CN115013545A

CN115013545A - Industrial butterfly valve

Info

Publication number: CN115013545A
Application number: CN202210661396.9A
Authority: CN
Inventors: 王青青
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-06-13
Filing date: 2022-06-13
Publication date: 2022-09-06

Abstract

The application provides an industry butterfly valve relates to butterfly valve technical field, including the valve body pipeline, still includes: the butterfly valve switch component comprises a flashboard, a frustum bulge, a switch shaft, a third sealing ring and a mounting seat, wherein the mounting seat is integrally formed in the middle of the upper side of the valve body pipeline, the switch shaft is rotatably connected in a vertical mounting hole in the middle of the mounting seat, the bottom end of the switch shaft extends to the middle in the valve body pipeline and is connected with the top of the flashboard, and the frustum bulge is respectively integrally formed at the upper end and the lower end of the flashboard; can control stable gradual opening or closing of flashboard, avoid because pressure medium strikes and opens suddenly when opening fast, keep the stability of butterfly valve to open, avoid industry butterfly valve rear end pipeline pressure to increase suddenly and burst, industry butterfly valve can carry out twice sealing with the gap between flashboard and the pipeline inner wall after closing, can avoid the medium seepage to appear under the high pressure state.

Description

Industrial butterfly valve

Technical Field

The application relates to the technical field of butterfly valves, in particular to an industrial butterfly valve.

Background

At present, an industrial valve is an important accessory for controlling medium flow on an industrial pipeline, and can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The valve consists of three parts, including valve body, opening and closing mechanism and valve cover. The butterfly valve controls the opening and closing of the pipeline by utilizing a disc capable of rotating around a shaft, and the size of a rotating angle reflects the opening degree of the valve;

the industrial valve among the prior art is weak to the control dynamics of flashboard, is strikeed fast opening by inside medium when the flashboard rotates to open, appears the condition that the butterfly valve opened suddenly easily, causes the condition of industry butterfly valve rear end pipeline internal pressure increase suddenly, and the butterfly valve is applied to industry and is closing the back, and the seepage appears easily in the gap between flashboard and the pipeline inner wall under the state of medium high pressure.

Disclosure of Invention

The application provides an industry butterfly valve can control stable gradual opening or closing of flashboard, avoid because pressure medium strikes and opens suddenly when opening fast, keep the stability of butterfly valve to open, avoid industry butterfly valve rear end pipeline pressure to increase suddenly and burst, industry butterfly valve can carry out twice sealing with the gap between flashboard and the pipeline inner wall after closing, the seepage appears in the medium under can avoiding high-pressure state to improve above-mentioned problem.

The invention is particularly such that: an industrial butterfly valve, includes the valve body pipeline, still includes:

the butterfly valve switch assembly comprises a gate plate, a frustum protrusion, a switch shaft, a third sealing ring and a mounting seat, wherein the mounting seat is integrally formed in the middle of the upper side of a valve body pipeline, the switch shaft is rotatably connected in a vertical mounting hole in the middle of the mounting seat, the bottom end of the switch shaft extends to the middle in the valve body pipeline and is connected with the top of the gate plate, the frustum protrusion is respectively integrally formed at the upper end and the lower end of the gate plate, frustum-shaped grooves matched with the frustum protrusion are respectively formed at the upper side and the lower side of the middle in the valve body pipeline, at least two annular grooves are formed in a shaft section of the switch shaft, which is located in the vertical mounting hole in the middle of the mounting seat, and the third sealing ring is sleeved in the annular grooves;

the protective mounting assembly is mounted at the top of the mounting seat;

the primary sealing assemblies are arranged on the left side and the right side of the middle part in the valve body pipeline;

the secondary sealing execution assembly is arranged on the left side and the right side of the flashboard;

the secondary sealing control assemblies are arranged inside the left side and the right side of the flashboard, and the secondary sealing execution assembly is connected with the secondary sealing control assemblies;

the butterfly valve stable control unit is installed inside the protection installation component and connected with the top end of the switch shaft.

The protection installation component is used for installing a protection butterfly valve stability control unit which can stably drive the switch shaft to rotate, the switch shaft can realize self-locking through the butterfly valve stability control unit when rotating to any angle, a special limiting mechanism is not needed to limit the rotation of the switch shaft, the condition that the flashboard is suddenly opened due to the impact of pressure media is avoided, the flow of media in a valve body pipeline can be stably controlled, the sealing ring III can prevent the media from seeping out from a gap between the switch shaft and a middle vertical installation hole of the installation seat, when the switch shaft drives the flashboard to rotate to a state parallel to the cross section of the valve body pipeline, the butterfly valve is closed, the contact area between the upper end and the lower end in the valve body pipeline and the contact area between the upper end and the lower end of the flashboard can be increased due to the matching of the frustum protrusion and the frustum-shaped groove, the sealing effect at the position is improved, and the gaps between the left side edge and the right side edge of the valve board and the valve body pipeline can be sealed by the one-level sealing component, the second-stage sealing control assembly can drive the second-stage sealing execution assembly to seal a gap between the outer arc surface of the flashboard and the inner wall of the valve body pipeline when the flashboard is closed, so that the industrial butterfly valve can be tightly closed, and high-pressure medium leakage is avoided.

Further, protection installation component includes protection mounting box, sealed bearing, bolt, lid and side bearing, the top of mount pad is fixed with horizontal protection mounting box, and bolt fixed connection lid is passed through in the top side opening four corners of protection mounting box, the switch shaft passes through sealed bearing and is connected with the bottom center rotation of protection mounting box, and the left and right sides inlays respectively in the protection mounting box and has the side bearing.

The protection mounting box is used for installing the butterfly valve stability control unit, can open the lid through the bolt, conveniently overhauls the butterfly valve stability control unit in the protection mounting box, and sealed bearing can make the junction of protection mounting box bottom and switch axle keep the closure state, can further avoid leaking the medium between the vertical mounting hole in switch axle and mount pad middle part.

