CN202946700U - Two-way sealing butterfly valve - Google Patents
Two-way sealing butterfly valve Download PDFInfo
- Publication number
- CN202946700U CN202946700U CN 201220715893 CN201220715893U CN202946700U CN 202946700 U CN202946700 U CN 202946700U CN 201220715893 CN201220715893 CN 201220715893 CN 201220715893 U CN201220715893 U CN 201220715893U CN 202946700 U CN202946700 U CN 202946700U
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- valve
- butterfly plate
- seat
- butterfly
- valve body
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- Expired - Fee Related
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Abstract
The utility model discloses a two-way sealing butterfly valve which comprises a valve body, an upper valve rod and a lower valve rod which are arranged in the valve body, valve bases arranged in the valve body, a butterfly plate arranged in the valve body, and an end cover, wherein one end of the upper valve rod is arranged outside the valve body, the other end of the upper valve rod is connected with a butterfly plate in the valve body, and one end of the lower valve rod is fixed and matched with the end cover. The two-way sealing butterfly valve is characterized in that the other end of the lower valve rod is connected and fixed with the butterfly plate through a key, the valve bases are aslant arranged on the upper side and the lower side in the valve body, the end surface of the upper periphery of each valve base is a valve base sealing surface, the outer end surface of the butterfly plate is in clearance fit with the inclined valve base sealing surfaces, the ring surface of the outer periphery of the butterfly plate is processed into an annular groove structure, and a sealing element is arranged in the annular groove structure and is in line contact with the inclined valve bases. The two-way sealing butterfly valve has the advantages of less parts, simple assembly process, and time and material saving, is capable of reliably realizing two-way sealing zero leakage, and is lower in opening and closing torques and long in service life.
Description
Technical field
The utility model relates to a kind of butterfly valve, particularly bidirectional sealed butterfly valve.
Background technique
Common seal butterfly valve is by valve body, butterfly plate, and pressure ring, seal ring, valve rod, a plurality of parts such as bolt form, and this structure makes butterfly valve thickness increase, and causes the butterfly plate flow resistance to increase, and the negotiability of valve is reduced, and causes unnecessary energy waste.
Common butterfly valve seal circle is by pressure ring and being bolted on butterfly plate.Valve seat is positioned on valve body, and the cross section of valve seat is ladder type, and the maximum disadvantage of this knot body is: when medium flowed into from the valve body suction side, under the effect of medium, seal ring was adjacent to valve seat, realized sealing; When the medium reverse flow, the medium active force makes seal ring be tending towards lifting off a seat, and does not produce the required necessary specific pressure of sealing between seal ring and valve seat, produces between sealing pair and leaks, and therefore, common seal butterfly valve can only be suitable for the operating mode of one-way sealing.
The model utility content
The purpose of this utility model is that a kind of long service life, simple in structure, the bidirectional sealed butterfly valve that can realize the zero leakage two way sealed are provided in order to solve above-mentioned the deficiencies in the prior art.
to achieve these goals, the bidirectional sealed butterfly valve that the utility model is designed, comprise valve body, upper in valve body, lower valve rod, be positioned at the valve seat of valve body, be installed on butterfly plate and end cap in valve body, upper valve rod one end is placed in outside valve body, the butterfly plate of the other end in valve body connects, one end and the end cap of lower valve rod are fixed, it is characterized in that: the described lower valve rod the other end is connected and fixed by key and butterfly plate, the tilting both sides, the interior up and down of valve body that are arranged on of described valve seat, on valve seat, peripheral end face is sealing surface of seat, butterfly plate exterior edge face and tilting sealing surface of seat Spielpassung, the machine shaping of described butterfly plate periphery ring face is the ring shaped slot structure of indent, Sealing is installed in ring channel structures, being line between Sealing and tilting valve seat contacts.
Preferably, described upper valve rod is connected with the key that is connected to of butterfly plate, and is positioned at same gyration center with lower valve rod.
Preferably, described sealing surface of seat is sphere, corresponding butterfly plate exterior edge face is sphere, the angle of described valve channel center line and the center line of sealing surface of seat is identical with the angle of described butterfly plate sphere centre line and valve channel center line, and the sphere centre point of described sealing surface of seat is positioned at same point with the central point of butterfly plate sphere.
