CN102011870A - High-performance butt clamping butterfly valve - Google Patents
High-performance butt clamping butterfly valve Download PDFInfo
- Publication number
- CN102011870A CN102011870A CN2010105991799A CN201010599179A CN102011870A CN 102011870 A CN102011870 A CN 102011870A CN 2010105991799 A CN2010105991799 A CN 2010105991799A CN 201010599179 A CN201010599179 A CN 201010599179A CN 102011870 A CN102011870 A CN 102011870A
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- valve
- butterfly
- folder
- eccentric
- performance
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Abstract
The invention provides a high-performance butt clamping butterfly valve. An elastic valve seat of the butterfly valve is an independent plastic or rubber, and the plastic or the rubber is pressed on a valve body by a sealing pressing ring. Two sides of the elastic valve seat are provided with a groove respectively, and displacement in the same direction as medium pressure is generated under the action of a medium. The high-performance butt clamping butterfly valve can bear the pressure (within 1.25 times nominal pressure) applied by the medium from any side, and the purpose of preventing the medium from refluxing can be fulfilled only by arranging the high-performance butt clamping butterfly valve on a pipeline without arranging a check valve or other bidirectional pressure valves.
Description
Technical field
The present invention relates to a kind of butterfly valve structure, be specifically related to medium and enter high-performance that this valve all can be blocked and reach the zero leakage requirement to the folder eccentric-butterfly-valve from any end.
Background technique
Common to the folder butterfly valve in traditional manufacturing because manufacturing process and structural reason, always entering medium on butterfly valve butterfly plate closing direction could seal fully, and when entering medium in the opposite direction, increasing along with pressure medium, reason owing to the butterfly valve eccentric structure, can cause butterfly valve butterfly plate and valve rod to be subjected to one and make the thrust of valve on opening direction, the used driving force direction of this thrust and throttle down is opposite, that is to say to allow the pretension specific pressure of valve reduce that leaking will appear in butterfly valve after the pretension specific pressure is reduced to minimum seal pressure.
Summary of the invention
Technical problem to be solved by this invention is to change existing deficiency to the folder butterfly valve structure, and the high-performance that provides a kind of compensation elastic seat sealing is to the folder eccentric-butterfly-valve.
The present invention solves the problems of the technologies described above by the following technical programs: remove the directly structure on valve body of valve body sealing surface, do a compensation elastic seat in addition, this elastic seat positive and negative all processes a groove, radially radially thickness is thin slightly in addition with internal ratio for groove, and the elastic seat sealing surface is tapered; The butterfly plate sealing surface is rounded.When butterfly plate close and medium when closing the butterfly plate pressuring direction, this elastic seat is subjected to butterfly plate pressure and medium thrust can produce microdisplacement backward, butterfly sealing when butterfly plate is rotated further the seal pressure that makes on two sealing pairs greater than minimum seal pressure; When the pressure medium fluctuation occurring, the elastic seat of this structure has certain rebound elasticity can make the dish valve be in sealing state all the time.And when entering medium in the opposite direction, increasing along with pressure medium, reason owing to the butterfly valve eccentric structure, can cause butterfly valve butterfly plate and valve rod to be subjected to one and make the thrust of valve on opening direction, the used driving force direction of this thrust and throttle down is opposite, that is to say to allow the pretension specific pressure of valve reduce, but simultaneously medium promotes elastic seat being pressed on the butterfly plate tightly, makes the pretension specific pressure reach seal request greater than minimum seal pressure all the time.This high-performance is achieved in that handwheel input operation power from the gear to the folder eccentric-butterfly-valve, worm gear links to each other with valve rod by key, valve rod passes valve body and is fixed on the butterfly plate by straight pin, process an arc on the butterfly plate and form a sealing pair, the sealed trim ring of elastic seat is pressed in socket head screw and becomes another sealing pair on the valve body; There are upper bearing (metal) and lower bearing in the valve rod top and the bottom, sealing gasket quilt stifle down is pressed on the valve body lower shaft hole with socket head screw, support one end is fixed on the valve body upper shaft hole flange with stud, elastic washer, nut, the other end links to each other with gear with stud, elastic washer, nut, and stud, hexagon nut compress Gland and filler.