Further, one-level seal assembly includes arc blend stop, flexible end, arc sealing strip and arc seal groove, the position that valve body pipeline inner wall is located flashboard left end front side and right-hand member rear side is fixed with the arc blend stop respectively, the arc blend stop is provided with the arc sealing strip near one side arc wall of flashboard, the arc seal groove has been seted up respectively to the left end front side and the right-hand member rear side of flashboard, the upper and lower both ends of arc blend stop are provided with flexible end respectively.

When the flashboard is closed, the left end front side of flashboard is close to left arc blend stop, and the right-hand member rear side of flashboard is close to with the arc blend stop on right side, can block flashboard arc side edge and valve body pipeline between the gap, can improve sealed degree with the help of the cooperation of arc sealing strip and arc seal groove, can plug up the clearance between arc blend stop and the frustum arch through flexible end, and flexible end adopts the silica gel material, avoids flexible end to interfere the bellied operation of frustum.

Further, the sealed executive component of second grade includes sector groove, arc sealing rod, the sealed pad of arc, spliced pole and installation piece, sector groove has been seted up respectively to the both sides of flashboard, the horizontal sliding connection has the arc sealing rod in the sector groove, the outside of arc sealing rod is connected with the sealed pad of arc through the spliced pole, the inboard middle part of arc sealing rod is provided with the installation piece.

The second grade seal control subassembly can push away the center that two installation pieces kept away from the flashboard to make two arc sealing rod think the direction activity of keeping away from the flashboard center, the spliced pole is used for fixing the arc sealed pad on arc sealing rod outside cambered surface, makes the arc sealed pad stretch out the scallop groove, and the arc sealed pad supports the inner wall of valve body pipeline, keeps the gap between outside cambered surface and the valve body pipeline inner wall, keeps the degree of sealing after the flashboard is closed.

Further, the secondary sealing control component comprises an arc-shaped block, a sliding groove, a sliding block, a limiting ring, an inclined plane, a control block, a wedge-shaped groove, a telescopic rod and an extension spring, the side surfaces of the two mounting blocks are respectively connected with the control block, the side surface of the control block is connected with the middle part of the inner side of the fan-shaped groove through a transverse telescopic rod, the telescopic rod is sleeved with an extension spring, one end of the extension spring is connected with the control block, the other end of the extension spring is connected with the middle part of the inner side of the fan-shaped groove, the side surface of the control block is provided with a wedge-shaped groove, the front side of the left end and the rear side of the right end of the flashboard are respectively provided with a sliding chute, a sliding block is connected in the sliding chute in a sliding way, the side surface of one end of the sliding block, which is positioned in the fan-shaped groove, is fixedly sleeved with a limiting ring, and the end part of one end of the sliding block, which is positioned in the fan-shaped groove, is provided with an inclined plane, the inclined plane is in friction contact with the wedge-shaped surface of the wedge-shaped groove, and the middle part of the inner side of the arc-shaped barrier strip is fixed with an arc-shaped block corresponding to the sliding block.

After the flashboard is closed, the flashboard is close to the arc piece, the arc piece can be impressed the sliding block in the spout, the inclined plane of sliding block is through the friction slip with the wedge groove, the extrusion is moving towards the direction of keeping away from the flashboard center the control block, the telescopic link extension this moment, extension spring is stretched, when the flashboard is opened, the arc piece is kept away from to the flashboard, extension spring resilience shortens, it shortens to pull the telescopic link, the control block is moving towards the direction at flashboard center, the sliding block stretches out from the spout again, stop until the spacing ring restriction makes the sliding block, the arc sealed pad retraces to the sector groove in this moment, the arc sealed pad does not rub with the valve body pipeline, the continuation of not interfering the flashboard is opened.

Further, butterfly valve stability control unit includes pivot, key piece, rolling disc, loose axle one, movable rod, loose axle two, movable block, threaded rod, axis and rotating subassembly, the pivot is connected to the switch shaft top, and the rolling disc is connected through the key piece in the pivot, centraxonial both ends are connected with the one end of threaded rod respectively, and the screw thread opposite direction of two threaded rods, and the other end of two threaded rods is connected with the side bearing middle part that corresponds respectively, and threaded connection has the movable block on two threaded rods respectively, the rolling disc upside is provided with two loose axles one about rolling disc centrosymmetric, the one end of two movable rods of two loose axle one swing joint, and the other end of two movable rods passes through the bottom swing joint of loose axle two and two movable blocks, the end connection rotating subassembly of one of them threaded rod.

The rotating assembly is rotated by rotating the middle shaft and the threaded rod, because the thread directions of the two threaded rods are opposite, and the movable blocks are limited by the movable rods and the movable shafts and cannot rotate relative to the threaded rods, the two movable blocks move in opposite directions or away from each other, when the movable blocks are close to each other, the two movable rods push the rotating disc to rotate anticlockwise, the flashboard is closed by rotating the rotating shaft, the key block and the switch shaft to rotate anticlockwise until the front side of the left end of the flashboard is close to the arc barrier strip on the left side, the rear side of the right end of the flashboard is close to the arc barrier strip on the right side, the movable block is positioned at one end of the threaded rod close to the middle shaft at the moment, when the flashboard is opened, the movable block is positioned at one end of the threaded rod away from the middle shaft, the movable range of the flashboard is ninety degrees, and because of the threaded connection between the threaded rod and the movable blocks, the rotating assembly is not controlled any angle when the flashboard rotates, the flashboards can be in a stable state, cannot rotate due to the impact of media, and do not need special mechanisms to limit the rotation of the rotating assemblies.

