CN202140581U - Butterfly valve realizing active sealing - Google Patents
Butterfly valve realizing active sealing Download PDFInfo
- Publication number
- CN202140581U CN202140581U CN201120278966U CN201120278966U CN202140581U CN 202140581 U CN202140581 U CN 202140581U CN 201120278966 U CN201120278966 U CN 201120278966U CN 201120278966 U CN201120278966 U CN 201120278966U CN 202140581 U CN202140581 U CN 202140581U
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- endless belt
- seal ring
- valve
- belt formula
- valve body
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Abstract
The utility model provides a butterfly valve realizing active sealing, belonging to a valve. The technical scheme is as follows: a prominent round table is arranged on a valve body along the radial direction, a control hole is arranged on the prominent round table, a platform is arranged in the control hole, and active sealing devices are mounted in the radial control hole and on the aperture of the valve body. In the utility model, the valve body and a valve plate are symmetrically arranged by taking a valve rod as the center, and a gap is reserved between the valve body and the valve plate, therefore, the machining precision and the machining difficulty are greatly reduced, and further the machining cost is substantially reduced; the butterfly valve disclosed by the utility model adopts the additional active sealing devices as active sealing, so the structure is simple and the sealing is safe and reliable; and the sealing devices can be operated by adopting various power forms.
Description
Technical field
The utility model belongs to valve, relates to a kind of butterfly valve of active sealing.
Background technique
Butterfly valve will reach sealing because valve plate has certain thickness, and often designing valve body and valve plate has certain off-centre; At present, commonly used classifies as if pressing off-centre, promptly divides with the position of valve rod and valve plate; Can be divided into four kinds: 1, the opposed butterfly valve in center, this kind valve valve plate are the center symmetric arrangement with the valve rod.Its valve seat is an elastic seat, and valve seat can be out of shape, and this material requirements to valve seat is than higher, and the pressure that valve bears is little, and cost is high.2, single eccentric-butterfly-valve, this kind valve valve rod and valve plate have the off-centre of a direction.Single eccentric-butterfly-valve is generally the butterfly valve of larger caliber, and valve rod mostly adopts two joint structures.3, double eccentric butterfly valve, this kind valve valve rod and valve plate have the off-centre of both direction, and the sealing surface of valve is positive frustoconic shape.4, three eccentric metal seal butterfly valve, typical three eccentric metal seal butterfly valve, except that valve rod and valve plate have two off-centre, the sealing surface of valve plate and valve seat is oblique frustoconic shape (this is the 3rd off-centre of what is called three off-centre).The eccentric number of valve plate increases, and the thickness of valve plate is also thickeied, and then the flow through resistance of three eccentric butterfly valve of fluid increases; Along with the increase of the eccentric number of butterfly valve, the difficulty of machining also increases thereupon, and directly performance is exactly that processing cost increases.
Summary of the invention
The purpose of the utility model just provides a kind of valve body and valve plate is the center symmetric arrangement with the valve rod, leaves the gap between valve body and the valve plate, the butterfly valve of a kind of active sealing that its seal arrangement increases in addition.
The solution that realizes the utility model purpose is to comprise drive unit 1; Valve body 2; The round platform that a protrusion radially is set 17 of valve plate 4, particularly valve body 2 has control hole on the round platform 17 of protrusion; A platform 3 is set in the control hole, the initiative seal arrangement is installed in control hole radially and on the aperture of valve body 2.
The initiative seal arrangement is on valve body 2, to be provided with circular groove with the circumference corresponding part of valve plate 4, and endless belt formula seal ring 6 is fixed on the endless belt formula seal ring skeleton 5, and endless belt formula seal ring skeleton 5 and endless belt formula seal ring 6 are installed in the circular groove; The shape of endless belt formula seal ring skeleton 5 and endless belt formula seal ring 6 is that annular has breach; The termination of endless belt formula seal ring skeleton 5 is provided with bearing pin otic placode 16, and bearing pin otic placode 16 is hinged through bearing pin a 9 through 8, two articulated linkage of bearing pin b11 articulated linkage 8 and spring wedge 10; Spring 7 one crowns are on spring wedge 10; The other end withstands on the platform 3 in the control hole of valve body 2, regulates nut 12 and is enclosed within on the spring wedge 10, regulates nut 12 and is connected with control hole on the valve body 2 through screw thread; 15 1 of power levers are at the center of spring wedge 7, and the other end is outside regulating nut 12.
The cross section of the circular groove on the valve body 2 is an antiparallelogram, and the oral area of groove is narrow, and the root of groove is wide.One skew back limit of the antiparallelogram of the cross section of circular groove and valve body 2 one, the opposite side hypotenuse is the front-end face of gland 14, gland 14 is fixed on the valve body 2 through screw 13.The cross section of endless belt formula seal ring 6 is isosceles trapezoids, and the cross section of endless belt formula seal ring skeleton 5 is grooves of isosceles trapezoid.Endless belt formula seal ring 6 is than endless belt formula seal ring skeleton 5 length at the annular opening place for endless belt formula seal ring skeleton 5 and endless belt formula seal ring 6, and promptly endless belt formula seal ring 6 girths are longer than endless belt formula seal ring skeleton 5 girths.
