CN106678378B - A kind of intermittent driving non-abrasion hard-sealing butterfly valve - Google Patents
A kind of intermittent driving non-abrasion hard-sealing butterfly valve Download PDFInfo
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- CN106678378B CN106678378B CN201710185951.4A CN201710185951A CN106678378B CN 106678378 B CN106678378 B CN 106678378B CN 201710185951 A CN201710185951 A CN 201710185951A CN 106678378 B CN106678378 B CN 106678378B
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- valve rod
- butterfly
- rod set
- valve body
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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
- F16K1/221—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 specially adapted operating means therefor
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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
- F16K1/222—Shaping of 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
- F16K1/16—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
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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
- F16K1/2268—Sealing means for the axis of rotation
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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
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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
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
A kind of intermittent driving non-abrasion hard-sealing butterfly valve of the present invention, it is characterised in that the butterfly valve includes valve body, removable valve seat, valve rod, lower valve rod set, upper valve rod set, butterfly plate and intermittent drive device；Described valve body or so is equipped with the flange perpendicular to valve axis, which is used for the connection of butterfly valve and pipe flange, and the upper/lower terminal of valve body offers upper valve rod sets of holes and lower valve rod sets of holes, and the cavity of valve body is stepped hole；Upper valve rod set and lower valve rod set are penetrated by upper valve rod sets of holes and lower valve rod sets of holes in valve body respectively, a set of cups are both provided between upper valve rod set and lower valve rod set and valve body, a set of cups and valve body are bolted, and adjust pad is equipped between a set of cups and valve body；The same busbar upper and lower ends of upper valve rod set offer flat key slot, and the lower end of upper valve rod set is fixed with overhead cam by flat key, and upper end is connect with intermittent drive device；The upper end of lower valve rod set offers flat key slot, and is fixed with lower cam by flat key；Transmission axle is housed between overhead cam and lower cam.
Description
Technical field
The present invention relates to butterfly valve technical field, especially a kind of intermittent driving non-abrasion hard-sealing butterfly valve.
Background technology
Since general butterfly valve seal performance is good, it is simple in structure the features such as, be widely used in chemical industry, city gas, Shui Chu
In the general industries such as reason.But because of its design feature and sealing characteristics so that butterfly valve exists when opening and closing between sealing pair
Larger friction, while the deformation of sealing element is also larger so that the torque of opening/shutting valve increases, and opens and closes speed and slows down.Due to close
The secondary degree of wear of envelope differs, and causes the seal pressure between sealing pair to be not fixed, influences the sealing stability of butterfly valve.Frequently open
It closes butterfly valve and be easy to cause sealing surface wear, sealing performance declines, and eventually leads to valve leak (damage) failure.For this purpose, applicant
Prior authorization patent " a kind of non-abrasion hard-sealing butterfly valve " (ZL200710150352.5) preferably solves the problems, such as this：Its valve seat is
The moving valve base that can make the ring-shaped structure moved axially along valve interior wall, matches with the sealing element mounted on butterfly plate edge
Constitute sealing pair.The side of valve body is fixed with lateral body, and is equipped with spring between the outer end face and lateral body of movable valve base.Valve seat
Inner face is connected by push rod with valve rod.The upper and lower part of valve rod offers curved groove respectively, and upper and lower push rod one end is mounted on
Cylindrical roller, roller are embedded in curved groove.Long keyway is offered in the middle part of valve rod, being equipped on long keyway can be along its sliding
Upper feather key and lower feather key.When butterfly valve is opened, valve rod first moves upwards, and roller is moved along curved groove, and push rod pushes valve seat along valve body
Axis moves, and sealing surface is detached from, and realizes off-load, avoids the friction of sealing pair between valve seat and butterfly plate, then rotary valve rod, on
Lower key drives butterfly plate rotation, and then realizes that butterfly valve is opened.Thereon although this butterfly valve reduces abrasion, but still has the disadvantage that：
1. offering curved groove and long keyway on valve rod respectively, valve rod intensity is greatly reduced；2. complicated, process for machining and manufacturing and
Assembly technology is complicated, of high cost；3. valve rod will be moved upwards first, then rotate again, it is complicated for operation；4. type of drive is single, no
Easily realize electric drive；5. sealed cover ratio pressure is not uniform enough.