Further, still include valve control insurance unit, the side-mounting has valve control insurance unit on the rolling disc, although the flashboard receives the butterfly valve stable control unit control can stop at arbitrary angle, but adopts valve control insurance unit can improve the degree of insurance of valve, avoids the maloperation to rotate the rotating subassembly.

Further, valve control insurance unit includes terminal surface ring one, terminal surface ring two, breach, prism and lift control subassembly, the rolling disc upside is fixed with terminal surface ring one, the middle part of lid is connected with the prism through the lift control subassembly, prismatic bottom is connected with the connection pad, the bottom of connection pad is provided with the terminal surface ring two that corresponds terminal surface ring one, the bottom of terminal surface ring two is provided with the breach that corresponds the centraxonial. The lifting control assembly controls the prism to slide downwards, so that a second end face toothed ring at the bottom of the connecting disc can be clamped with the first end face toothed ring to limit the rotation of the rotating disc, the rotating disc cannot be twisted when the rotating assembly is rotated by mistake, a safety effect can be achieved, and the notch prevents the second end face toothed ring from interfering with the middle shaft when moving downwards.

Furthermore, the valve further comprises external components, wherein the external components are arranged at two ends of the valve body pipeline respectively and are used for connecting a medium pipeline to be controlled. And installing the valve body pipeline of the industrial butterfly valve.

Further, an application method of the industrial butterfly valve comprises the following steps:

connecting two ends of a valve body pipeline to an external pipeline through external components, twisting a rotating component along a pointer until two movable rods are parallel to a middle shaft, and at the moment, enabling a flashboard to be vertical to the cross section of the valve body pipeline and enabling the valve body pipeline to be communicated;

step two, when the industrial butterfly valve needs to be closed, the rotating component is twisted anticlockwise to drive the two middle shafts and the threaded rod to rotate, due to the action of the threads and the action of the movable rod for limiting the rotation of the movable block, the movable block moves along the threaded rod to be close to the middle shafts, and the flashboard slowly and stably rotates anticlockwise until the middle part of the inner side of the valve body pipeline is completely blocked;

when the industrial butterfly valve is closed, the arc-shaped sealing groove on the flashboard and the arc-shaped sealing strip on the arc-shaped barrier strip are matched to block the gap between the two sides of the flashboard and the valve body pipeline;

step four, the outer end of the sliding block is pressed into the sliding groove by the arc-shaped block, the arc-shaped sealing gasket on the outer side of the arc-shaped sealing rod is pushed to stretch out of the fan-shaped groove by overcoming the pulling force of the extension spring through the friction sliding of the inclined surface and the wedge-shaped surface of the wedge-shaped groove, and the gaps between the two sides of the periphery of the flashboard and the pipeline of the valve body are blocked;

and fifthly, controlling the prism to move downwards by using the lifting control assembly, enabling the teeth on the lower side of the end face gear ring II to be clamped with the teeth on the upper side of the end face gear ring I, limiting the rotation of the rotating disc, and finishing the safety operation after the industrial butterfly valve is closed.

The invention has the beneficial effects that:

the industrial butterfly valve comprises a protection installation component, a butterfly valve stability control unit, a butterfly valve pipe, a valve body pipeline and a sealing ring, wherein the protection installation component is used for installing the protection butterfly valve stability control unit, the butterfly valve stability control unit can stably drive a switch shaft to rotate, the switch shaft can realize self-locking through the butterfly valve stability control unit when rotating to any angle, a special limiting mechanism is not needed for limiting the rotation of the switch shaft, the situation that a flashboard is suddenly opened due to the impact of a pressure medium is avoided, the flow of the medium in the valve body pipeline can be stably controlled, the sealing ring can prevent the medium from seeping out from a gap between the switch shaft and a middle vertical installation hole of an installation seat, and when the switch shaft drives the flashboard to rotate to a state parallel to the cross section of the valve body pipeline, the butterfly valve is closed;

according to the industrial butterfly valve, the contact area between the upper end and the lower end in the valve body pipeline and the contact area between the upper end and the lower end of the flashboard can be increased by matching the frustum protrusion and the frustum-shaped groove, the sealing effect at the position is improved, the first-stage sealing component can seal the gap between the left side edge and the right side edge of the flashboard and the valve body pipeline, and the second-stage sealing control component can drive the second-stage sealing execution component to seal the gap between the outer arc surface of the flashboard and the inner wall of the valve body pipeline when the flashboard is closed, so that the industrial butterfly valve can be tightly closed, and high-pressure medium leakage is avoided;

this industry butterfly valve can control stable gradual opening or closing of flashboard, avoids because pressure medium strikes and opens suddenly when opening fast, keeps the stability of butterfly valve to open, avoids industry butterfly valve rear end pipeline pressure to increase suddenly and burst, and industry butterfly valve can carry out twice sealing with the gap between flashboard and the pipeline inner wall after closing, can avoid the medium seepage to appear under the high pressure state.

Drawings

To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of an industrial butterfly valve provided herein;

FIG. 2 is an enlarged view of a portion of the butterfly valve shown in FIG. 1;

FIG. 3 is a schematic view of a partial cross-sectional structure of an industrial butterfly valve provided herein;

FIG. 4 is an enlarged view of a portion of the butterfly valve shown in FIG. 3B;

FIG. 5 is a front view, partially in section, of the industrial butterfly valve of the present application;

FIG. 6 is a schematic diagram of a second partial structure of an industrial butterfly valve provided in the present application;

FIG. 7 is a schematic view of a partial three-structure of an industrial butterfly valve provided herein;

FIG. 8 is a schematic view of a partial cross-sectional structure of a gate plate of an industrial butterfly valve provided herein;