The feature that the present invention has utilized fluid itself to be had has cleverly been utilized the principle of fluid pressure difference, thereby has realized utilizing the thrust of fluid or the resilience of elastic seat itself that elastic seat is pressed to the effect that the butterfly plate sealing pair is realized two-way equal energy sealing.To the folder eccentric-butterfly-valve, advantage of the present invention and effect are with respect to common:
(1) a high-performance off-centre need only be installed on the pipeline and needn't increase the purpose that safety check or other two-way pressure valve just can reach the prevention medium back flow in addition again the folder butterfly valve, save cost and improve Safety performance, can bear medium from any side applied pressure (in 1.25 times of nominal pressure);
(2) can reduce to force oppositely to seal valve rod and the drive unit that is increased, economical with materials reduces cost;
(3) elastic seat adopts soft material, belongs to soft seal, can be issued to sealability at less closing torque;
(4) precision of the self-locking requirement of drive unit and driving dimensional chain can reduce;
(5) change elastic seat conveniently;
(6) can whole valve body be scrapped because elastic seat damages;
(7) the elastic seat sealing surface is taper, so it is good to play interchangeability.
Description of drawings
Fig. 1 is a plan view of the present invention.Fig. 2 is a left-hand sectional view of the present invention.
Among the figure:
1 time stifle 2 sealing gaskets 3 socket head screw
4 valve bodies, 5 lower bearings, 6 valve rods
7 sealing trim rings, 8 elastic seats, 9 butterfly plates
10 straight pins, 11 socket head screws, 12 upper bearing (metal)s
13 fillers, 14 stud, 15 hexagon nuts
16 elastic washers, 17 stud, 18 hexagon nuts
19 elastic washers, 20 supports, 21 Glands
22 stud, 23 hexagon nuts, 24 gears
25 keys
Embodiment
The present invention is the improvement of folder eccentric-butterfly-valve structural imperfection being carried out according to existing, increased elastic seat according to the prerequisite requirement of sealing, promoted the elastic seat generation by fluid and allow greater than the mode of minimum seal pressure and can seal on the both direction of butterfly valve.
Accompanying drawing 2 is left sectional views of the present invention, as shown in the figure, the moment of input gear 24 (also can be that other is as Electric actuator, Hydraulic actuator or handle etc.) drives valve rod 6 by key 25 and rotates, valve rod moment drives butterfly plate 9 by straight pin 10 and rotates, the sealing pair of butterfly plate 9 makes valve closing near elastic seat 8 gradually when turning clockwise, and the sealing pair of butterfly plate 9 makes valve opening away from elastic seat 8 gradually when being rotated counterclockwise.Be in the butterfly valve (seeing accompanying drawing 2) under the buttoned-up status, when medium enters by valve body 4 inner chambers from the left side as figure, eccentric thrust is to help on the valve seal direction on the butterfly plate 9 that pressure medium produces, can close tight more this moment under the situation that each component strength and stiffness allows more, the seal pressure of the high more generation of pressure medium is big more, forms more reliable sealing; When medium when the right side as figure enters the inner chamber of valve body 4, the factor that can reduce seal pressure has: valve rod 6, butterfly plate 9 have trace to left dislocation (by the rigidity of himself and the size of the quality of fit decision displacement of each component); Eccentric thrust is on the direction of valve opening on the butterfly plate 9 that pressure medium produces.In order to remedy the seal pressure of reduction, elastic seat 8 is pushed the sealing pair of butterfly plate 9 under the effect of pressure medium, and formed like this seal pressure can seal greater than minimum seal pressure all the time.