Invention content
In view of the deficiencies of the prior art, the technical issues of present invention intends to solve be：A kind of intermittent driving wear-less hard is provided
Sealed butterfly valve, the butterfly valve under positive stream and reverse flow state can Open valve, with the intermittent nature of indexing mechanism, in driving week
In phase so that the butterfly valve can realize that removable valve seat moves axially in valve body, sealing pair in the case of a power source
Between separation without abrasion, ensure that butterfly valve off-load is opened, reduce media impingement power, effectively reduce driving moment, manufacturing process is simple,
It is easy to maintain, when driving power source various, while ensureing that butterfly valve is closed, there is uniform seal pressure, can effectively carry
The sealing performance and extension butterfly valve service life of high valve.
The present invention solve the technical problem technical solution be：A kind of intermittent driving non-abrasion hard-sealing butterfly valve is designed,
It is characterized in that the butterfly valve includes valve body, removable valve seat, valve rod, lower valve rod set, upper valve rod set, butterfly plate and intermittent driving dress
It sets；Described valve body or so is equipped with the flange perpendicular to valve axis, which is used for the connection of butterfly valve and pipe flange, and valve body
Upper/lower terminal offer upper valve rod sets of holes and lower valve rod sets of holes, the cavity of valve body is stepped hole；Upper valve rod set and lower valve rod set
It is penetrated in valve body by upper valve rod sets of holes and lower valve rod sets of holes, is respectively provided between upper valve rod set and lower valve rod set and valve body respectively
There is a set of cups, a set of cups and valve body are bolted, and adjust pad is equipped between a set of cups and valve body；The same busbar of upper valve rod set
Upper and lower ends offer flat key slot, and the lower end of upper valve rod set is fixed with overhead cam by flat key, and upper end is filled with intermittent driving
Set connection；The upper end of lower valve rod set offers flat key slot, and is fixed with lower cam by flat key；It is filled between overhead cam and lower cam
There is transmission axle；
The butterfly plate is single eccentric structure, and butterfly plate side is symmetrical with butterfly plate axis face and is welded with a pair of of ears connecting plate, double
Dowel hole is offered on ear connecting plate, it is symmetrical above and below to be provided with tightening on the outer end face that ears connecting plate is parallel to butterfly plate side
Threaded hole is coordinated with the dowel hole on ears connecting plate by flat key and connect the middle part of butterfly plate and valve rod, axial to rely on tightening
Screw is realized with the cooperation of tightening threaded hole and is fixed；
The movable valve holder structure is annular shape, is mounted in valve body, and can be moved as axis along the endoporus of valve body；It can
The outer end side of movable valve base is equipped with valve seat end cap, and valve body, valve seat end cap and removable valve seat three are equipped with close at cooperation
Seal, removable there are axial gaps between valve seat and valve seat end cap, and move and be equipped with one group of dish between valve seat and valve body
Spring；The original state of the disc spring has decrement, and compressing force acts on the pressure on removable valve seat more than fluid media (medium)；
The removable valve seat inner face keeps line to contact with overhead cam and lower cam always；
The valve rod is multi-diameter shaft, and the diameter at valve rod both ends is more than with the stem diameter of ears connecting plate junction；Valve rod
Overlapped with the central axis of upper valve rod set and lower valve rod set, upper valve rod set and lower valve rod set are co-axially mounted with valve rod, valve rod it is upper,
Lower part is inserted into respectively in upper and lower valve stem sleeve, and the upper end of valve rod is connected by flat key and intermittent drive device, and lower end relies on lower end
Lid carries out axial restraint；
The intermittent drive device includes a driving mechanism and two indexing mechanisms, and a driving mechanism can drive two
Indexing mechanism acts, and the upper end of an indexing mechanism and valve rod connects, driving butterfly plate movement, another indexing mechanism and upper valve
Rod set top connects, and drives and moves valve seat axial movement, and two indexing mechanisms have interlocking effect, ensure the rotation of butterfly plate
Axial movement with removable valve seat does not interfere.
Compared with prior art, the advantageous effect of butterfly valve of the present invention is：
1. applicability is wide.Butterfly valve type of drive of the present invention is various, can be used it is electronic, drive manually with the modes such as surge, make
With convenient, and directionless requirement is installed.
2. service life extension, driving torque are small.Butterfly valve of the present invention passes through two intermittent drive mechanisms so that a power source point
Solution is two intermittent movements, respectively drives removable valve seat along valve body axial movement and butterfly plate rotation.It is removable when butterfly valve is opened
Dynamic valve seat first moves axially so that sealing surface is detached from, and realizes nearly 70% Unloading Effect, reduces the torsion of butterfly valve opening operation
Square.Due to Unloading Effect, causes fluid media (medium) to reduce the impact force of butterfly plate and valve rod, noise is reduced, to make butterfly valve
The more general butterfly valve of service life improves nearly 100 times.
