pressure ring position.

[0034] Figure 7 It is a structural schematic diagram of the pressure ring.

[0035] Figure 8 It is a structural schematic diagram of the output ring part.

[0036] Figure 9 It is a structural schematic diagram of the pressure foot group.

[0037] Figure 10Structure diagram of path component.

[0038] Figure 11 Structure diagram of pipeline component.

[0039] Figure 12 Structure diagram of three-control shaft.

[0040] Figure 13 Structure diagram of collection tube position.

[0041] Figure 14 Structure diagram of monitoring ring component.

[0042] Figure 15 Structure diagram of control plate unit.

[0043] Figure 16 Structure diagram of partition assembly.

[0044] Figure 17 Structure diagram of energy storage device.

[0045] In the figure: butterfly valve body 1, hard ring body 2, butterfly plate device 3, valve rod 4, disc-type butterfly plate 5, soft ring plate 6, hard ring cylinder 7, door disc 8, core rod 9, sleeve 901, compression spring 902, pressure ring device 10, output ring 11, path component 12, pipeline component 13, monitoring ring component 14, swing drive plate 15, energy storage device 16, output worm 161, side-axis 162, split curve plate 163, barrel cover 164, pile shaft 165, ring moving column 166, clockwork 167, trapping assembly 17, L-shaped reverse adjusting frame 18, partition assembly 19, presser foot group 20, outer ring piece gear 21, door-shaped frame 22, foot frame 23, L-shaped foot plate 24, split position worm 25, three-control shaft 26, first-position swing column 27, first-position frame 28, L-shaped rack body 29, conical plate 30, last-position frame 31, T-shaped rack body 32, spring 33, double-sided gear 34, collection tube 35, disc column 36, arc-shaped tube 37, pressure-increasing frame 38, outer ring plate gear 39, control plate unit 40, lightweight plate 41, inner ring plate gear 42, rack push column 43, long-axis gear 44, split-out gear 45, unit shaft 46, pile base 47, unit roller 48, hinged shaft 49, anchor-shaped plate 50, double-control pile frame 51, cam disc 52, wheel shaft 53, blocking plate 54, back-pulling spring 55, switch frame 56. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the technical solutions in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0047] Please refer to Figures 1 to 17 The application provides a technical scheme: a hand-operated butterfly valve with a hydraulic sealing structure, comprising a butterfly valve body 1, a fluid passage in the butterfly valve body 1 being blocked by a hard ring body 2 and a butterfly plate 3 rotating in the hard ring body 2, the hard ring body 2 being fixed on the inner wall of the fluid passage of the butterfly valve body 1, and the butterfly valve body 1 further comprising a valve rod 4 for driving the butterfly plate 3 to rotate, the butterfly plate 3 comprising:

[0048] a disc-shaped butterfly plate 5 eccentrically fixed on one side of the valve rod 4, a soft ring plate 6 movably sleeved outside the disc-shaped butterfly plate 5, and a hard ring cylinder 7, the disc-shaped butterfly plate 5 driving the soft ring plate 6 to contact and seal the hard ring body 2, the hard ring cylinder 7 and the disc-shaped butterfly plate 5 clamping and pressing the soft ring plate 6 to cause the soft ring plate 6 to expand and deform, thereby increasing the sealing between the hard ring body 2 and the soft ring plate 6;

[0049] a door disc 8 provided on the disc-shaped butterfly plate 5 and facing the fluid, and a core rod 9 axially moving at the axial position of the valve rod 4, a hand-operated switch being provided on the butterfly valve body 1 to control the movement of the core rod 9, and the core rod 9 and the door disc 8 being synchronously moved through a fixed support;