Claims (6)
1. a high-performance is to the folder eccentric-butterfly-valve, it is characterized in that: gear (24) links to each other with valve rod (6) by key (25), valve rod (6) passes valve body (4) and is fixed on the butterfly plate (9) by straight pin (10), process a circular arc on the butterfly plate (9) and form a sealing pair, the sealed trim ring of elastic seat (8) (7) is pressed on the valve body (4) with socket head screw (11) and becomes another sealing pair, the upper bearing (metal) (12) of valve rod (6) top and the bottom and the friction factor of lower bearing (5) are extremely low, can effectively reduce the open and close torque of valve, sealing gasket (2) is descended stifle (1) to be pressed on valve body (4) lower shaft hole with socket head screw (3), support (20) one ends stud (14), elastic washer (16), hexagon nut (15) is fixed on the valve body upper shaft hole flange, the other end stud (17), elastic washer (19), hexagon nut (18) links to each other with gear (24); Stud (22), hexagon nut (23) compress Gland (21) and filler (13).
2. high-performance according to claim 1 is to the folder eccentric-butterfly-valve, and it is characterized in that: the material of elastic seat (8) can be selected plastics or rubber for use.
3. high-performance according to claim 1 is characterized in that the folder eccentric-butterfly-valve: valve body (4) also can be connected folder for lug type with the pipeline Placement.
4. high-performance according to claim 1 is characterized in that the folder eccentric-butterfly-valve: gear (24) is a kind of mode of operation wherein, also can with handle, electronic, surge, alternate manner driving such as pneumatic.
5. high-performance according to claim 1 is to the folder eccentric-butterfly-valve, and it is characterized in that: valve rod (6) also can be connected without straight pin (10) by key with butterfly plate (9).
6. high-performance according to claim 1 is to the folder eccentric-butterfly-valve, it is characterized in that: elastic seat (8) positive and negative all processes a groove, groove radially with interior thickness less than thickness beyond radially, elastic seat (8) sealing surface is tapered, butterfly plate (9) sealing surface is rounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105991799A CN102011870A (en) | 2010-12-16 | 2010-12-16 | High-performance butt clamping butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105991799A CN102011870A (en) | 2010-12-16 | 2010-12-16 | High-performance butt clamping butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102011870A true CN102011870A (en) | 2011-04-13 |
Family
ID=43842149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105991799A Pending CN102011870A (en) | 2010-12-16 | 2010-12-16 | High-performance butt clamping butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102011870A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954231A (en) * | 2011-08-25 | 2013-03-06 | 法雷奥电机控制系统公司 | Fluid circulation valve having an axial return spring |
| CN105465382A (en) * | 2016-01-19 | 2016-04-06 | 湖州优创科技有限公司 | Butterfly bamper for lifter pump station |
| CN105987184A (en) * | 2016-06-24 | 2016-10-05 | 江苏中昊船用阀门制造有限公司 | Elastic two-way sealing three-eccentric-center butterfly valve |
| CN106369177A (en) * | 2016-12-06 | 2017-02-01 | 无锡优耐特净化装备有限公司 | Eccentric pneumatic butterfly valve |
-
2010
- 2010-12-16 CN CN2010105991799A patent/CN102011870A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954231A (en) * | 2011-08-25 | 2013-03-06 | 法雷奥电机控制系统公司 | Fluid circulation valve having an axial return spring |
| CN102954231B (en) * | 2011-08-25 | 2017-03-01 | 法雷奥电机控制系统公司 | There is the fluid valve of axial back-moving spring |
| CN105465382A (en) * | 2016-01-19 | 2016-04-06 | 湖州优创科技有限公司 | Butterfly bamper for lifter pump station |
| CN105987184A (en) * | 2016-06-24 | 2016-10-05 | 江苏中昊船用阀门制造有限公司 | Elastic two-way sealing three-eccentric-center butterfly valve |
| CN106369177A (en) * | 2016-12-06 | 2017-02-01 | 无锡优耐特净化装备有限公司 | Eccentric pneumatic butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110413 |