3. seal pressure is uniform, good seal performance.It is equipped between the removable valve seat and valve seat end cap of butterfly valve of the present invention
Disc spring, disc spring has certain pre-compression force, and pre-compression force acts on the pressure on removable valve seat more than fluid media (medium).When
When butterfly valve is opened, the upper and lower cam pressing on valve stem sleeve moves valve seat so that removable valve seat is moved axially along valve body, is made
The elastic potential energy for obtaining disc spring increases, and when butterfly valve is closed, disc spring can uniformly discharge potential energy, compress and move valve seat so that is close
Cover seals, while by the self-locking performance of indexing mechanism, ensureing upper and lower cam pressing butterfly plate, improves butterfly valve seal performance.
4. simple in structure, installation accuracy requirement is relatively low, and can automatic compensation sealing gap.Butterfly valve of the present invention is due to relying on dish
The potential energy of spring compresses sealing surface, and when sealing surface installation is there are when axial gap, removable valve seat is automatic to mend under the driving of disc spring
Gap is repaid, ensures sealing performance, enhances butterfly valve reliability, while compared with generally simple, the manufacture work without abrasion butterfly valve structure
Skill is simple, of low cost.
Description of the drawings
Fig. 1 is a kind of overall structure schematic front view of embodiment of intermittent driving non-abrasion hard-sealing butterfly valve of the present invention；
Fig. 2 be Fig. 1 in the directions B to regarding schematic diagram；
Fig. 3 be Fig. 1 in the directions C to regarding schematic diagram；
Fig. 4 is A-A diagrammatic cross-sections in Fig. 1；
Fig. 5 is F-F diagrammatic cross-sections in Fig. 1；
When Fig. 6 is that switch conversion button 22 is located at the positions I Fig. 3, E-E cross-sectional views in Fig. 1；
When Fig. 7 is that switch conversion button 22 is located at the positions I Fig. 3, D-D cross-sectional views in Fig. 1；
When Fig. 8 is that switch conversion button 22 is located at the positions II Fig. 3, E-E cross-sectional views in Fig. 1；
When Fig. 9 is that switch conversion button 22 is located at the positions II Fig. 3, D-D cross-sectional views in Fig. 1；
Figure 10 is partial enlargement structural representation at G in Fig. 1.
In figure：1. drive outdoor handle, 2. limit inner handles, 3. positioning disks, 4. gland adjust pads, 5. a set of cups, 6. valve bodies,
7. convex under overhead cam, 8. valve rods, 9. lower valve rod sets, 10. removable valve seats, 11. disc springs, 12. valve seat end caps, 13. butterfly plates, 14.
Wheel, 15. upper valve rod sets, 16. times clutch disks, clutch disk on 17., ratchet, 19. transaxles, 20. bottom ratchet wheels, 21. on 18.
Tenon cylinder frame, 22. switch conversion buttons, 23. round end push rods, 24. push rod springs, 25. axis pins, pawl on 26., 27. times pawls,
28. push rod, 33. torsional springs are fixed in connecting shaft, 29. sleeves, 30. axis, 31. compressed springs, 32..
Specific implementation mode
It is further discussed below the present invention with reference to embodiment and its attached drawing, but it does not limit the protection of the claims in the present invention
Range.
A kind of intermittent driving non-abrasion hard-sealing butterfly valve (hereinafter referred to as butterfly valve, referring to Fig. 1) that the present invention designs, the butterfly valve
Including valve body 6, removable valve seat 10, valve rod 8, lower valve rod set 9, upper valve rod set 15, butterfly plate 13 and intermittent drive device；The valve
Body 6 or so be equipped with perpendicular to 6 axis of valve body flange, the flange be used for butterfly valve and pipe flange connection, and valve body 6 it is upper,
Lower both ends offer upper valve rod sets of holes and lower valve rod sets of holes, and whole valve body 6 uses casting technique, such designing and manufacturing technique letter
It is single, it is easy to process, and cost is reduced, actual production is easier to realize, the cavity of valve body 6 is stepped hole, the mesh designed in this way
Under the premise of being to ensure that removable valve seat 10 moves axially in the stepped hole of valve body 6, can guarantee the intensity requirement of valve body 6
And conducive to the radial seal with removable valve seat 10；Upper valve rod set 15 and lower valve rod set 9 pass through upper valve rod sets of holes and lower valve respectively
Rod set hole penetrates in valve body 6, and a set of cups 5, a set of cups 5 and valve body are both provided between upper valve rod set 15 and lower valve rod set 9 and valve body 6
6 are bolted, and gland adjust pad 4 is equipped between a set of cups 5 and valve body 6, ensure the leakproofness of butterfly valve；Upper valve rod set
15 same busbar upper and lower ends offer flat key slot, and the lower end of upper valve rod set 15 is fixed with overhead cam 7, upper end by flat key
It is connect with intermittent drive device；The upper end of lower valve rod set 9 offers flat key slot, and is fixed with lower cam 14 by flat key；It is convex
Make to ensure the synchronous rotation of overhead cam 7 and lower cam 14 equipped with transmission axle 28 (referring to Fig. 2) between wheel 7 and lower cam 14
About 10 valve seat stress simultaneously must be moved, can smoothly realize that axial movement carries out off-load, and then reduce driving moment,
Increase keying speed；
The butterfly plate 13 is single eccentric structure, and 13 side of butterfly plate is symmetrical with 13 axis face of butterfly plate and is welded with a pair of of ears connection
Plate offers dowel hole on ears connecting plate, symmetrical above and below to open on the outer end face that ears connecting plate is parallel to 13 side of butterfly plate
There is tightening threaded hole, is coordinated with the dowel hole on ears connecting plate by flat key and connect butterfly plate 13 with the middle part of valve rod 8, it is axial
It realizes and fixes by holding screw and the cooperation of tightening threaded hole；
10 structure of removable valve seat is annular shape, is mounted in valve body 6, and can make axis shifting along the endoporus of valve body 6
It is dynamic；The outer end side of removable valve seat 10 is equipped with valve seat end cap 12, and valve body 6, valve seat end cap 12 and 10 three of removable valve seat exist
It is equipped with sealing ring at cooperation, moves between valve seat 10 and valve seat end cap 12 there are axial gap, ensures to move valve seat 10
Axial movement in valve body 6, and move and one group of disc spring 11 is installed between valve seat 10 and valve body 6；At the beginning of the disc spring 11
Beginning state has certain decrement, and compressing force acts on the pressure on removable valve seat 10 more than fluid media (medium), to protect
The sealing requirements of valve body are demonstrate,proved；10 inner face of removable valve seat keeps line to contact with overhead cam 7 and lower cam 14 always
(referring to Fig. 1)；
The valve rod 8 is multi-diameter shaft, and the diameter at 8 both ends of valve rod is more than with 8 diameter of valve rod of ears connecting plate junction；Valve
Bar 8 is overlapped with the central axis of the upper and lower valve stem sleeve, and upper valve rod set 15 and lower valve rod set 9 are co-axially mounted with valve rod 8, valve rod 8
Upper and lower part be inserted into respectively in upper and lower valve stem sleeve, the upper end of valve rod 8 is connected by flat key and intermittent drive device, lower end according to
End cap carries out axial restraint on the lower；
The intermittent drive device includes a driving mechanism and two indexing mechanisms, and a driving mechanism can drive two
Indexing mechanism acts, and an indexing mechanism connect with the upper end of valve rod 8, the driving movement of butterfly plate 13, another indexing mechanism and
15 top of upper valve rod set connects, and driving the removable axial movement of valve seat 10, (upper valve rod set 15 passes through connecting shaft 28 and drives lower valve rod
Set 9 rotates simultaneously, and upper valve rod set 15 and lower valve rod set 9 drive overhead cam 7 and lower cam 14 to rotate simultaneously respectively, upper and lower cam
Promotion moves valve seat 10 and moves axially), and two indexing mechanisms have interlocking effect, ensure the rotation of butterfly plate 13 and move
The axial movement of valve seat 10 does not interfere.
Asbestos packing and graphite packing are filled between upper valve rod set 15 and lower valve rod set 9 and a set of cups 5, corresponding position
A set of cups can be convenient for carrying out modular dismounting between valve rod 8, upper valve rod set 15, overhead cam 7, lower valve rod set 9, lower cam 14, together
When can adjust between upper valve rod set 15 and overhead cam 7, the axial gap of lower valve rod set 9 and lower cam 14, the valve body 6 of enhancing
With the leakproofness between upper valve rod set 15, lower valve rod set 9；
Further characteristic of the invention is that double ratchet wheels intermittent driving, cam interval may be used in the gap drive device
The modes such as driving, sheave intermittent driving, incomplete tooth intermittent driving.
Below by taking double ratchet wheels intermittent driving as an example, driving and the working method of butterfly valve of the present invention are described in detail.
Gap drive device includes tenon cylinder frame 21, driving outdoor handle 1, limit inner handle 2, upper ratchet 18, bottom ratchet wheel
20, axis pin 25, upper clutch disk 17 and lower clutch disk 16；Outdoor handle 1 and limit inner handle 2 is driven to constitute driving mechanism；On
Ratchet 18, upper pawl 26 and axis pin and the interaction of tenon cylinder frame 21 constitute an indexing mechanism, bottom ratchet wheel 20, lower pawl 27
Another indexing mechanism is constituted with axis pin and the interaction of tenon cylinder frame 21；It is eccentrically mounted on the tenon cylinder frame 21 to have one
Transaxle 19, the upper and lower of axis pin 25 are equipped with pawl 26 and lower pawl 27；It is installed between the upper pawl 26 and lower pawl 27
There is a dextrorotation reduction torsion spring 33 (referring to Figure 10)；The transaxle 19 is equipped with upper hole and lower opening, upper hole and lower opening interlaced arrangement,
One fixation push rod 32 is installed in upper hole, round end push rod 23 and push rod spring 24 are installed in lower opening；Wherein round end push rod 23 by
When lower pawl 27 squeezes, can in an axial direction it be retracted in lower opening；19 upper end of transaxle is interference fitted with switch conversion button 22 (referring to figure
1 and Fig. 6 shows)；The upper ratchet 18 and bottom ratchet wheel 20 by the coaxial assembly constraint of tenon cylinder frame 21, respectively with upper pawl 26
With the unilateral engagement of lower pawl 27 (referring to Fig. 6 and Fig. 7)；The switch conversion button 22 is rotated, fixed push rod 32 and round end are driven
Push rod 23 and push rod spring 24, under the action of torsional spring 33 so that upper pawl 26 and lower pawl 27 are rotated around axis pin 25, in realization
The commutation of pawl 26 and lower pawl 27, and engaged respectively (referring to Fig. 3 and Fig. 8) with upper ratchet 18 and bottom ratchet wheel 20；The upper company
It connects disk 17 and lower clutch disk 16 is connect by bolt with bottom ratchet wheel 20 and upper ratchet 18 respectively, and upper clutch disk 17 is under
Clutch disk 16 is connect with the upper end of valve rod 8 and upper valve rod set 15 (referring to Fig. 1) by flat key respectively；The driving outdoor handle 1
It is fixedly mounted with by pin and tenon cylinder frame 21；The limit inner handle 2 is assemblied in one by axis 30 and sleeve 29 with driving outdoor handle 1
It rises, and is fixed with a compressed spring 31 (referring to Fig. 1 and Fig. 5) between the two, by the elastic force of compressed spring 31 so that in limit
Handle 2 is circumferentially fixed by positioning disk 3, ensures that the keying reliability of butterfly valve, the positioning disk 3 and a set of cups 5 are coaxially mounted to valve body 6
On, and positioning disk 3 is located at the top of a set of cups 5.
Using double ratchet wheels intermittent driving, the characteristic of the unidirectional intermittent movement of ratchet, upper and lower ratchet is made full use of to have by same
One power source drive, but the operative orientation of the two ensures that on the contrary, when driving outdoor handle 1 in this way and is only in work there are one ratchet
Make state, another is in rest state, and when being moved axially to realize removable valve seat 10, butterfly plate 13 does not work, or
When person's butterfly plate 13 is overturn, it is static to move valve seat 10.
It refers to that the axis of the valve rod 8 is same that heretofore described butterfly plate 13, which has single eccentric structure, so-called list bias,
There are a certain distance, the axial offset distances of this distance referred to as butterfly plate 13, to make 13 upper and lower side of butterfly plate no longer at the center of butterfly plate 13
As revolution axle center, single eccentric structure of butterfly valve is just constituted.The single bias of butterfly plate 13, which relies on butterfly plate 13, in the present embodiment welds
Ears connecting plate is connect to realize, ears connecting plate is symmetrical above and below to open up tightening threaded hole, is connect with valve rod 8 by flat key, axial
It is fixed to rely on circumferential holding screw (referring to Fig. 1).
14 structure having the same of overhead cam 7 and lower cam described in butterfly valve of the present invention, and connected by connecting shaft 28, it protects
Demonstrate,prove two cam action synchronisms.The rise angle of overhead cam 7 and lower cam 14 is less than 90 degree, ensures that driving outdoor handle 1 is being opened and closed
When, it can quickly push the axial movement of removable valve seat 10；The remote curve that stops of upper and lower cam is one section of circular arc, and guarantee can
Self-locking and it can ensure to move valve seat 10 displacement when upper valve rod set 15 rotates and surpasses 90 degree after 10 execution of movable valve base
Measure it is constant, avoid action interfere, increase reliability (referring to Fig. 4).
The operation principle of butterfly valve of the present invention is：
Butterfly valve opening process:
When 22 initial position of switch conversion button is located at the position I (as shown in figure 3 by the solid lines) of Fig. 3, the lower tooth of upper pawl 26 and
Upper ratchet 18 engages, as Fig. 6 shows；The upper tooth and bottom ratchet wheel 20 of lower pawl 27 engage, as Fig. 7 shows；Torsional spring 33 has certain at this time
Torsion corner.
Driving outdoor handle 1 rotates clockwise, and tenon cylinder frame 21 is driven to rotate clockwise, the upper ratchet of the driving of upper pawl 26
18 rotate clockwise, and then drive lower clutch disk 16, upper valve rod set 15,9 clockwise motion of lower valve rod set, and drive overhead cam
It 7 and is rotated along needle when lower cam 14, pushes moving valve seat 10 and be moved to the left along 6 axis of valve body, disc spring 11 is compressed so that close
Cover is detached from, and realizes off-load.
At this point, since lower pawl 27 slips on the back of tooth of bottom ratchet wheel 20, bottom ratchet wheel 20 is stationary, so that upper company
It is stationary to connect disk 17, valve rod 8, i.e., in this action process, butterfly plate 13 remains static.
When driving outdoor handle 1, which is rotated to, interferes with positioning disk 3, driving outdoor handle 1 does rotation counterclockwise, returns to initial bit
It sets, and circumferentially fixed locking is carried out with positioning disk 3 by inner handle action 2.During this, tenon cylinder frame 21 does rotation counterclockwise
Transhipment is dynamic, and lower pawl 27 drives bottom ratchet wheel 20 to rotate counterclockwise, and then drives 8 counterclockwise motion of upper clutch disk 17 and valve rod,
Valve rod 8 drives butterfly plate 13 to do counter-clockwise rotary motion, until butterfly plate 13 is rotated by 90 °, butterfly valve is completed to open.
At this point, since upper pawl 26 slips on the back of tooth of upper ratchet 18, upper ratchet 18 is stationary, so that lower company
It is stationary to connect disk 16, upper valve rod set 15, lower valve rod set 9, overhead cam 7 and lower cam 14, i.e., in this action process, moves
Valve seat 10 is in limit on the left position, stationary.
The closing of butterfly valve：
Rotating switch change-over switch 22 arrives the position II (as shown by dotted lines in figure 3) of Fig. 3, the upper tooth and upper ratchet 18 of upper pawl 26
Engagement, as Fig. 8 shows；The lower tooth and bottom ratchet wheel 20 of lower pawl 27 engage, as Fig. 9 shows；Torsional spring 33 releases energy at this time, spine in driving
26 clockwise motion of pawl.
Driving outdoor handle 1 rotates clockwise, and tenon cylinder frame 21 is driven to rotate clockwise, and lower pawl 27 drives bottom ratchet wheel
20 rotate clockwise, and then drive 8 clockwise motion of upper clutch disk 17 and valve rod, and valve rod 8 drives butterfly plate 13 to do rotation clockwise
Transhipment is dynamic, until butterfly plate 13 is rotated by 90 °.
At this point, since upper pawl 26 slips on the back of tooth of upper ratchet 18, upper ratchet 18 is stationary, so that lower company
It is stationary to connect disk 16, upper valve rod set 15, lower valve rod set 9, overhead cam 7 and lower cam 14, i.e., in this action process, moves
Valve seat 10 is in limit on the left position, stationary.