Preferably, described Sealing is the O RunddichtringO.
Preferably, the cross section of described ring shaped slot is rectangle.
Beneficial effect is as follows: the inner chamber of described valve body is with tilting valve seat, the angle of valve channel center line and sealing surface of seat center line is A, common butterfly valve seat sealing surface center line and valve channel central vertical, sealing surface of seat is generally the conical surface, the medium power of forward makes the butterfly plate seal ring be adjacent to valve seat, and valve does not produce leakage.When the reverse media masterpiece is used for the butterfly plate seal ring, under the effect of medium power, seal ring is lifted off a seat, produce the gap between seal ring and valve seat, cause valve leak.the oblique installing type valve seat can make up the deficiency of common butterfly valve, because oblique installing type sealing surface of seat center line and valve channel center line have included angle A, make valve seat be positioned at valve channel and import and export both sides, because the gap between the sphere in the Spherical Seals face of valve seat and the butterfly plate outside remains fixed value, what valve seal relied on is that medium promotion O type circle is adjacent to valve seat, when so no matter medium flows forward or backwards, the stressing conditions of butterfly plate both sides is approximate identical, can not produce because of the difference of media flow direction different sealing effects when medium during from any side inflow, under the effect of medium power, O type circle produces distortion, be adjacent to the plane of butterfly plate ring shaped slot one side, the bottom surface, and sealing surface of seat, fill the gap between butterfly plate and valve seat, make and do not produce leakage between the valve seal pair, sealing configuration and the sealing principle of importing and exporting both sides because of valve are identical, therefore the valve forward is with oppositely sealing effect is identical.
The sealing surface of valve seat is sphere, and the valve channel center that is centered close to of ball and the point of intersection of valve rod rotating center; The outside of described butterfly plate is sphere, the center of ball and the ball center of sealing surface of seat are in same point, butterfly plate outside processing ring shaped slot, the cross section of ring shaped slot is rectangle, the kernel of section line of ring shaped slot and the angle of valve channel center line are B, and A=B, the centre of sphere of the kernel of section line of ring shaped slot and the intersection point of rotation centerline and valve seat Spherical Seals face is positioned on same point; Described O type circle is arranged in ring shaped slot on butterfly plate as Sealing, with butterfly plate be Spielpassung; Described upper lower valve rod is arranged in valve body, adopts key to be connected with butterfly plate, and upper lower valve rod is positioned at same gyration center.
The bidirectional sealed butterfly valve that the utility model obtains, valve components quantity is few, and assembly technology is simple, saves man-hour and material; Butterfly plate is designed to tilting board-like, and the characteristics of this structure are, the stressed approximate equilibrium in butterfly plate both sides, and fluid resistance is little, and negotiability is large; Due to butterfly plate seal ring meeting automatic paste tightening valve seat under the effect of medium, valve can reliably be realized two way sealed " zero " leakage; Because sealing surface of seat is inner ball surface, contact the lower and long service life of valve opening and closing moment of torsion between butterfly plate seal ring and valve seat for " line ".
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the sectional view of B-B in Fig. 1;
Fig. 3 is that in Fig. 2, the part at D place sends out figure large;
Fig. 4 is the structural representation of valve body;
Fig. 5 is the sectional view of E-E in Fig. 4;
Fig. 6 is the structural representation of butterfly plate;
Fig. 7 is the sectional view of the C-C in Fig. 6.