FIG. 9 is a schematic view of a portion of a secondary seal control assembly of an industrial butterfly valve according to the present disclosure;

icon: 1 valve body pipeline, 2 external components, 21 connecting sleeves, 22 sealing ring I, 23 connecting flanges, 24 sealing ring II, 3 butterfly valve switch components, 31 flashboards, 32 frustum bulges, 33 switch shafts, 34 sealing ring III, 35 mounting seats, 4 protection mounting components, 41 protection mounting boxes, 42 sealing bearings, 43 bolts, 44 box covers, 45 side bearings, 5 primary sealing components, 51 arc-shaped blocking strips, 52 arc-shaped fillets, 53 flexible end heads, 54 arc-shaped sealing strips, 55 arc-shaped sealing grooves, 6 secondary sealing control components, 61 arc-shaped blocks, 62 sliding grooves, 63 sliding blocks, 64 limiting rings, 65 inclined planes, 66 control blocks, 67 wedge-shaped grooves, 68 telescopic rods, 69 tension springs, 7 secondary sealing execution components, 71 sector grooves, 72 arc-shaped sealing rods, 73 arc-shaped sealing strips, 74 connecting columns, 75 mounting blocks, 8 stability control units, 81 rotating shafts, 82 key blocks, 83 rotating discs, 84 movable shaft I, 85 movable rods, 86 movable shaft II, 87 movable blocks, 88 threaded rods, 89 middle shafts, 810 extending shafts, 811 hand wheels, 812 arc-shaped protrusions, 9 valve control safety units, 91 end face toothed ring I, 92 end face toothed ring II, 93 gaps, 94 prisms, 95 compression springs, 96 connecting discs, 97 limiting sleeves, 98 safety control sleeves, 99 arc-shaped grooves, 910 rotating columns, 911 rotating sleeves, 912 bent rods and 913 limiting blocks.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, 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, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present application, it should be noted that the indication of orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of the application is used, or the orientation or positional relationship which is usually understood by those skilled in the art, or the orientation or positional relationship which is usually placed when the product of the application is used, and is only for the convenience of describing the application and simplifying the description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may for example be fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Example (b):

in a first embodiment, please refer to fig. 1-9, an industrial butterfly valve includes a valve body pipe 1, and further includes:

butterfly valve switch module 3, include flashboard 31, frustum arch 32, switch shaft 33, three 34 and mount pad 35 of sealing ring, the upside middle part integrated into one piece of valve body pipeline 1 is provided with mount pad 35, the rotation is connected with switch shaft 33 in the middle part vertical installation hole of mount pad 35, the bottom of switch shaft 33 extends to the top of middle part and connection flashboard 31 in the valve body pipeline 1, the upper and lower end of flashboard 31 is provided with frustum arch 32 respectively integrated into one piece, the middle part upper and lower side is provided with the frustum form recess that cooperates with frustum arch 32 respectively in the valve body pipeline 1, the shaft section that switch shaft 33 is located the vertical installation hole in mount pad 35 middle part has seted up the ring channel no less than two, ring channel cup jointed three 34 of sealing ring, three 34 of sealing ring adopts the rubber seal ring;

the protective mounting component 4 is mounted on the top of the mounting seat 35;

the protection installation component 4 comprises a protection installation box 41, a sealing bearing 42, a bolt 43, a box cover 44 and side bearings 45, the top of the installation seat 35 is fixed with the transverse protection installation box 41, four corners of an opening at the top side of the protection installation box 41 are fixedly connected with the box cover 44 through the bolt 43, the switch shaft 33 is rotatably connected with the center of the bottom of the protection installation box 41 through the sealing bearing 42, and the left side and the right side in the protection installation box 41 are respectively inlaid with the side bearings 45.

The protection mounting box 41 is used for mounting the butterfly valve stability control unit 8, the box cover 44 can be opened through the bolt 43, the butterfly valve stability control unit 8 is convenient to overhaul in the protection mounting box 41, the sealing bearing 42 can enable the connection part of the bottom of the protection mounting box 41 and the switch shaft 33 to be kept in a closed state, and medium leakage between the switch shaft 33 and the vertical mounting hole in the middle of the mounting seat 35 can be further avoided.

The primary sealing assemblies 5 are arranged on the left side and the right side of the inner middle part of the valve body pipeline 1;

one-level seal assembly 5 includes arc blend stop 51, flexible end 53, arc seal strip 54 and arc seal groove 55, the position that 1 inner wall of valve body pipeline is located flashboard 31 left end front side and right-hand member rear side is fixed with arc blend stop 51 respectively, arc blend stop 51 is provided with arc seal strip 54 near one side arc wall of flashboard 31, arc seal groove 55 has been seted up respectively to the left end front side and the right-hand member rear side of flashboard 31, the upper and lower both ends of arc blend stop 51 are provided with flexible end 53 respectively.

An arc fillet 52 is arranged at the connecting edge of one side of the arc barrier strip 51, which is far away from the flashboard 31, and the inner wall of the valve body pipeline 1, the arc fillet 52 can enhance the connecting strength of the arc barrier strip 51 and the valve body pipeline 1, and meanwhile, the connecting part of one side of the arc barrier strip 51, which is far away from the flashboard 31, and the valve body pipeline 1 is smoother, so that the stable flow of water is facilitated;

when the gate plate 31 is closed, the front side of the left end of the gate plate 31 is close to the arc-shaped barrier strip 51 on the left side, the rear side of the right end of the gate plate 31 is close to the arc-shaped barrier strip 51 on the right side, gaps between the arc-shaped side edge of the gate plate 31 and the valve body pipeline 1 can be blocked, the sealing degree can be improved by means of the cooperation of the arc-shaped barrier strip 54 and the arc-shaped sealing groove 55, gaps between the arc-shaped barrier strip 51 and the frustum protrusions 32 can be blocked by the flexible end heads 53, the flexible end heads 53 are made of silica gel, and the flexible end heads 53 are prevented from interfering the operation of the frustum protrusions 32. The arc-shaped sealing strip 54 is made of rubber.

