CN110388472A - Flexible butterfly valve - Google Patents
Flexible butterfly valve Download PDFInfo
- Publication number
- CN110388472A CN110388472A CN201910609668.9A CN201910609668A CN110388472A CN 110388472 A CN110388472 A CN 110388472A CN 201910609668 A CN201910609668 A CN 201910609668A CN 110388472 A CN110388472 A CN 110388472A
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- Prior art keywords
- valve
- flexible
- screw
- valve body
- plate
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- 238000007789 sealing Methods 0.000 claims abstract description 66
- 210000004907 gland Anatomy 0.000 claims abstract description 47
- 241000826860 Trapezium Species 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 16
- 238000009434 installation Methods 0.000 description 6
- 230000013011 mating Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 241000282693 Cercopithecidae Species 0.000 description 1
- 241000233855 Orchidaceae Species 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 241001415849 Strigiformes Species 0.000 description 1
- 240000001923 Thevetia neriifolia Species 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/226—Shaping or arrangements of the sealing
- F16K1/2261—Shaping or arrangements of the sealing the sealing being arranged on the valve member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of sealing rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/12—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses flexible butterfly valves, it includes valve body, valve shaft, valve plate, valve plate sealing ring, valve body sealing surface and extensible member, valve plate sealing ring is fixed on valve plate by adjusting pressing plate, pressing plate is adjusted to be fixed on butterfly plate by several bridge screws, bridge screw is distributed around valve plate horizontal interval, it adjusts and is equipped with circular cone dual-lug type stop washer between pressing plate and bridge screw, circular cone dual-lug type stop washer includes conic tube compatible with the nut outer diameter of bridge screw, the big face of conic tube has screech owl and cropped ear, screech owl is fitted on the nut of bridge screw, cropped ear is fitted in the outer for adjusting pressing plate.The beneficial effects of the invention are as follows valve plate sealing ring and valve body sealing surface circumferencial direction magnitude of interference is adjusted by adjusting the screw-down torque of bridge screw, valve is made to keep sealing；The way of contact of flexible seal ring and flexible gland makes flexible gland act on the bottom surface of flexible seal ring completely to the pretightning force that flexible seal ring applies, it is ensured that sealing effect.
Description
Technical field
The present invention relates to valve field more particularly to flexible butterfly valves.
Background technique
Butterfly valve stretch as a control element connecting with pipe-line equipment, expansion bend and butterfly valve are combined into one, it is complete
Latus rectum realizes the requirement of pressure pipeline element big flow.Such as Chinese utility model patent publication number CN204985763U is disclosed
A kind of limit telescopic butterfly valve, including butterfly type valve, the telescoping tube being mounted on butterfly type valve and the sealing being set on the outside of telescoping tube
Circle and pressing plate, the pressing plate inside are equipped with seal groove, and sealing ring is located in seal groove, and the pressing plate and butterfly type valve pass through screw and lock
It fastens, is convexly equipped with ring flange on the outside of the telescoping tube, the ring flange and the butterfly type valve both ends that be located at telescoping tube opposite are described
Be additionally provided on the outside of telescoping tube with the integrally formed lug of telescoping tube, the lug is between pressing plate and ring flange.It includes valve
Door section and telescopic section, the cooperation between the butterfly plate (valve plate) and valve body of butterfly valve by sealing ring and valve body sealing surface are realized close
Envelope is secondary, which is fixed on above butterfly plate generally by pressing plate is adjusted, and existing adjusting pressing plate usually directly passes through
Screw is fixed on above butterfly plate, and screw can be easy to happen loosening after adjusting pretightning force repeatedly to adjusting pressing plate, or even occur
It falls off, influences to adjust pressing plate to the preload pressure of sealing ring；Telescopic section includes telescoping tube, flexible gland, expansion screw and valve
Body connecting flange, the sealing performance stretched between gland, telescoping tube and valve body connecting flange is also an important indicator, how to be protected
The flexible sealing between gland, telescoping tube and valve body connecting flange of card such as is also at the problem to be solved.
Summary of the invention
The technical problem to be solved by the present invention is to one of at least the above problems, provide a kind of flexible butterfly valve thus.