In figure: valve body 1, upper valve rod 2, lower valve rod 3, butterfly plate 4, end cap 5, valve seat 6, filler 10, Gland 11, support 12, key 21, Sealing 41, ring shaped slot structure 42, sealing surface of seat 61.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Embodiment:
as Fig. 1, Fig. 2, shown in Figure 3, the bidirectional sealed butterfly valve that the present embodiment provides, comprise valve body 1, the support 12 that is threaded connection with valve body 1, upper in valve body, lower valve rod 2, 3, be positioned at the valve seat 6 of valve body, be installed on butterfly plate 4 and end cap 5 in valve body, upper valve rod 2 one ends are placed in outside valve body, the other end butterfly plate 4 interior with being placed in valve body is connected, between upper valve rod 2 and valve body 1, filler 10 is installed, the filler upper end is provided with Gland 11, reach better sealing effect, one end and the end cap 5 of lower valve rod 3 are fixed, the described lower valve rod the other end is connected and fixed by key 21 and butterfly plate 4, described upper valve rod 2 is connected with the key 21 that is connected to of butterfly plate 4, upper lower valve rod is all to be connected by key 21 with the Placement of butterfly plate 4, and be positioned at same gyration center with lower valve rod 3, the tilting both sides, the interior up and down of valve body that are arranged on of described valve seat 6, at an angle with level, on valve seat 6, peripheral end face is sealing surface of seat 61, butterfly plate exterior edge face and tilting sealing surface of seat 61 Spielpassung, Fig. 6, shown in Figure 7, the machine shaping of described butterfly plate periphery ring face is ring shaped slot structure 42, the cross section of described ring shaped slot structure 42 is rectangle, Sealing 41 is installed in ring channel structures, being line between Sealing 41 and tilting valve seat 6 contacts, described Sealing 41 is the O RunddichtringO.
Fig. 3, Fig. 4, shown in Figure 5, described sealing surface of seat 61 is sphere, corresponding butterfly plate exterior edge face also is sphere, the included angle A of described valve channel center line and the center line of sealing surface of seat is identical with the included angle B of described butterfly plate sphere centre line and valve channel center line, and the sphere centre point of described sealing surface of seat 61 is positioned at same point C with the central point of butterfly plate sphere.
Be further described in conjunction with above-mentioned and accompanying drawing:
The upper valve rod 2 that bidirectional sealed butterfly valve of the present utility model comprises valve body 1, be positioned at the integrated valve seat 6 of processing of valve inner, be arranged on the butterfly plate 4 of valve body, be connected by key with butterfly plate, with upper valve rod 2 be in same gyration center lower valve rod 3, O type circle and support 12 parts of butterfly plate outside groove are installed.
The inner chamber of described valve body is with tilting valve seat, and the angle of valve channel center line and sealing surface of seat center line is A, and sealing surface of seat 61 is inner ball surface, and the valve channel center that is centered close to of ball and the point of intersection C of valve rod rotating center.Sealing surface of seat 61 for the advantage of sphere is: when valve is in non-closed condition, remain that " line " contacts between O RunddichtringO and valve seat, make the hoisting capacity moment pole of valve low.
The outside of described butterfly plate is sphere, the center of ball and the ball center of valve base sealing are in same point C, butterfly plate outside processing ring shaped slot 42, the cross section of ring shaped slot 42 is rectangle, the kernel of section line of ring shaped slot and the angle of valve channel center line are B, and A=B, the centre of sphere of the kernel of section line of ring shaped slot and the intersection point of rotation centerline and valve seat Spherical Seals face is positioned on same point.
Described O type circle is arranged in ring shaped slot on butterfly plate as Sealing 41, with butterfly plate 4 be Spielpassung.When medium from shown in the direction flow valve time, O type circle produces distortion under the effect of medium power, can be adjacent to plane, bottom surface and the sealing surface of seat 61 of butterfly plate ring shaped slot 41 1 sides, fill the gap between butterfly plate and valve seat, make and do not produce leakage between the valve seal pair, need to prove that to import and export sealing configuration and the sealing principle of both sides identical because of valve, therefore the valve forward is identical with reverse sealing effect.
Described upper lower valve rod is arranged in valve body 1, adopt key 21 to be connected with butterfly plate 4, upper lower valve rod is positioned at same gyration center, the valve rod of common butterfly valve adopts straight pin or taper pin to be connected with butterfly plate, the pin-and-hole of this connection needs valve rod and butterfly plate to join brill, the Location accuracy of guarantee pin, course of working is more loaded down with trivial details, and do not have interchangeability between butterfly plate and valve rod, in addition, valve installation is after on pipeline, when needs are changed O type circle, straight pin or taper pin are not easy dismounting, make troubles for the replacing of accessory.The valve rod of the utility model bidirectional sealed butterfly valve is connected with the key 21 that butterfly plate 4 adopts, and the advantage of this connection is: valve rod and valve rod, have interchangeability between butterfly plate and butterfly plate, and be convenient to assembling, can effectively enhance productivity.After valve installation used, the key 21 that only need pull down between upper and lower valve rod 2,3 and butterfly plate 4 can take out butterfly plate 4 in valve body, thereby changes more easily O type circle.