The secondary sealing executing assembly 7 is arranged on the left side and the right side of the flashboard 31;

the secondary sealing control components 6 are arranged inside the left side and the right side of the flashboard 31, and the secondary sealing execution components 7 are connected with the secondary sealing control components 6;

the second-stage sealing executing assembly 7 comprises a fan-shaped groove 71, an arc-shaped sealing rod 72, an arc-shaped sealing gasket 73, a connecting column 74 and a mounting block 75, the fan-shaped groove 71 is formed in each of two sides of the gate plate 31, the arc-shaped sealing rod 72 is connected in the fan-shaped groove 71 in a transverse sliding mode, the outer side of the arc-shaped sealing rod 72 is connected with the arc-shaped sealing gasket 73 through the connecting column 74, the mounting block 75 is arranged in the middle of the inner side of the arc-shaped sealing rod 72, and the arc-shaped sealing gasket 73 is made of rubber pads.

The second-stage sealing control assembly 6 can push the two mounting blocks 75 away from the center of the gate plate 31, so that the two arc-shaped sealing rods 72 move in the direction away from the center of the gate plate 31, the connecting column 74 is used for fixing the arc-shaped sealing gasket 73 on the outer arc surface of the arc-shaped sealing rod 72, the arc-shaped sealing gasket 73 extends out of the fan-shaped groove 71, the arc-shaped sealing gasket 73 supports against the inner wall of the valve body pipeline 1, a gap between the outer arc surface of the gate plate 31 and the inner wall of the valve body pipeline 1 is blocked, and the sealing degree of the gate plate 31 after closing is kept.

The secondary sealing control component 6 comprises an arc-shaped block 61, sliding grooves 62, sliding blocks 63, limiting rings 64, inclined planes 65, a control block 66, wedge-shaped grooves 67, an expansion link 68 and an extension spring 69, wherein the side surfaces of the two mounting blocks 75 are respectively connected with the control block 66, the side surface of the control block 66 is connected with the middle part of the inner side of the fan-shaped groove 71 through the transverse expansion link 68, the extension spring 69 is sleeved on the expansion link 68, one end of the extension spring 69 is connected with the control block 66, the other end of the extension spring is connected with the middle part of the inner side of the fan-shaped groove 71, the side surface of the control block 66 is provided with the wedge-shaped groove 67, the sliding grooves 62 are respectively arranged on the front side of the left end and the rear side of the right end of the flashboard 31, the sliding blocks 63 are connected in the sliding grooves 62 in a sliding manner, the side surface of one end of the sliding block 63, which is positioned in the fan-shaped groove 71, is fixedly sleeved with the limiting rings 64, the inclined planes 65 are arranged on the end part of the sliding blocks 63, and are in friction contact with the wedge-shaped surfaces of the wedge-shaped grooves 67, the middle part of the inner side of the arc-shaped barrier strip 51 is fixed with an arc-shaped block 61 corresponding to the sliding block 63.

When the gate 31 is closed, the gate 31 is close to the arc-shaped block 61, the arc-shaped block 61 presses the sliding block 63 into the sliding groove 62, the inclined surface 65 of the sliding block 63 slides through friction with the wedge-shaped groove 67, the control block 66 is extruded to move in a direction away from the center of the gate 31, the telescopic rod 68 extends at the moment, the stretching spring 69 is stretched, when the gate 31 is opened, the gate 31 is away from the arc-shaped block 61, the stretching spring 69 rebounds and shortens, the telescopic rod 68 is pulled to shorten, the control block 66 moves in a direction towards the center of the gate 31, the sliding block 63 extends out of the sliding groove 62 again until the limiting ring 64 limits to stop the sliding block 63, at the moment, the arc-shaped sealing gasket 73 retracts into the fan-shaped groove 71 again, the arc-shaped sealing gasket 73 does not rub with the valve body pipeline 1, and the continuous opening of the gate 31 is not interfered.

And a butterfly valve stability control unit 8 installed inside the protection installation component 4, wherein the butterfly valve stability control unit 8 is connected with the top end of the switch shaft 33.

The butterfly valve stability control unit 8 comprises a rotating shaft 81, a key block 82, a rotating disc 83, a first movable shaft 84, a movable rod 85, a second movable shaft 86, a movable block 87, a threaded rod 88, a middle shaft 89 and a rotating component, wherein the top of the switch shaft 33 is connected with the rotating shaft 81, the rotating shaft 81 is connected with the rotating disc 83 through the key block 82, two ends of the middle shaft 89 are respectively connected with one end of the threaded rod 88, the thread directions of the two threaded rods 88 are opposite, the other ends of the two threaded rods 88 are respectively connected with the middle parts of the corresponding side bearings 45, the two threaded rods 88 are respectively in threaded connection with movable blocks 87, two movable shafts 84 which are symmetrical about the center of the rotating disc 83 are arranged on the upper side of the rotating disc 83, the two movable shafts 84 are movably connected with one ends of the two movable rods 85, the other ends of the two movable rods 85 are movably connected with the bottoms of the two movable blocks 87 through the two movable shafts 86, and the end part of one of the threaded rods 88 is connected with a rotating assembly.