The technical scheme is that flexible butterfly valve, it includes valve body, valve shaft, valve plate, valve plate sealing ring, valve seal
Face, valve shaft and extensible member, the valve plate sealing ring is fixed on valve plate by adjusting pressing plate, if the adjusting pressing plate passes through dry-pressing
Plate bolt is fixed on butterfly plate, and the bridge screw is distributed around valve plate horizontal interval, the adjustings pressing plate and bridge screw it
Between be equipped with circular cone dual-lug type stop washer, the circular cone dual-lug type stop washer includes being adapted with the nut outer diameter of bridge screw
Conic tube, the big face of the conic tube has screech owl and cropped ear, and the screech owl is fitted on the nut of bridge screw, institute
It states cropped ear and is fitted in the outer for adjusting pressing plate.
The bridge screw nominal diameter that linear distance in above scheme between two neighboring bridge screw is 6-8 times.
The improvement of above scheme is that internal thread hole is offered on adjusting pressing plate between two neighboring bridge screw, it is described in
Threaded hole screw-internal thread fit has the holding screw contacted with butterfly plate.
Extensible member described in above scheme includes telescoping tube, stretch gland, expansion screw and valve body connecting flange, described to stretch
The tube body that the draw includes standard flange and is fixed on standard flange with one heart is evenly equipped with a circle on the periphery of the standard flange
A circle is distributed with to extension in the periphery outer rim of the valve body connecting flange in the expansion screw through-hole and flange hole being interspersed
The protrusion stretched offers expansion screw through-hole in the protrusion, and the protrusion is between two neighboring flange hole, the valve body
There is valve body connecting flange sealing surface, the periphery middle section of the valve body connecting flange on the periphery inner edge of connecting flange
On be also distributed with a circle stretch gland fastener hole, the expansion screw includes cooperating with the expansion screw through hole whorl of telescoping tube
First threaded portion, cylindrical portion and the second threaded portion with the expansion screw through hole whorl cooperation of valve body connecting flange, it is described flexible
Gland is threadedly coupled by bolt with the flexible gland fastener hole of valve body connecting flange.
The further improvement of above scheme is that the end of two threaded portion is equipped with split pin.
The further improvement of above scheme is close equipped with stretching between the flexible gland, tube body and valve body connecting flange
It is respectively equipped on seal, the flexible seal ring and tube body contact surface and flexible seal ring and valve body connecting flange contact surface grand
The portion of rising, so that being interference fitted between flexible seal ring and tube body and valve body connecting flange.
The section of flexible seal ring described in above scheme is that right-angled trapezium, inclined-plane and upper bottom surface connect with flexible gland
Touching, bottom surface are contacted with tube body, and right-angle surface is contacted with valve body connecting flange, the contact point on the inclined-plane and flexible gland
It is vertex to forming 2 ° -5 ° between the upper bottom surface direction inclined-plane and flexible gland of right-angled trapezium using the contact point in the bottom of the slope
Angle.
Valve shaft described in above scheme includes upper valve shaft and lower valve shaft, and the upper valve shaft is equipped with the upper shaft shoulder, the upper axis
Shoulder is equipped with sealing shroud and sealing gland, and the sealing shroud and the upper shaft shoulder cooperate in vertical gap, set on the lower valve shaft
There is the lower shaft shoulder, the bottom of the lower shaft shoulder is contacted with the end cap for being fixed on body base, and the lower shaft shoulder and valve body are in Vertical Square
To clearance fit.
Upper valve shaft and lower valve shaft described in above scheme pass through valve plate pin shaft respectively and connect with valve plate.