The working principle of the utility model bidirectional sealed butterfly valve: under the moment loading of drive unit, valve rod passes torque to butterfly plate 4, thereby drives butterfly plate 4 rotations, realizes the unlatching of valve or closes.
Claims (5)
1. bidirectional sealed butterfly valve, comprise valve body, upper in valve body, lower valve rod, be positioned at the valve seat of valve body, be installed on butterfly plate and end cap in valve body, upper valve rod one end is placed in outside valve body, the butterfly plate of the other end in valve body connects, one end and the end cap of lower valve rod are fixed, it is characterized in that: the described lower valve rod the other end is connected and fixed by key and butterfly plate, the tilting both sides, the interior up and down of valve body that are arranged on of described valve seat, on valve seat, peripheral end face is sealing surface of seat, butterfly plate exterior edge face and tilting sealing surface of seat Spielpassung, the machine shaping of described butterfly plate periphery ring face is the ring shaped slot structure of indent, Sealing is installed in ring channel structures, being line between Sealing and tilting valve seat contacts.
2. bidirectional sealed butterfly valve according to claim 1, it is characterized in that: described upper valve rod is connected with the key that is connected to of butterfly plate, and is positioned at same gyration center with lower valve rod.
3. bidirectional sealed butterfly valve according to claim 1 and 2, it is characterized in that: described sealing surface of seat is sphere, corresponding butterfly plate exterior edge face is sphere, the angle of described valve channel center line and the center line of sealing surface of seat is identical with the angle of described butterfly plate sphere centre line and valve channel center line, and the sphere centre point of described sealing surface of seat is positioned at same point with the central point of butterfly plate sphere.
4. bidirectional sealed butterfly valve according to claim 1.It is characterized in that: described Sealing is the O RunddichtringO.
5. bidirectional sealed butterfly valve according to claim 1.It is characterized in that: the cross section of described ring shaped slot is rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220715893 CN202946700U (en) | 2012-11-05 | 2012-12-04 | Two-way sealing butterfly valve |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220617815.0 | 2012-11-05 | ||
| CN201220617815 | 2012-11-05 | ||
| CN 201220715893 CN202946700U (en) | 2012-11-05 | 2012-12-04 | Two-way sealing butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202946700U true CN202946700U (en) | 2013-05-22 |
Family
ID=48422402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220715893 Expired - Fee Related CN202946700U (en) | 2012-11-05 | 2012-12-04 | Two-way sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202946700U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016762A (en) * | 2012-11-05 | 2013-04-03 | 宣达实业集团浙江耐森阀业有限公司 | Bidirectional sealing butterfly valve |
-
2012
- 2012-12-04 CN CN 201220715893 patent/CN202946700U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016762A (en) * | 2012-11-05 | 2013-04-03 | 宣达实业集团浙江耐森阀业有限公司 | Bidirectional sealing butterfly valve |
| CN103016762B (en) * | 2012-11-05 | 2015-11-18 | 宣达实业集团浙江耐森阀业有限公司 | Bidirectional sealed butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: XUANDA INDUSTRIAL GROUP CO., LTD. Free format text: FORMER OWNER: XUANDA INDUSTRIAL GROUP ZHEJIANG NAISEN VALVE CO., LTD. Effective date: 20140123 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 325100 WENZHOU, ZHEJIANG PROVINCE TO: 325105 WENZHOU, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140123 Address after: Dong'ou Industrial Park, Yongjia County, Wenzhou City, Zhejiang province 325105 Patentee after: XUANDA INDUSTRIAL GROUP Co.,Ltd. Address before: Dong'ou Industrial Zone Oubei town of Yongjia County, Wenzhou City, Zhejiang province 325100 Patentee before: XUANDA IND GROUP ZHEJIANG NAISEN VALVE Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130522 Termination date: 20211204 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |