CN109899534A - A kind of butterfly valve - Google Patents
A kind of butterfly valve Download PDFInfo
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- CN109899534A CN109899534A CN201910270255.2A CN201910270255A CN109899534A CN 109899534 A CN109899534 A CN 109899534A CN 201910270255 A CN201910270255 A CN 201910270255A CN 109899534 A CN109899534 A CN 109899534A
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- flap
- relief hole
- plugging plate
- inlet opening
- valve rod
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Abstract
The present invention provides a kind of butterfly valves, belong to valve technology field.It solves existing butterfly valve operation arduously, the lower problem of service life.This butterfly valve, including valve body and valve rod, valve rod is radially rotated and is threaded through in valve body, there is flap on valve rod, the head tank of annular is circumferentially offered on the outer peripheral surface of flap, head tank inner circumferential is equipped with rubber ring, and rubber ring protrudes head tank notch, valve rod offers inlet opening in the side of flap, relief hole is offered in the other side of flap, inlet opening is connected with head tank with relief hole, and when flap is closed water inlet towards one end of valve inleting water, one end that relief hole is discharged towards valve body, the closeouts that relief hole can be blocked when flap is closed are additionally provided in flap, valve rod, which is equipped with, can make closeouts open relief hole and block the operating mechanism of inlet opening.The operation of this butterfly valve is more laborsaving, and service life is higher.
Description
Technical field
The invention belongs to valve technology fields, are related to a kind of butterfly valve.
Background technique
Butterfly valve is called flap valve, is a kind of relatively simple regulating valve of structure, can be used for the switch control of pipeline medium, butterfly
The closure member of valve is disk, and open and close are reached around valve shaft rotation, cutting and throttling action, butterfly are mainly played on pipeline
Valve is sealed by discoid flap edge and valve interior wall against being formed, and the two is usually hard sealing, but with using
Abrasion in journey, the sealing effect sealed firmly can gradually be deteriorated, and the butterfly valve having thus fixes a circle rubber in the outer edge of flap
Sealing element realizes sealing by the tight fit between rubber seal and valve interior wall, and in order to guarantee that sealing effect, rubber are close
Pressing force is larger between sealing and valve body, but this cause flap open and close resistance it is big, operate it is more laborious and biggish
Pressing force also causes rubber seal abrasion and deformation aging, service life lower.
Summary of the invention
The purpose of the present invention is there is the above problem in view of the prior art, a kind of butterfly valve is proposed, this butterfly valve operates more
Add laborsaving, service life is higher.
Object of the invention can be realized by the following technical scheme: a kind of butterfly valve, valve body and valve rod including tubular, institute
It states valve rod and radially rotates and be threaded through in valve body, and valve body is stretched out in one end of valve rod, the flap with plate-like on the valve rod,
It being characterized in that, the head tank of annular is circumferentially offered on the outer peripheral surface of the flap, and the head tank inner circumferential is equipped with rubber ring,
And rubber ring protrudes head tank notch, the valve rod offers inlet opening in the side of flap, offers in the other side of flap
Relief hole, the inlet opening are connected with head tank with relief hole, and when flap is closed water inlet towards valve inleting water
One end, one end that relief hole is discharged towards valve body are additionally provided with the envelope that relief hole can be blocked when flap is closed in flap
Blocking piece, the valve rod, which is equipped with, can make closeouts open relief hole and block the operating mechanism of inlet opening.
When butterfly valve is in close state, closeouts block relief hole, and inlet opening is connected to water inlet end at this time, water inlet
The water at end is entered in head tank by inlet opening and acts on rubber ring, i.e., rubber ring is pressed on valve by the hydraulic pressure of water inlet end
On internal wall, to realize the sealing between flap and valve body, closeouts are made by operating mechanism when needing breakdown butterfly valve
Inlet opening is blocked, while opening relief hole, the hydraulic pressure in head tank is released at this time, and rubber ring loses the pressure between valve body
Clamp force, thus rotate flap it is more laborsaving, and due to rotation when rubber ring and valve body between pressing force it is smaller, rubber ring
Abrasion, deformation etc. it is smaller, can be improved the service life of rubber ring, and then improve the service life of entire butterfly valve.