[0050] a variable pressure ring 10 provided on the disc-shaped butterfly plate 5 and facing away from the fluid, the variable pressure ring 10 applying a pushing force to the hard ring cylinder 7 when the hard ring body 2 and the soft ring plate 6 are in abutting sealing, the variable pressure ring 10 releasing the hard ring cylinder 7 and then reapplying the pushing force when the hard ring body 2 and the soft ring plate 6 are in abutting leakage, and the soft ring plate 6 eliminating the leakage by reexpanding to contact the hard ring body 2, it is pointed out here that even if the hard ring cylinder 7 and the disc-shaped butterfly plate 5 limit the soft ring plate 6, the soft ring plate 6 is in a natural full state, and after the soft ring plate 6 and the hard ring body 2 are completely in abutting connection, a seal can still be formed between them, that is, a conventional sealing technology, the application applies a pushing force to the hard ring cylinder 7 through the variable pressure ring 10, the hard ring cylinder 7 and the disc-shaped butterfly plate 5 press the soft ring plate 6, and the soft ring plate 6 becomes more flat, so that the soft ring plate 6 expands at the edges to increase the sealing between the soft ring plate 6 and the hard ring body 2, the timing of the expansion of the soft ring plate 6 occurring after the hard ring body 2 and the butterfly plate 3 are completely in abutting connection, the disc-shaped butterfly plate 5 being perpendicular to the fluid conveying direction, and then sufficient fluid pressure being formed to drive the variable pressure ring 10 to operate.

[0051] Reference Figure 7 It is understood that the variable pressure ring 10 comprises:

[0052] an output ring part 11 applying an axial pushing force to the hard ring cylinder 7, and a path part 12 driving the output ring part 11; and a pipeline part 13 penetrating the disc-shaped butterfly plate 5 at one end, the pipeline part 13 increasing the pressure of the transmission path part 12 by collecting fluid pressure.

[0053] Reference Figure 7 It is understood that the variable pressure ring 10 further comprises:

[0054] The monitoring ring part 14 is used to detect the leakage of the joint ring seam of the hard ring body 2 and the soft ring plate 6, and the swing drive plate 15 is established between the monitoring ring part 14 and the path component 12; the partition assembly 19 connected on one side of the path component 12, the energy storage device 16 used to drive the partition assembly 19, the trapping assembly 17 used to release the kinetic energy in the energy storage device 16, and the L-shaped reverse adjusting frame 18 established between the trapping assembly 17 and the monitoring ring part 14.

[0055] Reference Figure 8 It is understood that the output ring part 11 includes a plurality of evenly ringed presser groups 20 in contact with one side of the hard ring barrel 7, an outer ring sheet gear 21 driven by all the presser groups 20, and a door-shaped frame 22 used to limit and support the outer ring sheet gear 21, and the door-shaped frame 22 is fixed on the disc-shaped butterfly plate 5, two door-shaped frames 22 are evenly ringed in the outer ring sheet gear 21, and the inner edge of the outer ring sheet gear 21 is clamped into the arc groove formed on the outer side wall of the door-shaped frame 22.

[0056] Reference Figure 9 It is understood that the presser group 20 includes an L-shaped foot plate 24 used to push the hard ring barrel 7, a split worm 25 engaged and driven by a row of teeth arranged on the L-shaped foot plate 24, and a foot support 23 fixed on the disc-shaped butterfly plate 5, the foot support 23 supports the L-shaped foot plate 24 and the split worm 25, the end of the split worm 25 is engaged and driven by the fixed gear and the outer ring sheet gear 21, the teeth shape on the L-shaped foot plate 24 can be understood as a part of the inner-facing helical tooth, the L-shaped foot plate 24 slides through the plate hole formed on the foot support 23, and the split worm 25 is movably sleeved in the through hole formed on the foot support 23.

[0057] Reference Figure 10 It is understood that the path component 12 includes a double-sided gear 34 engaged and driven by the fixed arc-shaped rack on the outer ring sheet gear 21, a T-shaped rack body 32 driven on one side of the double-sided gear 34, a last position frame 31 used to limit the moving direction of the T-shaped rack body 32, and a spring 33 interposed between the T-shaped rack body 32 and the last position frame 31, the last position frame 31 is fixed on the disc-shaped butterfly plate 5, one end of the double-sided gear 34 is movably sleeved in the through hole formed on the last position frame 31 through the arranged shaft body, the spring 33 is sleeved on the guide column arranged on the last position frame 31, and the guide column slides through the through hole formed on the T-shaped rack body 32, and one side of the T-shaped rack body 32 is sunk into the groove formed on the last position frame 31.