When driving outdoor handle 1, which is rotated to, interferes with positioning disk 3, driving outdoor handle 1 does rotation counterclockwise, returns to initial bit
It sets, and circumferentially fixed locking is carried out with positioning disk 3 by inner handle action 2.During this, tenon cylinder frame 21 does rotation counterclockwise
Transhipment is dynamic, upper 18 rotation counterclockwise of ratchet of the driving of upper pawl 26, and then drives lower clutch disk 16, upper valve rod set 15, lower valve rod 9
It is rotated against needle when covering counterclockwise motion, and driving overhead cam 7 and lower cam 14, disc spring 11 releases energy, and pushes and moves valve seat
10 move right along 6 axis of valve body so that sealing surface compact, disc spring 11 still has at this time acts on removable valve seat more than medium
The elastic force of pressure on 10 realizes that the sealing of butterfly valve is closed.
At this point, since lower pawl 27 slips on the back of tooth of bottom ratchet wheel 20, bottom ratchet wheel 20 is stationary, so that upper company
It is stationary to connect disk 17, valve rod 8, i.e., in this action process, butterfly plate 13 remains static.
Used "upper", "lower", "left", "right" when the installation site of structure or parts described in the present embodiment or direction
Etc. being using the orientation of given attached drawing as foundation, they are convenient just for the sake of statement, for distinguishing the opposite of each component or direction
Position does not represent orientation when the present embodiment butterfly valve uses.
Above-described embodiment is not construed as the limitation to butterfly valve of the present invention, but any specific implementation mode institute based on the present invention
The unsubstantiality of work improves, all should be within the protection domain of the claims in the present invention.
The present invention does not address place and is suitable for the prior art.
Claims (4)
1. a kind of intermittent driving non-abrasion hard-sealing butterfly valve, it is characterised in that the butterfly valve include valve body, removable valve seat, valve rod,
Lower valve rod set, upper valve rod set, butterfly plate and intermittent drive device；Described valve body or so is equipped with the flange perpendicular to valve axis, should
Flange is used for the connection of butterfly valve and pipe flange, and the upper/lower terminal of valve body offers upper valve rod sets of holes and lower valve rod sets of holes, valve
The cavity of body is stepped hole；Upper valve rod set and lower valve rod set are penetrated by upper valve rod sets of holes and lower valve rod sets of holes in valve body respectively,
A set of cups is both provided between upper valve rod set and lower valve rod set and valve body, a set of cups and valve body are bolted, and a set of cups and valve
Adjust pad is installed between body；The same busbar upper and lower ends of upper valve rod set offer flat key slot, and the lower end of upper valve rod set
It is fixed with overhead cam by flat key, upper end is connect with intermittent drive device；The upper end of lower valve rod set offers flat key slot, and passes through
Flat key is fixed with lower cam；Transmission axle is housed between overhead cam and lower cam；
The butterfly plate is single eccentric structure, and butterfly plate side is symmetrical with butterfly plate axis face and is welded with an ears connecting plate, ears connection
Dowel hole is offered on plate, it is symmetrical above and below to be provided with tightening threaded hole on the outer end face that ears connecting plate is parallel to butterfly plate side,
Coordinated with the dowel hole on ears connecting plate by flat key and connect the middle part of butterfly plate and valve rod, it is axial by holding screw and tight
Determine threaded hole cooperation and realizes fixation；
The movable valve holder structure is annular shape, is mounted in valve body, and can be moved as axis along the endoporus of valve body；It is removable
The outer end side of valve seat is equipped with valve seat end cap, and valve body, valve seat end cap and removable valve seat three are equipped with sealing ring at cooperation,
Removable there are axial gaps between valve seat and valve seat end cap, and move and be equipped with one group of disc spring between valve seat and valve body；Institute
The original state for stating disc spring has decrement, and compressing force acts on the pressure on removable valve seat more than fluid media (medium)；It is described
Removable valve seat inner face keeps line to contact with overhead cam and lower cam always；
The valve rod is multi-diameter shaft, and the diameter at valve rod both ends is more than with the stem diameter of ears connecting plate junction；Valve rod with it is upper
Valve stem sleeve and the central axis of lower valve rod set overlap, and upper valve rod set and lower valve rod set are co-axially mounted with valve rod, the upper and lower part of valve rod
Point be inserted into respectively in upper and lower valve stem sleeve, the upper end of valve rod is connected by flat key and intermittent drive device, lower end by bottom end cover into
Row axial restraint；
The intermittent drive device includes a driving mechanism and two indexing mechanisms, and a driving mechanism can drive two intervals
The upper end of mechanism action, an indexing mechanism and valve rod connects, driving butterfly plate movement, another indexing mechanism and upper valve rod set
Top connects, and drives and moves valve seat axial movement, and two indexing mechanisms have interlocking effect, ensure the rotation of butterfly plate with can
The axial movement of movable valve base does not interfere.