The beneficial effects of the invention are as follows adjust valve plate sealing ring and valve seal by adjusting the screw-down torque of bridge screw
Face circumferencial direction magnitude of interference makes valve keep sealing.Adjust uniformly distributed circle bridge screw, each adjacent two bridge screw on pressing plate
Linear distance be 6~8 times bridge screw nominal diameter, circular cone dual-lug type stop pad is equipped on each bridge screw
Circle falls to prevent bridge screw loosening, and the way of contact of flexible seal ring and flexible gland makes flexible gland to flexible sealing
The pretightning force that circle applies acts on the bottom surface of flexible seal ring completely, it is ensured that sealing effect；Pressing plate and holding screw cooperation are adjusted,
Both the position for adjusting pressing plate is secured, ensure that valve plate sealing ring and valve body sealing surface circumferencial direction magnitude of interference, and produce pre-
Clamp force.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is valve body connecting flange structure schematic diagram of the present invention；
Fig. 3 is flexible pipe structure schematic diagram of the present invention；
Fig. 4 is full-bore structural schematic diagram of the present invention；
Fig. 5 is hanging hang structure schematic diagram on the upper axis valve of the present invention；
Fig. 6 is roof construction schematic diagram under lower axle valve of the present invention；
Fig. 7 is that lower roof construction schematic diagram is hung in the present invention；
Fig. 8 is that the present invention adjusts pressing plate top board screw check structural schematic diagram；
Fig. 9 is circular cone dual-lug type stop washer structural schematic diagram of the present invention；
Figure 10 is that circular cone dual-lug type stop washer of the present invention uses structural schematic diagram；
Figure 11 is that the present invention adjusts pressing plate top board screw check structural schematic diagram；
Figure 12 is expansion screw structural schematic diagram of the present invention；
Figure 13 is flexible seal ring structural schematic diagram of the present invention；
Figure 14 is limit telescopic butterfly valve normal mounting position structural schematic diagram of the present invention；
Figure 15 is limit telescopic butterfly valve L- △ L positional structure schematic diagram of the present invention；
Figure 16 is limit telescopic butterfly valve L+ △ L positional structure schematic diagram of the present invention；
Figure 17 is that flexible seal ring of the present invention and flexible gland cooperate schematic diagram；
In figure, 1 driving device, 2 flat keys, 3 brackets, valve shaft on 4,5 sealing jacket glands, 6 sealing shrouds, 7 valve bodies, 8 adjust pressing plates, and 9
Valve plate sealing ring, 10 pin shafts, 11 valve plates, 12 lower valve shafts, 13 end caps, 14 flexible seal rings, 15 flexible glands, 16 telescoping tubes, 17
Expansion screw, 18 valve body connecting flanges, 19 flange holes, 20 protrusions, 21 expansion screw through-holes, 22 flexible gland fastener holes, 23 valves
Body connecting flange sealing surface, 24 raised outer circles, 25 raised inner circles, 26 flange hole center circles, 27 raised sides, 28 valve shaft centers
Line, 29 convex planes, 30 standard flanges, 31 tube bodies, 32 limit telescopic screw flight through-holes, 33 suction flange end internal channels are straight
Diameter, 34 outlet(discharge) flange end internal channel diameters, 35 shaft shoulders, 36 shaft shoulders and valve body contact face, 37 valve body sealing surfaces, 38 circular cone dual-lug types
Stop washer, 39 bridge screws；40 taper cone barrels；41 screech owls；42 cropped ears；43 holding screws；44 adjust pressing plate Contact Seal ring side；
45 internal thread holes；46 valve plate planes；47 first threaded portions；48 cylindrical portions；49 planes；50 second threaded portions；51 cotter-pin holds；52
With telescoping tube mating surface；53 with valve body mating surface；54 protrusions；55 inclined-planes；56 first nuts；57 split pins；58 bolts；59
Two nuts；60 valve body confined planes.
Specific embodiment
With reference to the accompanying drawing, technical scheme in the embodiment of the invention is clearly and completely described.Obviously, it is retouched
The embodiment stated is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment without making creative work, belongs to protection model of the invention
It encloses.
Flexible butterfly valve, it includes valve body 7, valve shaft, valve plate 11, valve plate sealing ring 9, valve body sealing surface 37, bracket 3.
As shown in Figs. 1-2, valve body connecting flange 18 is designed to a circle is distributed in its periphery outer rim outwardly extending
Bulge-structure, each protrusion are located between two flange holes 19, and raised 20 quantity are the half of 19 quantity of flange hole, in valve shaft
Heart line 28 is symmetrical.Raised outer circle 24 is having a size of standard flange excircle dimension, and raised inner circle 25 is having a size of flange hole center circle
26 size subtraction flange aperture, 19 size, two raised 27 angle αs of side are 40~45 °, and raised side 27 exists with adjacent flanges hole 19
Two intersection point chord length d are 8~12mm in flange hole center circle 26.It is drilled with an expansion screw through-hole 21 on each raised 20, stretches
Screw through hole 21 is located at raised 20 two neighboring 19 middle positions of flange hole in flange hole center circle 26.Convex plane 29
Upper to be evenly distributed with the flexible gland fastener hole 22 of a circle, valve body connecting flange sealing surface 23 is contacted with flexible seal ring 14.