[0058] The path component 12 further comprises an L-shaped rack body 29 distributed at one end of the T-shaped rack body 32, a tapered plate 30 separated between the L-shaped rack body 29 and the T-shaped rack body 32, a first position frame 28 for limiting the moving direction of the L-shaped rack body 29, a three-control shaft 26 supported on the first position frame 28, and a first position swing column 27 fixed at one end of the three-control shaft 26, wherein an arc-shaped rack is arranged on the first position swing column 27 to engage and drive the L-shaped rack body 29, the first position frame 28 is fixed on the disc butterfly plate 5, the tapered plate 30 is in contact with the end slope of the L-shaped rack body 29 and the end slope of the T-shaped rack body 32 through the arrangement of a sharp end, the other end of the three-control shaft 26 is fixedly connected with the swing driving plate 15, and a square column is arranged on the first position frame 28 to slide through the square hole arranged on the L-shaped rack body 29, and the three-control shaft 26 is movably sleeved in the through hole arranged on the first position frame 28.

[0059] The pipeline component 13 comprises a collection pipe 35 penetrating the disc butterfly plate 5 at one end, an arc-shaped pipe 37 fixedly connected in communication at the other end of the collection pipe 35, a disc column 36 moving in an arc shape in the arc-shaped pipe 37, and a pressure boosting frame 38 fixedly connected with the disc column 36, wherein an arc-shaped column is arranged on the pressure boosting frame 38 to pass through the ring plate arranged at the end of the arc-shaped pipe 37, a gap is left between the disc column 36 and the arc-shaped pipe 37, and a gap is left between the arc-shaped column of the pressure boosting frame 38 and the ring plate of the arc-shaped pipe 37, one end of the pressure boosting frame 38 is fixedly connected with the three-control shaft 26, and the gate disc 8 blocks the water inlet port of the collection pipe 35.

[0060] Referring to the drawings Figure 13 It is understood that the outer sleeve 901 and the compression spring 902 are movably sleeved on the local segment of the valve rod 4, the inner part of the sleeve 901 is provided with a protruding plate to be fixedly connected with the core rod 9, and a notch is arranged on the valve rod 4 for the movement of the protruding plate, one end of the compression spring 902 is in contact with the sleeve 901, and the other end is in contact with the outer ring body fixed on the valve rod 4, the manually operated switch can rotate the sleeve 901, thereby moving the core rod 9 axially in the valve rod 4, the core rod 9 is lowered to drive the gate disc 8, and the gate disc 8 is lowered to block the passage of the collection pipe 35.

[0061] The valve rod 4 is connected to the handle outside the butterfly valve, and the valve rod 4 and the disc butterfly plate 5 can be synchronously rotated by rotating the handle, the disc butterfly plate 5 and the hard ring body 2 are kept in the same plane, and the handle is stopped from rotating, so that the fluid passage in the butterfly valve is preliminarily sealed, that is, the Figure 2 and the Figure 3 The state is shown, and then the hydraulic sealing is automatically enhanced.

[0062] The specific process of the enhanced pressure seal is as follows: the plane of the disc-shaped butterfly plate 5 is perpendicular to the fluid conveying direction, the fluid in the butterfly valve is intercepted by the disc-shaped butterfly plate 5, a small passage is left on the disc-shaped butterfly plate 5, that is, part of the fluid flows into the collecting pipe 35, and then the fluid impacts the disc column 36, the disc column 36 moves to drive the pressure boosting frame 38 to swing, the disc column 36 moves to the head and contacts the ring plate at the port of the arc-shaped pipe 37 to seal, so that the liquid injected into the arc-shaped pipe 37 cannot continue to flow, at this time, the fluid in the butterfly valve is completely intercepted, and the enhanced hydraulic seal is realized between the hard ring body 2 and the butterfly plate device 3.