The middle shaft 89 and the threaded rod 88 are rotated by the rotating assembly, because the thread directions of the two threaded rods 88 are opposite, and the movable block 87 is limited by the movable rod 85 and the movable shaft II 86 and can not rotate relative to the threaded rod 88, the two movable blocks 87 move towards or away from each other, when the movable blocks 87 approach each other, the two movable rods 85 push the rotating disc 83 to rotate anticlockwise, the rotating shaft 81, the key block 82 and the switch shaft 33 rotate anticlockwise, the gate plate 31 is closed until the front side of the left end of the gate plate 31 approaches the arc-shaped barrier strip 51 on the left side, the rear side of the right end of the gate plate 31 approaches the arc-shaped barrier strip 51 on the right side, the movable block 87 is positioned at one end of the threaded rod 88 close to the middle shaft 89, when the gate plate 31 is opened, the movable block 87 is positioned at one end of the threaded rod 88 away from the middle shaft 89, the movable range of the gate plate 31 is ninety degrees, and because of the self-locking capacity of the threaded connection of the threaded rod 88 and the movable blocks 87, when the gate 31 rotates to any angle, the rotating component is not controlled any more, the gate 31 can be in a stable state, the rotation caused by the impact of the medium can not be caused, and a special mechanism is not needed for limiting the rotation of the rotating component.

The rotating component comprises an extension shaft 810, a hand wheel 811 and arc-shaped bulges 812, wherein the end part of one threaded rod 88 extends to the outer side of the protective mounting box 41 and is connected with one end of the extension shaft 810, the other end of the extension shaft 810 is connected with the middle part of the hand wheel 811, the arc-shaped bulges 812 are arranged in an annular array on the outer peripheral side of the hand wheel 811, the friction force is increased through the arc-shaped bulges 812, the hand wheel 811 is convenient to rotate, the threaded rod 88 can be driven to rotate through the transmission of the extension shaft 810, and the manual control of the industrial butterfly valve is realized;

the protection installation component 4 is used for installing a protection butterfly valve stable control unit 8, the butterfly valve stable control unit 8 can stably drive the switch shaft 33 to rotate, the switch shaft 33 can realize self-locking through the butterfly valve stable control unit 8 when rotating to any angle, a special limiting mechanism is not needed to limit the rotation of the switch shaft 33, the condition that the flashboard 31 is suddenly opened due to the impact of pressure media is avoided, the flow of the media in the valve body pipeline 1 can be stably controlled, the sealing ring III 34 can avoid the media from seeping out from a gap between the switch shaft 33 and a middle vertical installation hole of the installation seat 35, when the switch shaft 33 drives the flashboard 31 to rotate to a state parallel to the cross section of the valve body pipeline 1, the butterfly valve is closed, the contact area between the upper end and the lower end in the valve body pipeline 1 and the contact area between the upper end and the lower end of the flashboard 31 can be increased by the matching of the frustum bulge 32 and the frustum-shaped groove, and the sealing effect at the position is improved, the first-stage sealing assembly 5 can seal the gaps between the left side edge and the right side edge of the gate plate 31 and the valve body pipeline 1, the second-stage sealing control assembly 6 can drive the second-stage sealing execution assembly 7 to seal the gap between the outer arc surface of the gate plate 31 and the inner wall of the valve body pipeline 1 when the gate plate 31 is closed, the industrial butterfly valve can be tightly closed, and high-pressure medium leakage is avoided.

In a second embodiment, referring to fig. 4, an industrial butterfly valve is substantially the same as the first embodiment in structure, except that:

the automatic stop valve further comprises a valve control safety unit 9, the valve control safety unit 9 is arranged on the upper side of the rotating disc 83, although the valve plate 31 can be controlled by the butterfly valve stability control unit 8 to stop at any angle, the valve control safety unit 9 can be adopted to improve the safety of the valve, and misoperation of the rotating assembly is avoided.

The valve control safety unit 9 comprises a first end face gear ring 91, a second end face gear ring 92, a notch 93, a prism 94 and a lifting control assembly, the first end face gear ring 91 is fixed on the upper side of the rotating disc 83, the middle part of the box cover 44 is connected with the prism 94 through the lifting control assembly, the bottom end of the prism 94 is connected with a connecting disc 96, the bottom of the connecting disc 96 is provided with the second end face gear ring 92 corresponding to the first end face gear ring 91, and the bottom of the second end face gear ring 92 is provided with the notch 93 corresponding to the middle shaft 89. The lifting control assembly controls the prism 94 to slide downwards, so that the end face gear ring II 92 at the bottom of the connecting disc 96 is clamped with the end face gear ring I91 to limit the rotation of the rotating disc 83, the rotating disc 83 cannot be twisted when the rotating assembly is rotated by mistake, a safety effect can be achieved, and the notch 93 prevents the end face gear ring II 92 from interfering with the middle shaft 89 when moving downwards.

In a third embodiment, please refer to fig. 2-4, an industrial butterfly valve is further described in the second embodiment;

the lifting control component comprises a compression spring 95, a limit sleeve 97, a safety control sleeve 98, an arc-shaped groove 99, a rotating column 910, a rotating sleeve 911, a curved rod 912 and a limit block 913, the limit sleeve 97 is embedded in the middle of the box cover 44, the limit sleeve 97 is vertically connected with the prism 94 in a sliding manner to promote the prism 94 to slide up and down stably, the column section of the prism 94 between the connecting disc 96 and the box cover 44 is sleeved with the compression spring 95, the box cover is used for enabling the prism 94 to move downwards in a natural state, enabling the end face toothed ring II 92 to be clamped with the end face toothed ring I91, fixedly connecting a safety control sleeve 98 to the top of the box cover 44, which is positioned around the prism 94, an arc-shaped groove 99 is formed in the upper side of the safety control sleeve 98, enabling the top of the prism 94 to be rotatably connected with a rotating sleeve 911 through a rotating column 910, enabling one side of the rotating sleeve 911 to be connected with a limiting block 913 through a bent rod 912, and enabling the position, close to the end part of the arc-shaped groove 99, of the upper side of the safety control sleeve 98 to be provided with a limiting groove;

when the insurance is needed to be acted, the bent rod 912 is rotated to enable the limiting block 913 to be in contact with the inner side face of the bottom of the arc-shaped groove 99, the compression spring 95 rebounds and extends to push the end face toothed ring II 92 to be clamped with the end face toothed ring I91, the flashboard cannot move any more to play the insurance role, when the insurance needs to be relieved, the bent rod 912 is rotated to enable the limiting block 913 to slide along the arc-shaped groove 99 until the limiting block 913 is clamped into the limiting groove in the insurance control sleeve 98, the prism 94 moves upwards at the moment, the compression spring 95 is compressed, the end face toothed ring II 92 is separated from the clamping state with the end face toothed ring I91, and the insurance is relieved.

In a fourth embodiment, referring to fig. 1, an industrial butterfly valve is substantially the same as the third embodiment, except that:

still include external subassembly 2, the both ends of valve body pipeline 1 are provided with external subassembly 2 respectively, and external subassembly 2 is used for connecting the medium pipeline of treating control. The valve body pipeline 1 of the industrial butterfly valve is well installed.

External subassembly 2 includes adapter sleeve 21, sealing ring 22, flange 23, sealing ring two 24, valve body pipeline 1's both ends integrated into one piece respectively are connected with adapter sleeve 21, the sealing ring 22 of rubber material has been cup jointed in two annular grooves of adapter sleeve 21's periphery side respectively, can accept through adapter sleeve 21 when being connected with outside pipeline, accept the department through sealing ring 22 is sealed, valve body pipeline 1's both ends periphery side integrated into one piece respectively is provided with flange 23, one side that valve body pipeline 1 was kept away from to flange 23 is provided with sealing ring two 24, flange 23 and outside flange junction can be sealed with flange two 24, can improve the leakproofness with outside pipeline junction.

Referring to fig. 1-9, a method for using an industrial butterfly valve includes the following steps:

step one, two ends of a valve body pipeline 1 are connected to an external pipeline through an external component 2, a rotating component is twisted along a pointer until two movable rods 85 are parallel to a middle shaft 89, at the moment, a flashboard 31 is vertical to the cross section of the valve body pipeline 1, and the valve body pipeline 1 is conducted;

step two, when the industrial butterfly valve needs to be closed, the rotating component is twisted anticlockwise to drive the two middle shafts 89 and the threaded rod 88 to rotate, due to the action of the threads and the action of limiting the movable block 87 to rotate by the movable rod 85, the movable block 87 moves close to the middle shafts 89 along the threaded rod 88, and the flashboard 31 slowly and stably rotates anticlockwise until the middle part of the inner side of the valve body pipeline 1 is completely blocked;

step three, when the industrial butterfly valve is closed, the arc-shaped sealing groove 55 on the flashboard 31 and the arc-shaped sealing strip 54 on the arc-shaped barrier strip 51 are matched to block the gap between the two sides of the flashboard 31 and the valve body pipeline 1;

step four, the outer end of the sliding block 63 is pressed into the sliding groove 62 by the arc-shaped block 61, and the arc-shaped sealing gasket 73 on the outer side of the arc-shaped sealing rod 72 is pushed to extend out of the fan-shaped groove 71 by overcoming the pulling force of the extension spring 69 through the friction sliding of the wedge-shaped surface of the inclined surface 65 and the wedge-shaped groove 67, so that gaps between two sides of the periphery of the flashboard 31 and the valve body pipeline 1 are blocked;

and step five, controlling the prism 94 to move downwards by using the lifting control assembly, so that the teeth on the lower side of the end face gear ring II 92 are clamped with the teeth on the upper side of the end face gear ring I91, limiting the rotation of the rotating disc 83, and finishing the safety operation after the industrial butterfly valve is closed.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An industry butterfly valve, includes valve body pipeline (1), its characterized in that still includes:

butterfly valve switch module (3), include flashboard (31) and switch shaft (33), the upside middle part integrated into one piece of valve body pipeline (1) is provided with mount pad (35), rotate in the middle part vertical installation hole of mount pad (35) and be connected with switch shaft (33), the bottom of switch shaft (33) extends to middle part and the top of connecting flashboard (31) in valve body pipeline (1), the upper and lower end of flashboard (31) is integrated into one piece respectively and is provided with frustum arch (32), the middle part upper and lower side is provided with frustum form recess with frustum arch (32) complex respectively in valve body pipeline (1), the shaft section that switch shaft (33) is located in mount pad (35) middle part vertical installation hole is seted up and is no less than two ring channels, and the ring channel cup joints sealing ring three (34);

the protection mounting assembly (4) is mounted at the top of the mounting seat (35);

the primary sealing assemblies (5) are arranged on the left side and the right side of the inner middle part of the valve body pipeline (1);

the secondary sealing executing assemblies (7) are arranged on the left side and the right side of the flashboard (31);

the secondary sealing control assemblies (6) are arranged inside the left side and the right side of the flashboard (31), and the secondary sealing execution assembly (7) is connected with the secondary sealing control assemblies (6);

the butterfly valve stable control unit (8) is installed inside the protection installation component (4), and the butterfly valve stable control unit (8) is connected with the top end of the switch shaft (33).

2. The industrial butterfly valve according to claim 1, wherein the protection mounting assembly (4) comprises a protection mounting box (41), the top of the mounting seat (35) is fixed with a transverse protection mounting box (41), four corners of an opening at the top side of the protection mounting box (41) are fixedly connected with a box cover (44) through bolts (43), the switch shaft (33) is rotatably connected with the center of the bottom of the protection mounting box (41) through a sealing bearing (42), and side bearings (45) are respectively embedded at the left side and the right side in the protection mounting box (41).

3. The industrial butterfly valve according to claim 1, wherein the primary sealing assembly (5) comprises an arc-shaped barrier strip (51) and an arc-shaped sealing strip (54), the positions of the inner wall of the valve body pipeline (1) on the front side of the left end and the rear side of the right end of the gate plate (31) are respectively fixed with the arc-shaped barrier strip (51), the arc-shaped sealing strip (54) is arranged in an arc-shaped groove on one side of the arc-shaped barrier strip (51) close to the gate plate (31), the front side of the left end and the rear side of the right end of the gate plate (31) are respectively provided with an arc-shaped sealing groove (55), and the upper end and the lower end of the arc-shaped barrier strip (51) are respectively provided with a flexible end (53).