As shown in figure 13,14 cross sectional shape of flexible seal ring is two uniformly distributed in right-angled trapezium, with telescoping tube mating surface 52
The protrusion 54 of radius 0.5mm, the protrusion 54 with two radius 0.5mm uniformly distributed in valve body mating surface 53, flexible gland with stretch
There are two the contact surfaces of contracting sealing ring, and the inclination of face and inclined-plane cooperation can be referred to as cooperation inclined-plane, a face in parallel with stretch
Contracting sealing ring upper bottom surface cooperation can be referred to as cooperation plane, with flexible gland cooperation inclined-plane 55 and valve body mating surface 53 it
Between angle β be 30 °, as shown in figure 17, the contact point of the inclined-plane of flexible seal ring and flexible gland is located at the bottom of the slope, is connect with this
Contact is that vertex is at a certain angle to shape between the upper bottom surface direction inclined-plane and flexible gland of right-angled trapezium, is come from amechanical angle
It says, more on the lower, the pretightning force that flexible gland gives flexible seal ring offer is bigger for the point of inclined-plane 55 and cooperation contact of incline plane, so that
Flexible seal ring can reliably be fitted in tube surfaces, improve sealing performance, if the gradient on inclined-plane and cooperation inclined-plane is complete
Matching, then the pretightning force that flexible gland gives flexible seal ring will be dispersed, therefore the present invention passes through to flexible seal ring
Shape designs and realizes with the matching design of flexible gland the reliable sealing of flexible seal ring.
As shown in figure 3, the tube body 31 that telescoping tube includes standard flange 30 and is fixed on standard flange with one heart, in standard law
Uniformly distributed circle limit telescopic screw flight through-hole 32,32 quantity of limit telescopic screw flight through-hole are 19 quantity of flange hole on orchid 30
Half, limit telescopic screw flight through-hole 32 in flange hole center circle 26, and be located at two neighboring 19 interposition of flange hole
It sets.As shown in figure 4, tube body is standard seamless steel pipe, standard flange 30 and pipe welding are formed, and be ensure that in suction flange end and are led to
Road diameter 33 is valve nominal diameter, and 7 outlet(discharge) flange end internal channel diameter 34 of valve body is just that valve nominal is straight in product design
Diameter, valve inlet and outlet are nominal diameter, i.e. full-bore.
As shown in figure 5, flexible butterfly valve uses two sections formula valve shaft structure.It is designed on upper valve shaft and lower valve shaft corresponding
The shaft shoulder 35, upper valve shaft 4 have a upper shaft shoulder, and the upper shaft shoulder and valve body 7 have an a shaft shoulder and valve body contact face 36 after assembly, on the upper shaft shoulder
End is equipped with sealing shroud 6 and sealing gland 5, and upper valve shaft 4 is in 28 direction upper limit of valve shaft center line at this time.To prevent sealing shroud 6
The upper shaft shoulder is compressed, increases valve opening and closing torque, to upper shaft shoulder height dimension H1 tolerance (- 0.2~-0.1) mm, to sealing
6 height dimension H2 tolerance (- 0.1~0) mm are covered, to valve body 7 boring depth size H3 tolerance (0~0.1) mm, are guaranteed
Clearance fit.
As shown in fig. 6, lower valve shaft 12 has a lower shaft shoulder, the lower shaft shoulder and valve body 7 have a shaft shoulder and valve body contact after assembly
Face 36, lower shaft shoulder another side are withstood by end cap 13, and lower valve shaft 12 is in 28 direction upper limit of valve shaft center line at this time.To prevent end cap
13 hold out against the lower shaft shoulder, increase valve opening and closing torque, to the 35 height dimension H4 tolerance (- 0.2 of the lower shaft shoulder of lower valve shaft 12
~-0.1) mm, to end cap 13 height dimension H5 tolerance (- 0.1~0) mm, to 7 boring depth size H6 tolerance of valve body
(0~0.1) mm guarantees clearance fit.