[0063] As mentioned earlier, the hard ring barrel 7 moves axially to compress the soft ring plate 6, the soft ring plate 6 gradually becomes flat, the outer edge of the soft ring plate 6 deforms and expands, so that the soft ring plate 6 and the hard ring body 2 are in close contact and sealed, and the specific process of the pressure boosting frame 38 swinging to the axial movement of the hard ring barrel 7 is that the pressure boosting frame 38 swings to drive the three-control shaft 26 to rotate, then the first swing column 27 rotates to cause the L-shaped rack body 29 to move, the L-shaped rack body 29 pushes the conical plate 30, thereby causing the T-shaped rack body 32 to move, then the double-sided gear 34 rotates to drive the outer ring piece gear 21, the outer ring piece gear 21 drives all the partial worm gears 25 to rotate, causing the L-shaped foot plate 24 to move, so that all the L-shaped foot plates 24 collectively push the hard ring barrel 7, and the hard ring barrel 7 moves axially.

[0064] The monitoring ring part 14 includes the outer ring plate gear 39 and the inner ring plate gear 42 arranged on one side of the disc-shaped butterfly plate 5, the plurality of ringed control plate units 40 transmitted between the outer ring plate gear 39 and the inner ring plate gear 42, and the lightweight plate 41 connected to one end of the control plate unit 40, a plurality of bosses are arranged on the disc-shaped butterfly plate 5 to limit and support the outer ring plate gear 39, an arc-shaped rack is arranged on the outer ring plate gear 39 to engage and transmit the arc-shaped rack arranged on the swing drive plate 15, and the L-shaped reverse adjusting frame 18 and the inner ring plate gear 42 are fixedly connected;

[0065] The lightweight plate 41 moves to block one side of the abutting ring gap between the soft ring plate 6 and the hard ring body 2, and the fluid leaked through the ring gap impacts to cause the lightweight plate 41 to swing.

[0066] The control plate unit 40 comprises a stake 47 fixed on the disc-shaped butterfly plate 5, a rack push column 43 sliding through the square hole of the stake 47, a branch gear 45 in transmission between the rack push column 43 and the outer ring plate gear 39, a hinge shaft 49 and a long shaft gear 44 supported at one end of the rack push column 43, a unit shaft 46 in transmission at one side of the long shaft gear 44, and a unit roller 48 in transmission between the unit shaft 46 and the inner ring plate gear 42, the hinge shaft 49 and the long shaft gear 44 are in vertical transmission, the hinge shaft 49 is fixedly connected with the light plate 41, the stake 47 supports the branch gear 45, the unit shaft 46 and the unit roller 48, and the stake 47 also supports the inner ring plate gear 42, one end of the branch gear 45 is movably sleeved in the through hole of the stake 47 through a fixed shaft body, the unit shaft 46 and the unit roller 48 are movably sleeved in two through holes of the stake 47 respectively, one end of the unit roller 48 is fixedly sleeved with a gear to mesh with the inner ring plate gear 42, the other end of the unit roller 48 is fixedly sleeved with a bevel gear to mesh with the bevel gear fixed at the end of the unit roller 48, the unit shaft 46 is externally sleeved with a fixed gear to mesh with the long shaft gear 44, the long shaft gear 44 can still stably rotate with the unit shaft 46 in axial movement, the hinge shaft 49 and the long shaft gear 44 are movably sleeved in two through holes at the end of the rack push column 43 respectively, so that the rack push column 43 can drive the hinge shaft 49 and the long shaft gear 44 to move synchronously, and the inner ring plate gear 42 is clamped in the groove of the stake 47 at the local outer edge.

[0067] The partition assembly 19 comprises a double-control stake frame 51 fixed on the disc-shaped butterfly plate 5, an anchor-shaped plate 50 sliding on the double-control stake frame 51, an axle 53 supported on the double-control stake frame 51, and a cam disc 52 fixed on the axle 53, one end of the double-control stake frame 51 is slidably sleeved through the prismatic hole of the conical plate 30 through a fixed U-shaped frame, the cam disc 52 is composed of two half disc bodies with different sizes in abutment, and the edge of the cam disc 52 is in contact with the arc surface arranged at one end of the anchor-shaped plate 50, the axle 53 is movably sleeved in the through hole of the double-control stake frame 51, and two slide columns are arranged on the anchor-shaped plate 50 to pass through the slide grooves arranged at two sides of the double-control stake frame 51.

[0068] The energy storage device 16 releases power to drive the rotation of the axle 53, the interception assembly 17 releases the interception of the energy storage device 16 to make the energy storage device 16 release power, and the interception assembly 17 comprises a switch frame 56 fixed on the disc-shaped butterfly plate 5, a blocking plate 54 hingedly connected at one end of the switch frame 56, and a back-pulling spring piece 55 for driving the blocking plate 54 to reset and swing, the back-pulling spring piece 55 is fixed on the switch frame 56, one end of the L-shaped reverse adjusting frame 18 pushes the inclined plate arranged on the blocking plate 54 to cause the blocking plate 54 to swing, thereby releasing the interception of the energy storage device 16, the shaft body arranged on the blocking plate 54 is movably sleeved in the through hole of the switch frame 56, and one end of the back-pulling spring piece 55 is inserted into the plate hole of the shaft body of the blocking plate 54.

[0069] Energy storage device 16 includes a pile shaft 165 with one end fixed to a disc-shaped plate 5, a spring 167 fixedly sleeved at the other end of the pile shaft 165, a cylindrical cover 164 fixedly sleeved on the outside of the spring 167, a ring-shaped column 166 fixed on the outside of the cylindrical cover 164, a side shaft 162 that drives the outside of the cylindrical cover 164, an output worm gear 161 that drives the side shaft 162 perpendicularly, and a split plate 163 fixed to the pile shaft 165. The output worm gear 161 and the side shaft 162 are respectively movably sleeved on the split plate. In the two through holes on 163, one end of the side shaft 162 meshes with the external gear ring on the barrel cover 164 via a fixed gear, and the other end of the side shaft 162 meshes with the bevel gear fixed at the end of the output worm 161 via a fixed bevel gear. The output worm 161 meshes with the worm wheel fixed at the end of the wheel axle 53. The pile shaft 165 is movably sleeved in the through hole in the middle of the barrel cover 164. The baffle plate 54 intercepts the ring-moving column 166, thereby restricting the rotation of the barrel cover 164. (See attached diagram) Figure 17 Understandably, the pile shaft 165 is divided into a base section and an end section that is fixedly connected to the spring 167. The end section and the base section of the pile shaft 165 are fixedly connected by multiple bolts. In other words, the end section of the pile shaft 165, the spring 167, and the barrel cover 164 can be removed as a whole. After the spring 167 is re-wound, the whole assembly can be reinstalled on the base section of the pile shaft 165.

[0070] After a leak occurs at the contact seam between the hard ring body 2 and the soft ring plate 6, the leaking fluid impacts the lightweight plate 41, thus detecting the leak. Subsequently, the hard ring cylinder 7 loosens the soft ring plate 6, and the soft ring plate 6 gradually recovers. The hard ring cylinder 7 then presses the soft ring plate 6 again, and the soft ring plate 6 re-contacts and seals with the hard ring body 2. In this way, the soft ring plate 6 avoids leakage caused by uneven local deformation through self-adjustment.

[0071] After the soft ring plate 6 and the hard ring body 2 come into contact and seal, the multiple lightweight plates 41 arranged around it gradually extend outwards. Then, the lightweight plates 41 block the joint between the hard ring body 2 and the soft ring plate 6 to detect leakage. As mentioned before, after the soft ring plate 6 and the hard ring body 2 initially seal, the pressure booster 38 swings. The pressure booster 38 drives the three-control shaft 26, which in turn drives the swing drive plate 15 to rotate. Next, all the rack pushers 43 are driven through the outer ring plate gear 39, which in turn drives the lightweight plates 41 through the hinge shaft 49. After the lightweight plates 41 move, they block the joint.

[0072] Before opening the butterfly valve internal passage, the lightweight plate 41 needs to be reset, and the lightweight plate 41 no longer blocks the ring gap, so that the disc butterfly plate 5 can rotate smoothly. Specifically, manual control is used to cause the door disc 8 to move, and the door disc 8 covers the water inlet port of the collection pipe 35, so that the water pressure in the collection pipe 35 no longer presses the disc column 36, the fluid pressure disappears, and the disc column 36 automatically swings back to the reset position. The subsequent transmission causes the lightweight plate 41 to move back to the reset position, that is, the lightweight plate 41 moves away from the ring gap between the soft ring plate 6 and the hard ring body 2; the pressure source for the disc column 36 to swing back to the reset position is the spring 33, which pushes the T-shaped rack body 32 back to the reset position, and then the conical plate 30 reversely pushes the L-shaped rack body 29, and then the first swing column 27 is reset to swing to drive the three-control shaft 26 to reverse, causing the disc column 36 to swing back to the reset position.