Regulating the screw thread that nut 12 is connected with control hole on the valve body 2, is the screw thread with seal action.
The utility model has the advantages that 1, because valve body and valve plate are the center symmetric arrangement with the valve rod, leave the gap between valve body and the valve plate, make machining accuracy and difficulty of processing reduce greatly; Thereby cut down finished cost significantly; 2, seal arrangement is a kind of active sealing that increases in addition, and simple in structure, sealingly secure is reliable; The operation of seal arrangement can be adopted multiple power form.
Description of drawings
Fig. 1 is the structural representation of the utility model opening state.
Fig. 2 is the plan view of Fig. 1.
Fig. 3 is the left sectional view of Fig. 1.
Fig. 4 is the A enlarged view of Fig. 1.
Fig. 5 is the B enlarged view of Fig. 3.
Fig. 6 is the structural representation of the utility model closed condition.
Fig. 7 is the right sectional view of Fig. 6.
Fig. 8 is the C enlarged view of Fig. 6.
Fig. 9 is the D enlarged view of Fig. 7.
Figure 10 is the schematic diagram that the utility model is closed and opened.
Embodiment
Butterfly valve has valve body 2, drive unit 1, and middle valve rod, valve plate 4 at the round platform that a protrusion radially is set 17 of valve body 2, has control hole on the round platform 17 of protrusion, and a platform 3 is set in the control hole.Circumference corresponding part with valve plate 4 on valve body 2 is provided with circular groove, and the cross section of circular groove is an antiparallelogram, and the oral area of groove is narrow, and the root of groove is wide.Endless belt formula seal ring 6 is fixed on the endless belt formula seal ring skeleton 5; Endless belt formula seal ring skeleton 5 and endless belt formula seal ring 6 are installed in the circular groove; The shape of endless belt formula seal ring skeleton 5 and endless belt formula seal ring 6 is that annular has breach; The cross section of endless belt formula seal ring 6 is isosceles trapezoids, and the cross section of endless belt formula seal ring skeleton 5 also is the groove of isosceles trapezoid.Endless belt formula seal ring 6 is than endless belt formula seal ring skeleton 5 length at the annular opening place for endless belt formula seal ring skeleton 5 and endless belt formula seal ring 6, and promptly endless belt formula seal ring 6 girths are longer than endless belt formula seal ring skeleton 5 girths.The termination of endless belt formula seal ring skeleton 5 is provided with bearing pin otic placode 16; Two bearing pin otic placode 16 of endless belt formula seal ring skeleton 5 is hinged through bearing pin a 9 through 8, two articulated linkage of bearing pin b11 articulated linkage 8 and spring wedge 10, and spring 7 one crowns are on spring wedge 10; The other end withstands on the platform 3 in the control hole of valve body 2; Regulate nut 12 and be enclosed within on the spring wedge 10, regulate nut 12 and be connected with control hole on the valve body 2 through screw thread, and the employing sealing thread; 15 1 of power levers are at the center of spring wedge 7, and the other end is outside regulating nut 12.Install for ease, a skew back limit of the antiparallelogram of the cross section of circular groove and valve body 2 one, the opposite side hypotenuse is the front-end face of gland 14, gland 14 is fixed on the valve body 2 through screw 13.
Stretch out the dynamic source of regulating outside the nut 12 of power levers 15 links, come 15 motions of propulsion power bar like oil hydraulic cylinder, cylinder, electromagnet or the like.
Because the existence of valve plate thickness, valve body 2 and valve plate 4 are the center symmetric arrangement with the valve rod, and the sufficient and necessary conditions that accurately put in place freely of valve plate 4 are exactly must gapped existence between valve body and the valve plate again, and then valve body 2 diameter D are inevitable greater than the valve plate diameter d.
Know by formula: circumference L=π D
This moment valve body 2 the O-ring perimeter L
1=π D
1
This moment valve plate O-ring girth l
1=π d
1
The size in gap M=(D-d)/2 gap is relevant with the thickness of valve plate 4.
L
1-l
1＝π(D
1-d
1)
Gap M=(L
1-l
1)/2 π is when diameter and one timing of valve plate 4 thickness, and the requirement of gap length mainly is to satisfy valve plate accurately to put in place freely.
Key of the present invention is: see Figure 10
Under the valve plate opening state, bearing pin a9 is in the A91 position, and bearing pin b11 is in the B111 position, bearing pin a9 bearing pin b11 discrepancy in elevation H1;
Under the valve plate closed condition, bearing pin a9 is in the A92 position, and bearing pin b11 is in the B112 position, bearing pin 9 bearing pins 11 discrepancy in elevation H2;
Then bearing pin a 9 moves to A92 from the A91 position, forms to the difference H3 away from axis direction, and the numerical value of H3 is exactly the best effort deformation values of spring.
Then bearing pin b11 moves to B112 from the B111 position, forms the difference H4 to axis direction, and the numerical value of H4 reaches the gap purpose between full remuneration valve body and the valve plate more than or equal to M, thereby reaches the purpose that realizes sealing.
So H4 >=M=(L1-l1)/2 π
Gap M=(L1-l1)/2 π is when diameter and one timing of valve plate thickness, and the requirement of gap length mainly is to satisfy valve plate accurately to put in place freely.
When opening butterfly valve, give power lever 15 external force actions, through spring wedge 10 pressure springs 7; Spring wedge 10 drives articulated linkage 8 motions to the butterfly valve axe movement, and articulated linkage 8 makes bearing pin otic placode 16 move; Drive endless belt formula seal ring skeleton 5 and endless belt formula seal ring 6 to away from the butterfly valve axe movement promptly to both sides simultaneously to the root motion of the circular groove of valve body 2; Thereby make between valve plate 4 and the endless belt formula seal ring 6 gappedly, device of rotation driving 1 has just been opened valve plate 4.When closing butterfly valve, device of rotation driving 1 makes valve plate 4 be in closed condition; With the cancellation of the external force of power lever 15, under the elastic force effect of spring 7, spring wedge 10 is to away from the butterfly valve axe movement; Drive articulated linkage 8 motions, articulated linkage 8 makes 16 motions of bearing pin otic placode, drive endless belt formula seal ring skeleton 5 and endless belt formula seal ring 6 to together simultaneously to the butterfly valve axe movement promptly to the oral area motion of the circular groove of valve body 2; Hold valve plate 4 tightly, thereby reach sealing.
Claims (7)
1. butterfly valve of sealing initiatively; Comprise drive unit (1), valve body (2), valve plate (4); The round platform that a protrusion radially is set (17) that it is characterized in that valve body (2); Have control hole on the round platform (17) of protrusion, a platform (3) is set in the control hole, the initiative seal arrangement is installed in control hole radially and on the aperture of valve body (2).
2. the butterfly valve of active sealing according to claim 1; It is characterized in that described initiative seal arrangement is on valve body (2) and the circumference corresponding part of valve plate (4) is provided with circular groove, endless belt formula seal ring (6) is fixed on the endless belt formula seal ring skeleton (5), and endless belt formula seal ring skeleton (5) and endless belt formula seal ring (6) are installed in the circular groove; The shape of endless belt formula seal ring skeleton (5) and endless belt formula seal ring (6) is that annular has breach; The termination of endless belt formula seal ring skeleton (5) is provided with bearing pin otic placode (16), and bearing pin otic placode (16) is through bearing pin b (11) articulated linkage (8), and two articulated linkage (8) are hinged through bearing pin a (9) with spring wedge (10); Spring (7) one crowns are on spring wedge (10); The other end withstands on the platform (3) in the control hole of valve body (2), regulates nut (12) and is enclosed within on the spring wedge (10), regulates nut (12) and is connected with control hole on the valve body (2) through screw thread; (15) one of power levers are at the center of spring wedge (7), and the other end is outside regulating nut (12).
3. the butterfly valve of active sealing according to claim 2 is characterized in that the cross section of the circular groove on the described valve body (2) is an antiparallelogram, and the oral area of groove is narrow, and the root of groove is wide.
4. according to the butterfly valve of claim 2 or 3 described actives sealing; A skew back limit and valve body (2) one of antiparallelogram that it is characterized in that the cross section of described circular groove; The opposite side hypotenuse is the front-end face of gland (14), and gland (14) is fixed on the valve body (2) through screw (13).
5. the butterfly valve of active sealing according to claim 2 is characterized in that the cross section of described endless belt formula seal ring (6) is an isosceles trapezoid, and the cross section of endless belt formula seal ring skeleton (5) is the groove of isosceles trapezoid.
6. according to the butterfly valve of claim 2 or 5 described actives sealing; It is characterized in that described endless belt formula seal ring skeleton (5) and endless belt formula seal ring (6) at the annular opening place endless belt formula seal ring (6) longer than endless belt formula seal ring skeleton (5), promptly endless belt formula seal ring (6) girth is longer than endless belt formula seal ring skeleton (5) girth.
7. the butterfly valve of active according to claim 2 sealing, what it is characterized in that described adjusting nut (12) is connected with control hole on the valve body (2) is threaded, and is sealing thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120278966U CN202140581U (en) | 2011-07-24 | 2011-07-24 | Butterfly valve realizing active sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120278966U CN202140581U (en) | 2011-07-24 | 2011-07-24 | Butterfly valve realizing active sealing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202140581U true CN202140581U (en) | 2012-02-08 |
Family
ID=45551639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120278966U Expired - Fee Related CN202140581U (en) | 2011-07-24 | 2011-07-24 | Butterfly valve realizing active sealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202140581U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287539A (en) * | 2011-07-24 | 2011-12-21 | 李厚志 | Actively-sealed butterfly valve |
-
2011
- 2011-07-24 CN CN201120278966U patent/CN202140581U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287539A (en) * | 2011-07-24 | 2011-12-21 | 李厚志 | Actively-sealed butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120208 Termination date: 20140724 |
|
| EXPY | Termination of patent right or utility model |