In above-mentioned butterfly valve, the rubber ring is in hollow structure, and the cross section of rubber ring is in D font, the rubber
It encloses the sealing including arc-shaped protrusion head tank notch and covers the support portion of sealing inner cavity, it is circumferential on the support portion
The intercommunicating pore of several communication seals portions inner cavity and head tank is offered, the sealing of annular is circumferentially offered on the inner wall of the valve body
Slot, and the cross section of seal groove is arc-shaped, when the outer peripheral surface fitting that the flap closes upper sealing is pressed in seal groove.When
Water energy when flap is closed in head tank enough passes through intercommunicating pore and enters the medial surface in the inner cavity of sealing and acting on sealing
On so that sealing lateral surface and sealing groove groove wall fit compressions, with preferable sealing effect, and when opened butterfly valve
Water can be squeezed out inner cavity, while radial contraction deformation by sealing under the action of valve interior wall, avoid generating between valve body hard
It squeezes and influences service life.
In above-mentioned butterfly valve, the thickness of the sealing is gradually become smaller from middle part to two sides in the width direction, the branch
The two sides of support part have on the two sides cell wall of the head tank along protruding the two sides of sealing and forming annular connection convex edge
There is the recessed shoulder of annular, the connection convex edge is fixed against recessed shoulder and by pressure ring, the bottom surface of the support portion and head tank
Between have gap.So that the middle part of sealing have certain intensity, the relatively thin position deformation of sealing in opened butterfly valve,
So that sealing integrally moves inward, the gap between support portion and head tank is integrally deformed radially inward for rubber ring.
In above-mentioned butterfly valve, the inlet opening is respectively positioned on the center of flap, the flap inner circumferential with relief hole
Offer several water holes, and the length direction of water hole is arranged radially along flap, one end of several water holes with into
Water hole and relief hole are connected, and the other end is connected with head tank.The water of water inlet end enters pressure by inlet opening, water hole
Slot, then entered inside rubber ring by intercommunicating pore.
In above-mentioned butterfly valve, the valve rod is an integral structure with flap, is offered and rubber at the both ends of valve rod
The adaptable relief hole of circle, the rubber ring are each passed through two relief holes.By relief hole, so that rubber ring is in a ring, it is whole
Property it is more preferable, and then be turned up rubber ring stability and sealing effect.
In above-mentioned butterfly valve, offer columnar installation cavity in the valve rod, above-mentioned inlet opening and relief hole with peace
It behave affectedly and is connected, the closeouts include the plugging plate one and plugging plate two being fixedly connected with, the plugging plate one and plugging plate two
Cross section is arc-shaped, and plugging plate one and plugging plate two stick on installation cavity wall, the convex surface court of the plugging plate one
To the side of relief hole, the convex surface of plugging plate two is towards the side of inlet opening, and plugging plate two is higher than plugging plate one, the installation
Intracavitary to be additionally provided with spring, the lower end of the spring acts on installation cavity bottom surface, and upper end acts on plugging plate one and plugging plate two,
Plugging plate one blocks relief hole under the action of the spring, and plugging plate two is higher than inlet opening.Plugging plate under the action of the spring
One blocks relief hole, and plugging plate two is higher than inlet opening at this time, and inlet opening is opened, and passes through operating mechanism when needing opened butterfly valve
So that plugging plate one and plugging plate two overcome spring force and decline, plugging plate one is moved to below relief hole, and relief hole is opened,
Plugging plate two blocks inlet opening.
In above-mentioned butterfly valve, open up fluted on the convex surface of the plugging plate one, sliding is provided with close in the groove
Seal block, and the sealing cambered surface that sealing block has protrusion groove and is adapted with installation cavity medial surface, the sealing block and groove-bottom
There is gap between face, and offer the limbers being connected with installation cavity on the bottom surface of groove, when plugging plate one and relief hole
Sealing block can block relief hole when opposite.When butterfly valve is in close state, inlet opening is opened, and is had in installation cavity higher
Hydraulic pressure, while the water energy in installation cavity enough passes through limbers and enters in the groove of plugging plate one, so that having in groove identical
Hydraulic pressure, therefore sealing block can be pressed under the action of water pressure on installation cavity wall, improved sealing to relief hole, avoided letting out
There is drainage at hole in pressure.
In above-mentioned butterfly valve, the closeouts further include traveller, which, which slides axially, is arranged in installation cavity, institute
It states plugging plate one and plugging plate two is fixed by the connecting rod on traveller, there is limit sleeve, above-mentioned spring in the lower end of traveller
Upper end be resisted against in limit sleeve, the upper end of the traveller is fixed with pressing disc, and the operating mechanism can press down on pushing
Disk opens relief hole.Plugging plate one is slidably connected with plugging plate two by traveller realization, so that structure is more stable.
In above-mentioned butterfly valve, the operating mechanism includes the handle for rotation valve rod, which is hinged on valve rod
Upper end, and the free end of handle can be swung up and down, the upper end of the valve rod offers mounting hole, and sliding is set in the mounting hole
It being equipped with by compression leg, mounting hole should be stretched out by the upper end of compression leg, the lower end by compression leg is sequentially connected by drive rod and traveller,
And plugging plate one can be made to open relief hole and the closure of plugging plate two inlet opening, the end tool of the handle when declining by compression leg
There is press section, which is located at the top by compression leg, and press section can be pushed by compression leg when the handle is swung up.When
It is required to when needing to be turned on or off butterfly valve through handle rotation valve rod, and the first upper lift handle before rotation, so that pressing
Subordinate presses compression leg, by compression leg by drive rod push traveller so that relief hole open, intake bore closure, thus open and
Sealing not will receive the effect of hydraulic pressure in closing process, and release lever after butterfly valve is closed, spring can push up traveller upwards,
So that pressure release bore closure, inlet opening is opened, and the manipulation section of certain handle is usually longer, can be under self gravitation effect to the bottom
It is dynamic, so that compression leg is pressed in press section release.
In above-mentioned butterfly valve, it is provided in the axial direction with pilot hole in the valve rod, which is located at the two of relief hole
Side, and pilot hole is symmetrical arranged, the drive rod has two, and the sliding of two drive rods is threaded through in two pilot holes, two biographies
The upper end of lever is fixedly connected with by compression leg, and pilot hole is stretched out in the lower end of two drive rods, and solid between the lower end of two drive rods
Surely there is upper platen, columnar rubber block is fixed in the installation cavity, the outer peripheral surface of the rubber block and the inner peripheral surface of installation cavity rise
Tight fit, the rubber block are located at the top of inlet opening and relief hole, and several through holes, institute are provided in the axial direction on rubber block
It states and is vertically fixed with several top pillars on pressing disc upper side, and several top pillars are each passed through several through holes, the upper platen
Downside is resisted against the upper end of several top pillars, the top pillar and rubber block tight fit.Two pilot holes are axially arranged along valve rod, and allow
Position hole is substantially arranged radially along valve rod, and two pilot holes are located at relief hole two sides, and the two will not interfere, and wherein rubber block is used for
Two pilot holes are sealed, while top pillar and through hole tight fit, therefore can be avoided water and leaked from pilot hole, while rubber block energy
Enough circumferentially positioned to traveller progress by top pillar, two drive rods and upper platen pushing top pillar, top can be passed through by pushing when pressing compression leg
Column pushes pressing disc, to realize the movement of traveller.
Compared with prior art, this butterfly valve has the advantage that
1, it is pressed on valve interior wall due to rubber ring by hydraulic pressure effect, to realize close between flap and valve body
Envelope, makes closeouts block inlet opening, while opening relief hole, at this time pressure when needing breakdown butterfly valve by operating mechanism
Hydraulic pressure in slot is released, and rubber ring loses the pressing force between valve body, therefore it is more laborsaving to rotate flap, and due to rotation
When rubber ring and valve body between pressing force it is smaller, therefore abrasion, deformation of rubber ring etc. is smaller, can be improved making for rubber ring
With the service life, and then improve the service life of entire butterfly valve.
2, since rubber ring is in hollow structure, hydraulic pressure makes sealing lateral surface and sealing groove groove wall fit compressions, has
There is preferable sealing effect, and water can be squeezed out inner cavity by sealing under the action of valve interior wall when opened butterfly valve, simultaneously
Radial contraction deformation avoids generating hard squeeze between valve body and influencing service life.
3, enter in the groove of plugging plate one since the water energy in installation cavity enough passes through limbers, so that having phase in groove
Same hydraulic pressure, therefore sealing block can be pressed under the action of water pressure on installation cavity wall, improved the sealing to relief hole, avoided
Occurs drainage at relief hole.
It 4, since the open and close of relief hole and inlet opening are operated by handle, and is lifted before rotation valve rod
It rises, there is no need to additional operating members, and it is more preferable to operate continuity.
Detailed description of the invention
Fig. 1 is the schematic perspective view of butterfly valve.
Fig. 2 is the structural side view of butterfly valve.
Fig. 3 is the structure sectional view in Fig. 2 at A-A.
Fig. 4 is the schematic enlarged-scale view in Fig. 3 at B.
Fig. 5 is the structure top view of butterfly valve.
Fig. 6 is the structure sectional view in Fig. 5 at C-C.
Fig. 7 is the schematic perspective view of flap.
Fig. 8 is the schematic enlarged-scale view in Fig. 6 at D.
Fig. 9 is the structure sectional view in Fig. 2 at E-E.
Figure 10 is the schematic enlarged-scale view in Fig. 9 at F.
Figure 11 is the schematic enlarged-scale view in Fig. 3 at G.
In figure, 1, valve body；11, seal groove；12, water inlet end；13, water outlet；2, valve rod；21, inlet opening；22, relief hole；
23, installation cavity；24, relief hole；25, mounting hole；26, pilot hole；3, flap；31, head tank；311, recessed shoulder；312, pressure ring；
32, water hole；4, rubber ring；41, sealing；42, support portion；421, intercommunicating pore；43, convex edge is connected；5, traveller；51, it connects
Bar；52, plugging plate one；521, groove；522, limbers；523, sealing block；524, cambered surface is sealed；53, plugging plate two；54, it limits
Position set；55, pressing disc；56, top pillar；6, handle；61, press section；7, compression leg is pressed；71, drive rod；72, upper platen；8, rubber
Block；81, through hole；9, spring.
Specific embodiment
Following is a specific embodiment of the present invention in conjunction with the accompanying drawings, technical scheme of the present invention will be further described,
However, the present invention is not limited to these examples.
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of butterfly valve, valve body 1 and valve rod 2 including tubular, valve rod 2 are radially rotated and are worn
In valve body 1, and valve body 1 is stretched out in one end of valve rod 2, has the flap 3 of plate-like on valve rod 2, circumferentially opens on the outer peripheral surface of flap 3
Head tank 31 equipped with annular, 31 inner circumferential of head tank is equipped with rubber ring 4, and rubber ring 4 protrudes 31 notch of head tank, valve rod 2
Inlet opening 21 is offered in the side of flap 3, offers relief hole 22, inlet opening 21 and relief hole 22 in the other side of flap 3
It is connected with head tank 31, and one end for intaking towards valve body 1 of water inlet when flap 3 is closed, relief hole 22 is towards valve body 1
One end of water outlet, is additionally provided with the closeouts that relief hole 22 can be blocked when flap 3 is closed in flap 3, and valve rod 2 is equipped with
Closeouts can be made to open relief hole 22 and block the operating mechanism of inlet opening 21.The closeouts when butterfly valve is in close state
Relief hole 22 is blocked, inlet opening 21 is connected to water inlet end 12 at this time, and the water of water inlet end 12 enters pressure by inlet opening 21
In slot 31 and rubber ring 4 is acted on, i.e., rubber ring 4 is pressed on 1 inner wall of valve body by the hydraulic pressure of water inlet end 12, to realize
Sealing between flap 3 and valve body 1 makes closeouts block inlet opening 21 when needing breakdown butterfly valve by operating mechanism,
Relief hole 22 is opened simultaneously, the hydraulic pressure in head tank 31 is released at this time, and rubber ring 4 loses the pressing force between valve body 1, because
This rotation flap 3 it is more laborsaving, and due to rotation when rubber ring 4 and valve body 1 between pressing force it is smaller, rubber ring 4
Abrasion, deformation etc. are smaller, can be improved the service life of rubber ring 4, and then improve the service life of entire butterfly valve.
Specifically, as shown in connection with fig. 4, rubber ring 4 is in hollow structure, and the cross section of rubber ring 4 is in D font, rubber
Circle 4 includes the sealing 41 of arc-shaped protrusion 31 notch of head tank and the support portion 42 for covering 41 inner cavity of sealing, support portion
The intercommunicating pore 421 of several 41 inner cavities of communication seals portion and head tank 31 is circumferentially offered on 42, is circumferentially opened up on the inner wall of valve body 1
There is the seal groove 11 of annular, and the cross section of seal groove 11 is arc-shaped, when the outer peripheral surface that flap 3 closes upper sealing 41 is bonded pressure
Tightly in seal groove 11, the water energy when flap 3 is closed in head tank 31 enough passes through the inner cavity that intercommunicating pore 421 enters sealing 41
In and act on the medial surface of sealing 41 compression so that 41 lateral surface of sealing and 11 cell wall of seal groove fit has
Preferable sealing effect, and water can be squeezed out inner cavity by sealing 41 under the action of 1 inner wall of valve body when opened butterfly valve, simultaneously
Radial contraction deformation avoids generating hard squeeze between valve body 1 and influencing service life.The thickness of sealing 41 is in the width direction
Gradually become smaller from middle part to two sides, the two sides of support portion 42 along protrude the two sides of sealing 41 and formed annular connection it is convex
There is the recessed shoulder 311 of annular along 43, the two sides cell wall of head tank 31, connection convex edge 43 is against recessed shoulder 311 and passes through pressure ring 312
It is fixed, there is gap between support portion 42 and the bottom surface of head tank 31, so that the middle part of sealing 41 has centainly strong
Degree, the relatively thin position deformation of sealing 41 in opened butterfly valve move inward, support portion 42 and pressure so that sealing 41 is whole
Gap between slot 31 is whole deformed radially inward for rubber ring 4.Referring to figs 5 and 6, inlet opening 21 and relief hole 22
It is respectively positioned on the center of flap 3,3 inner circumferential of flap offers several water holes 32, and the length direction of water hole 32 is along valve
Valve 3 is arranged radially, and one end of several water holes 32 is connected with inlet opening 21 and relief hole 22, the other end with head tank 31
It is connected.The water of water inlet end 12 enters head tank 31 by inlet opening 21, water hole 32, then is entered in rubber ring 4 by intercommunicating pore 421
Portion.In conjunction with shown in Fig. 7, Fig. 8, valve rod 2 is an integral structure with flap 3, is offered and 4 phase of rubber ring at the both ends of valve rod 2
The relief hole 24 of adaptation, rubber ring 4 are each passed through two relief holes 24, by relief hole 24, so that rubber ring 4 is in a ring, it is whole
Property it is more preferable, and then be turned up rubber ring 4 stability and sealing effect.
In conjunction with shown in Fig. 9, Figure 10, Figure 11, columnar installation cavity 23, inlet opening 21 and relief hole 22 are offered in valve rod 2
It is connected with installation cavity 23, closeouts include the plugging plate 1 and plugging plate 2 53 being fixedly connected with, plugging plate 1 and closure
The cross section of plate 2 53 is arc-shaped, and plugging plate 1 and plugging plate 2 53 stick on 23 inner wall of installation cavity, plugging plate
One 52 convex surface is towards the side of relief hole 22, the side of the convex surface of plugging plate 2 53 towards inlet opening 21, and plugging plate 2 53
Higher than plugging plate 1, spring 9 is additionally provided in installation cavity 23, the lower end of the spring 9 acts on 23 bottom surface of installation cavity, and upper end is made
With on plugging plate 1 and plugging plate 2 53, plugging plate 1 blocks relief hole 22, and plugging plate under the action of spring 9
2 53 be higher than inlet opening 21, plugging plate 1 blocks relief hole 22 under the action of spring 9, at this time plugging plate 2 53 be higher than into
Water hole 21, inlet opening 21 are opened, and make plugging plate 1 and 2 53 grams of plugging plate by operating mechanism when needing opened butterfly valve
It takes 9 elastic force of spring and declines, plugging plate 1 is moved to 22 lower section of relief hole, and relief hole 22 is opened, and plugging plate 2 53 blocks
Inlet opening 21.Fluted 521 are opened up on the convex surface of plugging plate 1, sliding is provided with sealing block 523 in groove 521, and seals
The sealing cambered surface 524 that block 523 has protrusion groove 521 and is adapted with 23 medial surface of installation cavity, sealing block 523 and groove 521
There is gap between bottom surface, and offer the limbers 522 being connected with installation cavity 23 on the bottom surface of groove 521, work as plugging plate
1 it is opposite with relief hole 22 when sealing block 523 can block relief hole 22, when butterfly valve is in close state, inlet opening 21
It opens, hydraulic pressure with higher in installation cavity 23, while the water energy in installation cavity 23 enough passes through limbers 522 and enters plugging plate one
In 52 groove 521, so that hydraulic pressure having the same in groove 521, therefore sealing block 523 can be pressed under the action of water pressure
On 23 inner wall of installation cavity, the sealing to relief hole 22 is improved, avoids drainage occur at relief hole 22.Closeouts further include sliding
Column 5, which, which slides axially, is arranged in installation cavity 23, and plugging plate 1 and plugging plate 2 53 are solid by connecting rod 51
It is scheduled on traveller 5, there is limit sleeve 54 in the lower end of traveller 5, the upper end of spring 9 is resisted against in limit sleeve 54, the upper end of traveller 5
It is fixed with pressing disc 55, operating mechanism can press down on pressing disc 55 and relief hole 22 is opened, plugging plate 1 and closure
Plate 2 53 is slidably connected by the realization of traveller 5, so that structure is more stable.Operating mechanism includes the handle for rotation valve rod 2
6, which is hinged on the upper end of valve rod 2, and the free end of handle 6 can be swung up and down, and the upper end of valve rod 2 offers installation
Hole 25, the interior sliding of mounting hole 25 are provided with by compression leg 7, should be stretched out mounting hole 25 by the upper end of compression leg 7, and be led to by the lower end of compression leg 7
It crosses drive rod 71 and traveller 5 is sequentially connected, and plugging plate 1 can be made to open relief hole 22 when declining by compression leg 7 and blocked
Plate 2 53 blocks inlet opening 21, and the end of handle 6 has press section 61, which is located at the top by compression leg 7, works as handle
6 press sections 61 when being swung up can be pushed by compression leg 7, be required to when needing to be turned on or off butterfly valve by 6 turns of handle
Ovable valve stem 2, and the first upper lift handle 6 before rotation is passed through under drive rod 71 so that press section 61 pushes and presses compression leg 7 by compression leg 7
Traveller 5 is pressed, so that relief hole 22 is opened, inlet opening 21 is closed, so that sealing 41 will not be by during opening and closing
To the effect of hydraulic pressure, the release lever 6 after butterfly valve is closed, spring 9 can push up traveller 5 upwards, so that relief hole 22 is closed, water inlet
Hole 21 is opened, and the manipulation section of certain handle 6 is usually longer, can be under self gravitation effect to lower swing, so that press section 61
Compression leg 7 is pressed in release.Pilot hole 26 is provided in the axial direction in valve rod 2, which is located at the two sides of relief hole 24, and is oriented to
Hole 26 is symmetrical arranged, and the drive rod 71 has two, and the sliding of two drive rods 71 is threaded through in two pilot holes 26, two drive rods 71
Upper end be fixedly connected with by compression leg 7, pilot hole 26 is stretched out in the lower end of two drive rods 71, and between the lower end of two drive rods 71
It is fixed with platen 72, is fixed with columnar rubber block 8 in installation cavity 23, the outer peripheral surface of the rubber block 8 is interior with installation cavity 23
The cooperation of circumferential surface tensioner, rubber block 8 are located at the top of inlet opening 21 and relief hole 22, are provided in the axial direction on rubber block 8 several
Through hole 81 is vertically fixed with several top pillars 56 on 55 upper side of pressing disc, and several top pillars 56 are each passed through several through holes
81, the downside of upper platen 72 is resisted against the upper end of several top pillars 56, top pillar 56 and 8 tight fit of rubber block, two pilot holes, 26 edge
The axial setting of valve rod 2, and relief hole 24 is substantially arranged radially along valve rod 2, two pilot holes 26 are located at 24 two sides of relief hole, and the two is not
It can interfere, wherein rubber block 8 is used to seal two pilot holes 26, while top pillar 56 and 81 tight fit of through hole, therefore energy
Water is enough avoided to leak from pilot hole 26, while rubber block 8 can carry out circumferentially positioned, pushing pressing by top pillar 56 to traveller 5
Top pillar 56 can be pushed by two drive rods 71 and upper platen 72 when column 7, top pillar 56 pushes pressing disc 55, to realize traveller 5
Movement.
Claims (10)
1. a kind of butterfly valve, valve body (1) and valve rod (2) including tubular, the valve rod (2) radially rotate and are threaded through valve body (1)
It is interior, and valve body (1) is stretched out in one end of valve rod (2), with the flap (3) of plate-like on the valve rod (2), which is characterized in that described
The head tank (31) of annular is circumferentially offered on the outer peripheral surface of flap (3), head tank (31) inner circumferential is equipped with rubber ring
(4), and rubber ring (4) protrudes head tank (31) notch, and the valve rod (2) offers inlet opening (21) in the side of flap (3),
Offered relief hole (22) in the other side of flap (3), the inlet opening (21) and relief hole (22) with head tank (31) phase
Connection, and one end that water inlet is intake towards valve body (1) when flap (3) are closed, relief hole (22) are discharged towards valve body (1)
One end is additionally provided with the closeouts that relief hole (22) can be blocked when flap (3) are closed, the valve rod (2) in flap (3)
Being equipped with can make closeouts open relief hole (22) and block the operating mechanism of inlet opening (21).
2. butterfly valve according to claim 1, which is characterized in that the rubber ring (4) is in hollow structure, and rubber ring (4)
Cross section be in D font, the rubber ring (4) include it is arc-shaped protrusion head tank (31) notch sealing (41) and cover
The support portion (42) of sealing (41) inner cavity, circumferentially offer on the support portion (42) several communication seals portion (41) inner cavities with
The intercommunicating pore (421) of head tank (31) circumferentially offers the seal groove (11) of annular on the inner wall of the valve body (1), and seals
The cross section of slot (11) is arc-shaped, and when the flap (3) are closed, the outer peripheral surface fitting of sealing (41) is pressed on seal groove
(11) in.
3. butterfly valve according to claim 2, which is characterized in that the thickness of the sealing (41) is in the width direction by middle part
It is gradually become smaller to two sides, the two sides of the support portion (42) along the two sides of protrusion sealing (41) and form annular connection
Convex edge (43) has the recessed shoulder (311) of annular on the two sides cell wall of the head tank (31), and the connection convex edge (43) is against recessed
Shoulder (311) is simultaneously fixed by pressure ring (312), has gap between the support portion (42) and the bottom surface of head tank (31).
4. butterfly valve according to claim 1 or 2 or 3, which is characterized in that the inlet opening (21) and relief hole (22) equal position
In the center of flap (3), flap (3) inner circumferential is offered several water holes (32), and the length of water hole (32)
Direction is arranged radially along flap (3), and one end of several water holes (32) is connected with inlet opening (21) and relief hole (22)
Logical, the other end is connected with head tank (31).
5. butterfly valve according to claim 4, which is characterized in that the valve rod (2) is an integral structure with flap (3),
The both ends of valve rod (2) offer the relief hole (24) being adapted with rubber ring (4), and the rubber ring (4), which is each passed through two, to allow
Position hole (24).
6. butterfly valve according to claim 1 or 2 or 3, which is characterized in that offer columnar installation in the valve rod (2)
Chamber (23), above-mentioned inlet opening (21) and relief hole (22) are connected with installation cavity (23), and the closeouts include being fixedly connected with
The cross section of plugging plate one (52) and plugging plate two (53), the plugging plate one (52) and plugging plate two (53) is arc-shaped, and
Plugging plate one (52) and plugging plate two (53) stick on installation cavity (23) inner wall, the convex surface direction of the plugging plate one (52)
The side of relief hole (22), the convex surface of plugging plate two (53) is towards the side of inlet opening (21), and plugging plate two (53) is higher than envelope
Closure plate one (52), the installation cavity (23) is interior to be additionally provided with spring (9), and the lower end of the spring (9) acts on installation cavity (23) bottom surface
On, upper end acts on plugging plate one (52) and plugging plate two (53), and plugging plate one (52) blocks under the action of spring (9)
Relief hole (22), and plugging plate two (53) is higher than inlet opening (21).
7. butterfly valve according to claim 6, which is characterized in that opened up on the convex surface of the plugging plate one (52) fluted
(521), sliding is provided with sealing block (523) in the groove (521), and sealing block (523) have protrusion groove (521) and with
The adaptable sealing cambered surface (524) of installation cavity (23) medial surface, has between the sealing block (523) and groove (521) bottom surface
Gap, and the limbers (522) being connected with installation cavity (23) is offered on the bottom surface of groove (521), when plugging plate one (52)
Sealing block (523) can block relief hole (22) when opposite with relief hole (22).
8. butterfly valve according to claim 7, which is characterized in that the closeouts further include traveller (5), traveller (5) edge
Setting slide axially in installation cavity (23), the plugging plate one (52) and plugging plate two (53) are fixed by connecting rod (51)
On traveller (5), there are limit sleeve (54) in the lower end of traveller (5), the upper end of above-mentioned spring (9) is resisted against limit sleeve (54)
Interior, the upper end of the traveller (5) is fixed with pressing disc (55), and the operating mechanism can press down on pressing disc (55) and to let out
Hole (22) are pressed to open.
9. butterfly valve according to claim 8, which is characterized in that the operating mechanism includes the hand for rotation valve rod (2)
Handle (6), which is hinged on the upper end of valve rod (2), and the free end of handle (6) can be swung up and down, the valve rod (2)
Upper end offer mounting hole (25), sliding is provided with by compression leg (7) in the mounting hole (25), should be by the upper end of compression leg (7)
It stretches out mounting hole (25), the lower end by compression leg (7) is sequentially connected by drive rod (71) and traveller (5), and is worked as and pressed compression leg
(7) plugging plate one (52) can be made to open relief hole (22) when declining and plugging plate two (53) blocks inlet opening (21), the hand
The end of handle (6) has press section (61), which is located at the top by compression leg (7), when the handle (6) is put upwards
Press section (61) can be pushed by compression leg (7) when dynamic.
10. butterfly valve according to claim 9, which is characterized in that be provided in the axial direction with pilot hole in the valve rod (2)
(26), which is located at the two sides of relief hole (24), and pilot hole (26) is symmetrical arranged, and the drive rod (71) has
Two, and two drive rods (71) sliding is threaded through in two pilot holes (26), the upper end of two drive rods (71) is and by compression leg
(7) it is fixedly connected with, the lower end of two drive rods (71) is stretched out pilot hole (26), and is fixed between the lower end of two drive rods (71)
Platen (72), the installation cavity (23) is interior to be fixed with columnar rubber block (8), the outer peripheral surface and installation cavity of the rubber block (8)
(23) inner peripheral surface tensioner cooperation, the rubber block (8) is located at the top of inlet opening (21) and relief hole (22), in rubber block
(8) it is provided in the axial direction on several through holes (81), is vertically fixed with several top pillars (56) on pressing disc (55) upper side,
And several top pillars (56) are each passed through several through holes (81), the downside of the upper platen (72) is resisted against several top pillars (56)
Upper end, the top pillar (56) and rubber block (8) tight fit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910270255.2A CN109899534B (en) | 2019-04-04 | 2019-04-04 | Butterfly valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910270255.2A CN109899534B (en) | 2019-04-04 | 2019-04-04 | Butterfly valve |
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| Publication Number | Publication Date |
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| CN109899534A true CN109899534A (en) | 2019-06-18 |
| CN109899534B CN109899534B (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910270255.2A Active CN109899534B (en) | 2019-04-04 | 2019-04-04 | Butterfly valve |
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| Country | Link |
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| CN (1) | CN109899534B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111173987A (en) * | 2020-02-04 | 2020-05-19 | 邵立坤 | Pre-decompression butterfly valve |
| CN111350830A (en) * | 2020-03-26 | 2020-06-30 | 陈少同 | Butterfly valve |
| CN111350833A (en) * | 2020-03-26 | 2020-06-30 | 陈少同 | Butterfly valve |
| CN114263751A (en) * | 2021-12-11 | 2022-04-01 | 李岸隆 | Scour prevention butterfly valve |
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| CN105065695A (en) * | 2015-08-11 | 2015-11-18 | 天津市精沃阀门科技有限公司 | Sewage treatment butterfly valve |
| CN205504017U (en) * | 2016-04-14 | 2016-08-24 | 江苏神通阀门股份有限公司 | Self -sealing structure of pressurization butterfly valve |
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| CN2087716U (en) * | 1991-02-25 | 1991-10-30 | 杨文华 | High-pressure cone-sealed type butterfly valve |
| JPH08219298A (en) * | 1995-02-13 | 1996-08-27 | Mitsubishi Heavy Ind Ltd | Stop valve |
| CN1214425A (en) * | 1997-10-10 | 1999-04-21 | 杨永祥 | Relief change-over butterfly valve |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111173987A (en) * | 2020-02-04 | 2020-05-19 | 邵立坤 | Pre-decompression butterfly valve |
| CN111173987B (en) * | 2020-02-04 | 2021-07-23 | 泉瓦特斯阀门有限公司 | Pre-decompression butterfly valve |
| CN111350830A (en) * | 2020-03-26 | 2020-06-30 | 陈少同 | Butterfly valve |
| CN111350833A (en) * | 2020-03-26 | 2020-06-30 | 陈少同 | Butterfly valve |
| CN114263751A (en) * | 2021-12-11 | 2022-04-01 | 李岸隆 | Scour prevention butterfly valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109899534B (en) | 2020-06-02 |
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Address after: 311401 no.15-2, Mashan Road, Changkou Town, Fuyang District, Hangzhou City, Zhejiang Province Patentee after: Zhejiang Lansheng Intelligent Equipment Co.,Ltd. Address before: 311401 building 4, No.1, No.2 Road, Dongzhou industrial functional zone, Dongzhou street, Fuyang City, Hangzhou City, Zhejiang Province Patentee before: HANGZHOU LANSHENG VALVE Co.,Ltd. |
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Denomination of invention: Butterfly valve Effective date of registration: 20220118 Granted publication date: 20200602 Pledgee: Zhejiang Fuyang rural commercial bank Limited by Share Ltd. Dongzhou branch Pledgor: Zhejiang Lansheng Intelligent Equipment Co.,Ltd. Registration number: Y2022330000031 |
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