[0073] The specific control process of the lightweight plate 41 swinging to the axial movement of the hard ring cylinder 7: the swinging of the lightweight plate 41 drives the hinged shaft 49 to rotate, and then the long shaft gear 44 drives the unit shaft 46, and then the unit roller 48 rotates to drive the inner ring plate gear 42 to rotate. Any swinging of the lightweight plate 41 will trigger the rotation of the inner ring plate gear 42, which drives the L-shaped reverse adjusting frame 18 to move, which pushes the blocking plate 54, and the blocking plate 54 swings to release the ring moving column 166, and then the spring 167 releases power to drive the barrel cover 164 to rotate. During one revolution of the barrel cover 164, the side shaft 162 rotates multiple times, and then the output worm 161 rotates multiple times, and then the wheel shaft 53 rotates one revolution, so that the cam disc 52 completes one revolution of rotation. Referring to the cam disc 52 in the attached Figure 16 , the cam disc 52 rotates counterclockwise initially, the anchor-shaped plate 50 slides to the right, and the conical plate 30 gradually moves away from between the L-shaped rack body 29 and the T-shaped rack body 32. The driving force for moving away is also the rebound of the spring 33, and the L-shaped rack body 29 remains stationary. The spring 33 moves upward, as mentioned earlier, the downward movement of the spring 33 will eventually cause the axial movement of the hard ring cylinder 7, so the upward movement of the spring 33 will cause the reverse movement of the hard ring cylinder 7, that is, the hard ring cylinder 7 releases the pressure on the soft ring plate 6, so that the shape of the soft ring plate 6 gradually recovers. At the end of the rotation of the cam disc 52, the cam disc 52 pushes the anchor-shaped plate 50 again, and the anchor-shaped plate 50 in the attached Figure 16 slides to the left, and then the conical plate 30 is pushed back into the L-shaped rack body 29 and the spring 33, and the spring 33 again descends, which eventually causes the hard ring cylinder 7 to press the soft ring plate 6 again. The soft ring plate 6 adjusts its shape in the intermittent compression to eliminate the contact leakage problem that occurred before.

[0074] If the leakage continues, the light plate 41 will tilt at the leakage point, the subsequent L-shaped counter-adjusting frame 18 will not reset, the blocking plate 54 will not intercept the ring-moving column 166, the barrel cover 164 will continue to rotate, and a new round of driving will be automatically formed, that is, the cam disc 52 rotates again, the soft ring plate 6 deforms again, and the cycle continues, so that the leakage problem is solved. Usually, when the leakage occurs, the soft ring plate 6 is released, and then the soft ring plate 6 is compressed again, so that the soft ring plate 6 and the hard ring body 2 can be firmly in contact and sealed. If the problem is not solved, the soft ring plate 6 will automatically continue to switch between being released and being compressed.