As shown in fig. 7, upper valve shaft 4, lower valve shaft 12 are connect by pin shaft 10 with valve plate 11, when the vertical installation (valve shaft of valve
Straight up) on pipeline, valve plate 11 is hung on valve body 7 by upper valve shaft 4, and valve plate 11 withstands on end cap 13 by lower valve shaft 12
On, 11 both ends of valve plate position on 28 direction of valve shaft center line, guarantee valve plate sealing ring 9 and 37 circumferencial direction mistake of valve body sealing surface
The uniformity for the amount of being full of avoids valve plate 11 because self weight is fallen, and increases 12 direction valve plate sealing ring 9 of lower valve shaft and 37 mistake of valve body sealing surface
The amount of being full of damages valve plate sealing ring 9 in valve opening and closing.
As shown in figure 8, valve plate sealing ring 9 is installed on valve plate 11, pressing plate 8 is adjusted by bridge screw 39 and is installed on valve plate
On 11, valve plate sealing ring 9 and 37 circumferencial direction magnitude of interference of valve body sealing surface are adjusted by adjusting the screw-down torque of bridge screw 39,
Valve is set to keep sealing.Adjusting uniformly distributed circle bridge screw 39, the linear distance of each adjacent two bridge screw 39 on pressing plate 8 is
The nominal diameter of 6~8 times of bridge screw 39 is equipped with circular cone dual-lug type stop washer 38 on each bridge screw 39, with
Prevent the loosening of bridge screw 39 from falling.
As shown in figure 9, the main body of circular cone dual-lug type stop washer 38 is a taper cone barrel 40, the inner cone size of taper cone barrel 40
It is consistent with the circular cone size of matched bridge screw 39, a screech owl 41 is evenly equipped on 40 big end of taper cone barrel, 180 ° of directions
With a cropped ear 42.
As shown in Figure 10, the assembling process of bridge screw and circular cone dual-lug type stop washer is as follows: the first step, by pressing plate spiral shell
Nail 39 is inserted in circular cone dual-lug type stop washer 38, and bridge screw 39 passes through the bridge screw hole adjusted on pressing plate 8 and is screwed on valve plate 8
Corresponding threaded hole after bridge screw 39 is tightened, makes screech owl 41 towards the outer circular direction of pressing plate 8 is adjusted, makes cropped ear 42 towards adjusting
Circular direction in pressing plate 8.Second step knocks in screech owl 41 in the interior hexagonal counterbore of bridge screw 39, is bonded with a plane.Third
Cropped ear 42 is knocked on adjusting 8 inner periphery of pressing plate and is bonded with inner peripheral surface by step.
As shown in figure 11, the centre for adjusting each adjacent two bridge screw 39 on pressing plate 8 is drilled with hexagonal in an installation and puts down
The internal thread hole 45 of holding screw 43 is held, before boring internal thread hole 45, brill thread Pilot hole φ A first connects from adjusting pressing plate later
44 tapping of sealing ring side is touched, institute's tapping distance, which is attacked, wears position reservation 1mm, guarantees that the length of hexagonal flush end holding screw 43 is small
In the length of internal thread hole 45.Installation steps: firstly, by hexagonal flush end holding screw 43 from adjust pressing plate Contact Seal ring side 44
It is fully screwed into internal thread hole 45；Then, installation and adjustment pressing plate 8 screws on bridge screw 39 in conjunction with Fig. 8-10 description.Finally, rotation
Hexagonal flush end holding screw 43, withstands on it in valve plate plane 46.The bridge screw 39 on pressing plate 8 is adjusted to press pressing plate 8 is adjusted
To valve plate 11, hexagonal flush end holding screw 43 will adjust pressing plate 8 and be lifted off butterfly plate 11, one top of a pressure secures and adjusts pressing plate 8
Position ensure that valve plate sealing ring 9 and 37 circumferencial direction magnitude of interference of valve body sealing surface, and produce pretightning force, to bridge screw
39 is locking with the progress of hexagonal flush end holding screw 43 pretightning force, and circular cone dual-lug type stop washer is also equipped on bridge screw 39
38 progress are mechanical locking, and dual anti-loosing effect guarantees that bridge screw 39 does not loosen.
It is locking using circular cone dual-lug type stop washer to the bridge screw adjusted on pressing plate, holding screw is stopped using screw thread
Mouth is locking.
Figure 12: limit telescopic screw rod 17 is mainly by three Duan Zucheng: the first threaded portions 47, cylindrical portion 48；Second threaded portion 50.
In the limit telescopic screw flight through-hole 32 that first threaded portion 47 is used to be screwed on telescoping tube 16,47 length H7 ratio of the first threaded portion
The 32 short 3~5mm of depth of limit telescopic screw flight through-hole.48 length of cylindrical portion is 25~30mm, mills two in 48 outer circle of cylinder
A plane 49, plane width H10 are greater than 10mm, and monkey wrench can rotate it.Second threaded portion 50 passes through valve body 7
Expansion screw through-hole 21 in protrusion 20,50 length H9 of the second threaded portion is depending on the distance of stretch out and draw back of flexible butterfly valve, second
Cotter-pin hold 51 is drilled on threaded portion 50,51 position of cotter-pin hold is depending on distance of stretch out and draw back.
As shown in figure 14, when limit telescopic butterfly valve normal mounting position, structure length L.Nut 59 and split pin 57
Between be labeled with size+△ L, represent telescoping tube 16 can to 7 out-draw of valve body distance be △ L, longest structure length be L+ △ L.
Size-△ L is labeled between telescoping tube 16 and valve body 7, distance can be pushed into valve body 7 as △ L, most short knot by representing telescoping tube 16
Structure length is L- △ L.Specific installation steps:
First threaded portion 47 of expansion screw 17 is fully screwed into the limit telescopic screw flight through-hole 32 on telescoping tube 16, In
The first nut 56 is screwed on second threaded portion 50, it, will by flexible gland 15 with the first rear enclosure of flexible seal ring 14 on telescoping tube 16
Telescoping tube 16 is inserted in valve body 7, and the second threaded portion 50 passes through the expansion screw through-hole 21 in the protrusion 20 of valve body 7, in the second spiral shell
It is screwed into the second nut 59 in line portion 50, limit telescopic butterfly valve is adjusted to normal structure length L, the first nut 56 and the second nut
59 tighten in protrusion 20 respectively, fix structure length L, and split pin 57 is packed into the cotter-pin hold 51 on the second threaded portion 50
It is interior.Flexible seal ring 14 is shifted into valve body 7, makes the valve body mating surface 53 and valve body connecting flange sealing surface 23 of flexible seal ring 14
Contact, 14 sets of flexible seal ring in flexible gland 15, flexible gland 15 is fastened on valve body 7 by bolt 58, is stretched and is sealed
The four sides of circle 14 is encased by flexible gland 15, telescoping tube 16, valve body 7 respectively, applies screw-down torque to bolt 58, and stretch gland 15
Flexible seal ring 14 is squeezed, flexible seal ring 14 is rubber parts, after being squeezed and deformed, flexible seal ring 14 and valve body
Seal pressure is formed between connecting flange sealing surface 23, forms seal pressure between flexible seal ring 14 and telescoping tube 16, then plus
Upper 14 Shang of flexible seal ring, tetra- protrusion 54, so that sealing effect is more preferable.
As shown in figure 15, on the basis of Figure 14, the bolt 58 to come loose on flexible gland 15 is in flexible seal ring 14
Relaxation state, the first nut 56 to come loose on expansion screw 17 firmly push telescoping tube 16 into valve body 7, push up telescoping tube 16
It is at this time limit telescopic butterfly valve most short structure length L- △ L, between the second nut 59 and split pin 57 on valve body confined planes 60
Having a size of+2 △ L.First nut 56 is tightened in protrusion 20 respectively with the second nut 59, by the bolt 58 on flexible gland 15
It tightens, flexible seal ring 14 is made to keep sealing.
As shown in figure 16, on the basis of Figure 14, the bolt 58 to come loose on flexible gland 15 is in flexible seal ring 14
Relaxation state, the second nut 59 to come loose on expansion screw 17, rotates the second nut 59 to 57 direction of split pin, until opening
Pin 57 limits.Firmly to 7 out-draw telescoping tube 16 of valve body, until the second nut 59 is pressed in protrusion 20.It is at this time limit telescopic
Butterfly valve longest structure length L+ △ L, having a size of -2 △ L between telescoping tube 16 and valve body 7.First nut 56 is twisted in protrusion 20
Tightly, while tightening the first nut 56, the second nut 59 is also pressed in protrusion 20, and the bolt 58 on flexible gland 15 is twisted
Tightly, flexible seal ring 14 is made to keep sealing.
Out-draw and interior pushing of the telescoping tube to valve body have limit, prevent from overstretching and cross to push.
Telescoping tube can increase the structure length of flexible butterfly valve to valve body out-draw, and telescoping tube is pushed into valve body, can reduce
The structure length of flexible butterfly valve is protected so that flexible butterfly valve structure length be made to match with length in reserve between two flange of construction site
Demonstrate,prove the installation of flexible butterfly valve.
Driving device 1 drives upper valve shaft to rotate clockwise by flat key 2, and upper valve shaft drives 11 up time of valve plate by pin shaft 10
Needle rotation, valve, which is realized, closes；Driving device drives upper valve shaft to rotate counterclockwise by flat key, and upper valve shaft drives valve by pin shaft
Plate rotates counterclockwise, and valve, which is realized, to be opened.
Claims (9)
1. flexible butterfly valve, it includes valve body, valve shaft, valve plate, valve plate sealing ring, valve body sealing surface and extensible member, it is characterized in that: institute
It states valve plate sealing ring and is fixed on valve plate by adjusting pressing plate, the adjusting pressing plate is fixed on butterfly plate by several bridge screws
On, the bridge screw is distributed around valve plate horizontal interval, and circular cone dual-lug type is equipped between adjusting pressing plate and the bridge screw
Stop washer, the circular cone dual-lug type stop washer includes conic tube compatible with the nut outer diameter of bridge screw, described
The big face of conic tube has screech owl and cropped ear, and the screech owl is fitted on the nut of bridge screw, and the cropped ear is fitted in tune
Save the outer of pressing plate.
2. flexible butterfly valve as described in claim 1, it is characterized in that: the linear distance between two neighboring bridge screw is 6-8
Bridge screw nominal diameter again.
3. stretch butterfly valve as described in claim 1, it is characterized in that: being opened up on the adjusting pressing plate between two neighboring bridge screw
There is internal thread hole, the internal thread hole screw-internal thread fit has the holding screw contacted with butterfly plate.
4. flexible butterfly valve as described in claim 1, it is characterized in that: the extensible member includes telescoping tube, flexible gland, flexible spiral shell
Bar and valve body connecting flange, the tube body that the telescoping tube includes standard flange and is fixed on standard flange with one heart, the standard
The expansion screw through-hole and flange hole that a circle is interspersed, the circumference of the valve body connecting flange are evenly equipped on the periphery of flange
The outwardly extending protrusion of a circle is distributed in the outer rim of face, expansion screw through-hole is offered in the protrusion, the protrusion is located at phase
Between adjacent two flange holes, there is valve body connecting flange sealing surface, the valve on the periphery inner edge of the valve body connecting flange
The flexible gland fastener hole of a circle is also distributed on the periphery middle section of body connecting flange, the expansion screw includes and stretches
The first threaded portion, cylindrical portion and the expansion screw through hole whorl with valve body connecting flange of the expansion screw through hole whorl cooperation of pipe
Second threaded portion of cooperation, the flexible gland are threadedly coupled by bolt with the flexible gland fastener hole of valve body connecting flange.
5. flexible butterfly valve as claimed in claim 4, it is characterized in that: the end of two threaded portion is equipped with split pin.
6. flexible butterfly valve as claimed in claim 4, it is characterized in that: between the flexible gland, tube body and valve body connecting flange
Equipped with flexible seal ring, on the flexible seal ring and tube body contact surface and flexible seal ring and valve body connecting flange contact surface
It is respectively equipped with protrusion, so that being interference fitted between flexible seal ring and tube body and valve body connecting flange.