4. The industrial butterfly valve according to claim 3, wherein the secondary seal executing assembly (7) comprises a fan-shaped groove (71) and an arc-shaped sealing rod (72), the fan-shaped groove (71) is formed in each of two sides of the gate plate (31), the arc-shaped sealing rod (72) is connected in the fan-shaped groove (71) in a transverse sliding mode, an arc-shaped sealing gasket (73) is connected to the outer side of the arc-shaped sealing rod (72) through a connecting column (74), and a mounting block (75) is arranged in the middle of the inner side of the arc-shaped sealing rod (72).

5. The industrial butterfly valve according to claim 4, wherein the secondary seal control assembly (6) comprises a telescopic rod (68) and an extension spring (69), the side surfaces of the two mounting blocks (75) are respectively connected with a control block (66), the side surface of the control block (66) is connected with the middle part of the inner side of the fan-shaped groove (71) through the transverse telescopic rod (68), the extension spring (69) is sleeved on the telescopic rod (68), one end of the extension spring (69) is connected with the control block (66) and the other end is connected with the middle part of the inner side of the fan-shaped groove (71), the side surface of the control block (66) is provided with a wedge-shaped groove (67), the front side and the rear side of the left end of the gate plate (31) are respectively provided with a sliding groove (62), the sliding groove (62) is slidably connected with a sliding block (63), and the side surface of one end of the sliding block (63) positioned in the fan-shaped groove (71) is fixedly sleeved with a limit ring (64), and the one end tip that sliding block (63) are located sector groove (71) is provided with inclined plane (65), and inclined plane (65) and the wedge face frictional contact of wedge groove (67), the inboard middle part of arc blend stop (51) is fixed with arc piece (61) that correspond sliding block (63).

6. The industrial butterfly valve according to claim 2, wherein the butterfly valve stability control unit (8) comprises a middle shaft (89) and a rotating component, the top of the switch shaft (33) is connected with a rotating shaft (81), the rotating shaft (81) is connected with a rotating disc (83) through a key block (82), two ends of the middle shaft (89) are respectively connected with one end of a threaded rod (88), the thread directions of the two threaded rods (88) are opposite, the other ends of the two threaded rods (88) are respectively connected with the middle parts of corresponding side bearings (45), the two threaded rods (88) are respectively in threaded connection with a movable block (87), two movable shafts I (84) which are symmetrical about the center of the rotating disc (83) are arranged on the upper side of the rotating disc (83), the two movable shafts I (84) are movably connected with one end of the two movable rods (85), the other ends of the two movable rods (85) are movably connected with the bottoms of the two movable blocks (87) through movable shafts II (86), one of the threaded rods (88) has an end connected to a spinner assembly.

7. An industrial butterfly valve according to claim 6, characterised in that it further comprises a valve control safety unit (9), the valve control safety unit (9) being mounted on the upper side of said rotary disk (83).

8. The industrial butterfly valve according to claim 7, wherein the valve control safety unit (9) comprises a prism (94) and a lifting control assembly, a first end face gear ring (91) is fixed on the upper side of the rotating disc (83), the prism (94) is connected to the middle part of the box cover (44) through the lifting control assembly, a connecting disc (96) is connected to the bottom end of the prism (94), a second end face gear ring (92) corresponding to the first end face gear ring (91) is arranged at the bottom of the connecting disc (96), and a notch (93) corresponding to the middle shaft (89) is arranged at the bottom of the second end face gear ring (92).

9. An industrial butterfly valve according to claim 1, further comprising an external component (2), wherein the external components (2) are respectively arranged at two ends of the valve body pipeline (1).

10. The method of using an industrial butterfly valve according to claims 1 to 9, comprising the steps of:

step one, connecting two ends of a valve body pipeline (1) with an external pipeline through an external component (2), twisting a rotating component along a pointer until two movable rods (85) are parallel to a middle shaft (89), and at the moment, enabling a flashboard (31) to be vertical to the cross section of the valve body pipeline (1) and enabling the valve body pipeline (1) to be conducted;

step two, when the industrial butterfly valve needs to be closed, the rotating component is twisted anticlockwise to drive the two middle shafts (89) and the threaded rod (88) to rotate, due to the action of the threads and the action of limiting the movable block (87) to rotate by the movable rod (85), the movable block (87) moves along the threaded rod (88) to be close to the middle shafts (89), and the flashboard (31) slowly and stably rotates until the middle part of the inner side of the valve body pipeline (1) is completely blocked;

step three, when the industrial butterfly valve is closed, an arc-shaped sealing groove (55) on the gate plate (31) and an arc-shaped sealing strip (54) on the arc-shaped barrier strip (51) are matched to block a gap between two sides of the gate plate (31) and the valve body pipeline (1);

step four, the outer end of the sliding block (63) is pressed into the sliding groove (62) by the arc-shaped block (61), and the arc-shaped sealing gasket (73) on the outer side of the arc-shaped sealing rod (72) is pushed to overcome the pulling force of the extension spring (69) to extend out of the fan-shaped groove (71) through the friction sliding of the inclined surface (65) and the wedge-shaped surface of the wedge-shaped groove (67), so that the gaps between the two sides of the periphery of the flashboard (31) and the valve body pipeline (1) are blocked;

and step five, controlling the prism (94) to move downwards by using the lifting control assembly, clamping the teeth on the lower side of the end face toothed ring II (92) with the teeth on the upper side of the end face toothed ring I (91), limiting the rotation of the rotating disc (83), and finishing the safety operation after the industrial butterfly valve is closed.