[0075] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A manual butterfly valve with a hydraulic sealing structure, comprising a butterfly valve body (1), characterized in that: The butterfly valve body (1) uses a hard ring (2) and a butterfly plate (3) rotating within the hard ring (2) to block the fluid passage. The hard ring (2) is fixed to the inner wall of the fluid passage of the butterfly valve body (1). The butterfly valve body (1) also uses a valve stem (4) to drive the butterfly plate (3) to rotate. The butterfly plate (3) includes: A disc-shaped butterfly plate (5) is eccentrically fixed on one side of the valve stem (4), and a soft ring plate (6) and a hard ring cylinder (7) are movably sleeved on the outside of the disc-shaped butterfly plate (5). The disc-shaped butterfly plate (5) drives the soft ring plate (6) to contact and seal with the hard ring body (2). The hard ring cylinder (7) and the disc-shaped butterfly plate (5) clamp and compress the soft ring plate (6) to cause the soft ring plate (6) to expand and deform, thereby increasing the seal between the hard ring body (2) and the soft ring plate (6). The disc-shaped butterfly plate (5) has a gate plate (8) facing the fluid side, and a core rod (9) that moves axially at the axial position inside the valve stem (4). The butterfly valve body (1) is equipped with a manual switch to control the movement of the core rod (9), and the core rod (9) and the gate plate (8) move synchronously through a fixed bracket. A pressure-changing ring (10) is provided on the side of the disc-shaped butterfly plate (5) facing away from the fluid. When the hard ring body (2) and the soft ring plate (6) are sealed together, the pressure-changing ring (10) applies a thrust to the hard ring cylinder (7). When the hard ring body (2) and the soft ring plate (6) leak, the pressure-changing ring (10) releases the hard ring cylinder (7) and reapplies the thrust. The soft ring plate (6) eliminates the leakage by re-expanding to contact the hard ring body (2). The transformer ring (10) includes: The output ring (11) that applies axial thrust to the hard ring cylinder (7), and the path component (12) that drives the output ring (11). A pipe component (13) that passes through a disc-shaped butterfly plate (5) at one end, the pipe component (13) pressurizes the transmission path component (12) by collecting fluid pressure; The transformer ring (10) also includes: The monitoring ring (14) is used to detect leakage in the circumferential seam between the hard ring body (2) and the soft ring plate (6), and the swing drive plate (15) establishes linkage between the monitoring ring (14) and the path component (12). The path component (12) is connected to a partition assembly (19), an energy storage device (16) for driving the partition assembly (19), a trapping assembly (17) for releasing the kinetic energy in the energy storage device (16), and an L-shaped counter-adjustment frame (18) for establishing linkage between the trapping assembly (17) and the monitoring ring (14). The monitoring ring (14) includes an outer ring plate gear (39) and an inner ring plate gear (42) arranged around one side of the disc-shaped butterfly plate (5), multiple ring-shaped control plate units (40) that drive between the outer ring plate gear (39) and the inner ring plate gear (42), and a lightweight plate (41) connected to one end of the control plate unit (40). The outer ring plate gear (39) is limited and supported by multiple protrusions on the disc-shaped butterfly plate (5). The outer ring plate gear (39) is meshed with the arc-shaped rack on the swing drive plate (15) by an arc-shaped rack. The L-shaped reverse adjustment frame (18) and the inner ring plate gear (42) are fixedly connected. After the lightweight plate (41) moves, it stops on one side of the joint between the soft ring plate (6) and the hard ring body (2), and the fluid leakage through the joint causes the lightweight plate (41) to swing.

2. A manual butterfly valve with a hydraulic sealing structure according to claim 1, characterized in that: The output ring (11) includes a plurality of uniformly arranged presser foot groups (20) that are in contact with one side of the hard ring cylinder (7), an outer ring gear (21) that drives all the presser foot groups (20), and a gantry frame (22) for limiting and supporting the outer ring gear (21), and the gantry frame (22) is fixed on the disc-shaped butterfly plate (5).

3. A manual butterfly valve with a hydraulic sealing structure according to claim 2, characterized in that: The presser foot assembly (20) includes an L-shaped foot plate (24) for pushing the hard ring cylinder (7), a split worm gear (25) with a row of teeth on the L-shaped foot plate (24) for transmission, and a bracket (23) fixed on the disc-shaped butterfly plate (5). The bracket (23) supports the L-shaped foot plate (24) and the split worm gear (25). The end of the split worm gear (25) is connected to the outer ring gear (21) for transmission through a fixed gear.

4. A manual butterfly valve with a hydraulic sealing structure according to claim 2, characterized in that: The path component (12) includes a double-sided gear (34) that meshes with a fixed arc-shaped rack on the outer ring gear (21), a T-shaped rack body (32) that also drives on one side of the double-sided gear (34), a last position frame (31) for limiting the movement direction of the T-shaped rack body (32), and a spring (33) placed between the T-shaped rack body (32) and the last position frame (31). The last position frame (31) is fixed on the disc-shaped butterfly plate (5), and one end of the double-sided gear (34) is movably sleeved in the through hole opened on the last position frame (31) by setting a shaft.