7. flexible butterfly valve as claimed in claim 6, it is characterized in that: the section of the flexible seal ring is right-angled trapezium, tiltedly
Face and upper bottom surface are contacted with flexible gland, and bottom surface is contacted with tube body, and right-angle surface is contacted with valve body connecting flange, described oblique
The contact point of face and flexible gland is located at the bottom of the slope, using the contact point as vertex to the upper bottom surface direction inclined-plane of right-angled trapezium and
2 ° -5 ° of angle is formed between flexible gland.
8. flexible butterfly valve as described in claim 1, it is characterized in that: the valve shaft includes upper valve shaft and lower valve shaft, the upper valve
Axis is equipped with the upper shaft shoulder, and the upper shaft shoulder is equipped with sealing shroud and sealing gland, and the sealing shroud and the upper shaft shoulder are in vertical direction
Clearance fit, the lower valve shaft are equipped with the lower shaft shoulder, and the bottom of the lower shaft shoulder is contacted with the end cap for being fixed on body base, institute
The lower shaft shoulder and valve body is stated to cooperate in vertical gap.
9. flexible butterfly valve as claimed in claim 8, it is characterized in that: the upper valve shaft and lower valve shaft pass through pin shaft and valve plate respectively
Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910609668.9A CN110388472A (en) | 2019-07-08 | 2019-07-08 | Flexible butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910609668.9A CN110388472A (en) | 2019-07-08 | 2019-07-08 | Flexible butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110388472A true CN110388472A (en) | 2019-10-29 |
Family
ID=68286294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910609668.9A Pending CN110388472A (en) | 2019-07-08 | 2019-07-08 | Flexible butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110388472A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2890526Y (en) * | 2006-01-13 | 2007-04-18 | 章祖翼 | Limit telescopic butterfly valve |
| CN201748073U (en) * | 2010-07-14 | 2011-02-16 | 李良伟 | Double flange transmission joint |
| CN202349497U (en) * | 2011-11-29 | 2012-07-25 | 北京中海威环保科技有限公司荥阳制造分公司 | Large-deflection loose tube compensation joint |
| CN203082234U (en) * | 2012-05-21 | 2013-07-24 | 中广核工程有限公司 | Butterfly valve |
| JP2016118291A (en) * | 2014-12-24 | 2016-06-30 | アズビル株式会社 | Valve device |
| CN106051178A (en) * | 2016-07-05 | 2016-10-26 | 英诺威阀业有限公司 | High-performance butterfly valve capable of ensuring double seal |
| CN207229867U (en) * | 2017-07-14 | 2018-04-13 | 广东韬恒机电有限公司 | Center line stretches butterfly valve |
| CN210372054U (en) * | 2019-07-08 | 2020-04-21 | 英诺威阀业有限公司 | Telescopic butterfly valve |
-
2019
- 2019-07-08 CN CN201910609668.9A patent/CN110388472A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2890526Y (en) * | 2006-01-13 | 2007-04-18 | 章祖翼 | Limit telescopic butterfly valve |
| CN201748073U (en) * | 2010-07-14 | 2011-02-16 | 李良伟 | Double flange transmission joint |
| CN202349497U (en) * | 2011-11-29 | 2012-07-25 | 北京中海威环保科技有限公司荥阳制造分公司 | Large-deflection loose tube compensation joint |
| CN203082234U (en) * | 2012-05-21 | 2013-07-24 | 中广核工程有限公司 | Butterfly valve |
| JP2016118291A (en) * | 2014-12-24 | 2016-06-30 | アズビル株式会社 | Valve device |
| CN106051178A (en) * | 2016-07-05 | 2016-10-26 | 英诺威阀业有限公司 | High-performance butterfly valve capable of ensuring double seal |
| CN207229867U (en) * | 2017-07-14 | 2018-04-13 | 广东韬恒机电有限公司 | Center line stretches butterfly valve |
| CN210372054U (en) * | 2019-07-08 | 2020-04-21 | 英诺威阀业有限公司 | Telescopic butterfly valve |
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