2. intermittent driving non-abrasion hard-sealing butterfly valve according to claim 1, it is characterised in that the intermittent drive device
It is had a rest type of drive using double ratchet wheels intermittent driving, cam intermittent driving, sheave intermittent driving or incomplete between cog.
3. intermittent driving non-abrasion hard-sealing butterfly valve according to claim 2, it is characterised in that the intermittent drive device
Including tenon cylinder frame, driving outdoor handle, limit inner handle, upper ratchet, bottom ratchet wheel, axis pin, upper clutch disk and lower connection circle
Disk；It is eccentrically mounted on the tenon cylinder frame to have a transaxle, the upper and lower of axis pin that pawl and lower pawl are installed；The upper spine
One dextrorotation reduction torsion spring is installed between pawl and lower pawl；The transaxle is equipped with upper hole and lower opening, and upper hole and lower opening are interlocked
It arranges, a fixation push rod is installed in upper hole, round end push rod and push rod spring are installed in lower opening；Transaxle upper end turns with switch
Change button interference fit；The upper ratchet and bottom ratchet wheel by the coaxial assembly constraint of tenon cylinder frame, respectively with upper pawl and under
The unilateral engagement of pawl；The upper clutch disk and lower clutch disk are connect by bolt with bottom ratchet wheel and upper ratchet respectively, and
Upper clutch disk and lower clutch disk are connect by flat key with the upper end of valve rod and upper valve rod set respectively；The driving outdoor handle is logical
Pin is crossed to be fixedly mounted with tenon cylinder frame；The limit inner handle is assembled together by axis and sleeve with driving outdoor handle, and the two
Between be fixed with a compressed spring, by the elastic force of compressed spring so that limit inner handle it is circumferentially fixed by positioning disk, it is described fixed
Position disk and a set of cups are coaxially mounted on valve body, and positioning disk is located at the top of a set of cups.
4. according to any intermittent driving non-abrasion hard-sealing butterfly valves of claim 1-3, it is characterised in that upper valve rod set and
Asbestos packing and graphite packing are filled between lower valve rod set and a set of cups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710185951.4A CN106678378B (en) | 2017-03-27 | 2017-03-27 | A kind of intermittent driving non-abrasion hard-sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710185951.4A CN106678378B (en) | 2017-03-27 | 2017-03-27 | A kind of intermittent driving non-abrasion hard-sealing butterfly valve |
Publications (2)
| Publication Number | Publication Date |
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| CN106678378A CN106678378A (en) | 2017-05-17 |
| CN106678378B true CN106678378B (en) | 2018-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710185951.4A Active CN106678378B (en) | 2017-03-27 | 2017-03-27 | A kind of intermittent driving non-abrasion hard-sealing butterfly valve |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109854760B (en) * | 2019-04-03 | 2023-12-15 | 成都五环特种设备制造有限公司 | Guide balance butterfly valve |
| CN112628413A (en) * | 2020-12-01 | 2021-04-09 | 永嘉中特阀门有限公司 | Dustproof anti-lock high temperature butterfly valve |
| CN113932020B (en) * | 2021-10-22 | 2023-01-24 | 宁波一机阀门制造有限公司 | Butterfly valve with clearance self-compensating function |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57110869A (en) * | 1980-12-26 | 1982-07-09 | Okano Valve Seizo Kk | Butterfly valve with metal valve seat |
| CN2280177Y (en) * | 1996-11-13 | 1998-04-29 | 魏德哲 | Butterfly valve with moveable valve plate |
| CN201162834Y (en) * | 2007-11-23 | 2008-12-10 | 河北工业大学 | Non-abrasion hard-sealing butterfly valve |
-
2017
- 2017-03-27 CN CN201710185951.4A patent/CN106678378B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57110869A (en) * | 1980-12-26 | 1982-07-09 | Okano Valve Seizo Kk | Butterfly valve with metal valve seat |
| CN2280177Y (en) * | 1996-11-13 | 1998-04-29 | 魏德哲 | Butterfly valve with moveable valve plate |
| CN201162834Y (en) * | 2007-11-23 | 2008-12-10 | 河北工业大学 | Non-abrasion hard-sealing butterfly valve |
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| CN106678378A (en) | 2017-05-17 |
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