5. A manual butterfly valve with a hydraulic sealing structure according to claim 4, characterized in that: The path component (12) also includes an L-shaped rack (29) distributed at one end of the T-shaped rack (32), a tapered plate (30) between the L-shaped rack (29) and the T-shaped rack (32), a first-head frame (28) for limiting the movement direction of the L-shaped rack (29), a three-control shaft (26) supported on the first-head frame (28), and a first-head swing column (27) fixed at one end of the three-control shaft (26). The first-head swing column (27) is provided with an arc-shaped rack to mesh with the L-shaped rack (29) for transmission. The first-head frame (28) is fixed on the disc-shaped butterfly plate (5). The tapered plate (30) is provided with a tip to contact the inclined surface at the end of the L-shaped rack (29) and the inclined surface at the end of the T-shaped rack (32) respectively. The other end of the three-control shaft (26) is fixedly connected to the swing drive plate (15).

6. A manual butterfly valve with a hydraulic sealing structure according to claim 5, characterized in that: The pipeline component (13) includes a collection pipe (35) with one end penetrating a disc-shaped butterfly plate (5), an arc-shaped pipe (37) with the other end of the collection pipe (35) fixedly connected, a disc column (36) that moves in an arc shape in the arc-shaped pipe (37), and a booster frame (38) fixedly connected to the disc column (36). The booster frame (38) is provided with an arc-shaped column that passes through the ring plate at the end of the arc-shaped pipe (37). A gap is left between the disc column (36) and the arc-shaped pipe (37), and a gap is left between the arc-shaped column of the booster frame (38) and the ring plate of the arc-shaped pipe (37). One end of the booster frame (38) is fixedly connected to the three-control shaft (26), and the gate plate (8) blocks the water inlet port of the collection pipe (35).

7. A manual butterfly valve with a hydraulic sealing structure according to claim 1, characterized in that: The control unit (40) includes a pile seat (47) fixed on a disc-shaped butterfly plate (5), a rack pusher (43) that slides through a square hole in the pile seat (47), a split gear (45) that drives between the rack pusher (43) and the outer ring plate gear (39), a hinge shaft (49) and a long shaft gear (44) supported at one end of the rack pusher (43), a unit shaft (46) that drives on one side of the long shaft gear (44), and a unit roller (48) that drives between the unit shaft (46) and the inner ring plate gear (42). The hinge shaft (49) and the long shaft gear (44) drive vertically. The hinge shaft (49) and the lightweight plate (41) are fixedly connected. The pile seat (47) supports the split gear (45), the unit shaft (46) and the unit roller (48). The pile seat (47) also supports the inner ring plate gear (42).

8. A manual butterfly valve with a hydraulic sealing structure according to claim 5, characterized in that: The partition assembly (19) includes a double-control pile frame (51) fixed on a disc-shaped butterfly plate (5), an anchor plate (50) sliding on the double-control pile frame (51), a wheel axle (53) supported on the double-control pile frame (51), and a cam disk (52) fixed on the wheel axle (53). One end of the double-control pile frame (51) slides through a prism hole opened on the conical plate (30) through a fixed U-shaped frame. The cam disk (52) is composed of two half-discs of different sizes joined together, and the edge of the cam disk (52) contacts the arc surface set at one end of the anchor plate (50).

9. A manual butterfly valve with a hydraulic sealing structure according to claim 8, characterized in that: The energy storage device (16) releases power to drive the axle (53) to rotate. The interception component (17) releases the interception of the energy storage device (16) to allow the energy storage device (16) to release power. The interception component (17) includes a switch frame (56) fixed on the disc-shaped butterfly plate (5), a baffle plate (54) hinged at one end of the switch frame (56), and a pull-back spring (55) for driving the baffle plate (54) to swing back. The pull-back spring (55) is fixed on the switch frame (56). One end of the L-shaped counter-adjustment frame (18) pushes the inclined plate set on the baffle plate (54) to cause the baffle plate (54) to swing, thereby releasing the interception of the energy storage device (16).

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