CN204267758U - Selfsealings butterfly valve - Google Patents
Selfsealings butterfly valve Download PDFInfo
- Publication number
- CN204267758U CN204267758U CN201420451636.3U CN201420451636U CN204267758U CN 204267758 U CN204267758 U CN 204267758U CN 201420451636 U CN201420451636 U CN 201420451636U CN 204267758 U CN204267758 U CN 204267758U
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- ring
- valve plate
- valve
- elastic seal
- selfsealings
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Abstract
The utility model discloses a kind of selfsealings butterfly valve, comprise valve body, fluid passage is provided with in valve body, valve plate is provided with in fluid passage, valve plate top is connected with the live axle power be rotatably connected on valve body, valve plate bottom and the back shaft be connected on valve body are rotationally connected, it is characterized in that described valve plate is set with the elastic seal ring that the outer rim of the both ends of the surface of the outer circumferential face of valve plate and valve plate can be sandwiched within it, the all axial evagination of outer rim of elastic seal ring both ends of the surface, thus form the bipassage ring lip can fitted with fluid passage inwall; Described ring lip from thickening gradually outside to inside, thus makes the inner ring surface of described ring lip be plane of inclination.The centre-pivoted butterfly valve good sealing effect of this structure, opens and closes flexibly, long service life.
Description
Technical field
The utility model relates to a kind of selfsealings butterfly valve.
Background technique
Existing centre-pivoted butterfly valve comprises valve body, fluid passage is provided with in valve body, be provided with the valve plate that outer surface is coated with elastic sealing layer in fluid passage, valve plate top is connected with the live axle power be rotatably connected on valve body, and valve plate bottom and the back shaft be connected on valve body are rotationally connected.Centered by the axis of live axle and back shaft, carry out rotation by drive shaft valve plate and complete opening and closing, by valve plate and fluid passage inwall, the extruding to the elastic sealing layer be coated on valve plate outer circumferential face makes it to occur the sealing that resiliently deformable realizes when closing.The centre-pivoted butterfly valve of said structure, mainly there is following shortcoming: one is higher to the rigid requirements of valve body and valve shaft, if the rigidity of valve body is not enough, then can deform under the effect of hydrodynamic pressure, valve body is caused to contact with valve plate not tight and cause leakage, if valve shaft rigidity is not enough, under the effect of hydrodynamic pressure, valve plate then can produce displacement along the axis of fluid passage, and causes valve leak; In order to improve valve body and valve shaft rigidity, certainly will to strengthen the material consumption of valve body and valve shaft, thus cause the weight of valve body and valve shaft large, cause fabricating cost high.Two is because elastic sealing layer pressurized is comparatively large, not only causes valve opening and closing moment of torsion large, and makes the increased wear of elastic sealing layer, make the working life of valve short, more be not suitable for opening and closing pipe-line system frequently, in addition due to the deadweight of valve plate, the degree of difficulty also exacerbating wearing and tearing and open and close.
Model utility content
One of the technical problems to be solved in the utility model is for above-mentioned defect one, provide a kind of to valve body and valve shaft rigid requirements not high, valve body and valve shaft weight can be effectively reduced, reduce fabricating cost and the selfsealings butterfly valve of good sealing effect.
Two of the technical problems to be solved in the utility model is for above-mentioned defect two, provide that a kind of open and close torque is little, the wearing and tearing that can reduce elastic sealing layer further, valve long service life and be applicable to opening and closing the selfsealings butterfly valve that pipe-line system frequently uses.
In order to one of solve the problems of the technologies described above, the technological scheme that the utility model provides is: selfsealings butterfly valve comprises valve body, fluid passage is provided with in valve body, valve plate is provided with in fluid passage, valve plate top is connected with the live axle power be rotatably connected on valve body, valve plate bottom and the back shaft be connected on valve body are rotationally connected, it is characterized in that described valve plate is set with the elastic seal ring that the outer rim of the both ends of the surface of the outer circumferential face of valve plate and valve plate can be sandwiched within it, the all axial evagination of outer rim of elastic seal ring both ends of the surface, thus form the bipassage ring lip can fitted with fluid passage inwall, described ring lip from thickening gradually outside to inside, thus makes the inner ring surface of described ring lip be plane of inclination.
In order to solve the problems of the technologies described above two, on the basis of technique scheme, do following improvement: described valve plate top is provided with for being connected portion of expanding with live axle, valve plate bottom is provided with for expanding portion under being connected with back shaft, above expand portion lower surface with under expand the upper surface in portion be oppositely arranged and on expand and under the area of lower surface is greater than, to expand the area of portion's upper surface.
In order to elastic seal ring is connected with the reliable of valve plate, described elastic seal ring comprises the ring set of the outer circumferential face for coated valve plate, the relative both sides of ring set are respectively equipped with live axle mounting hole and back shaft mounting hole, the internal face of ring set is interval with two panels catch, two panels catch and ring set surround the installation annular groove for being set with valve plate, the outer side surface of two panels catch forms the both ends of the surface of described elastic seal ring, described ring lip is located in the outer rim of described catch, and the both ends of the surface of described elastic seal ring are respectively equipped with convex tendon.
More reliable in order to what make elastic seal ring be connected with valve plate, cause elastic seal ring local shedding when preventing valve plate from rotating or all come off, the both ends of the surface of described valve plate are respectively connected with a back-up ring, the interior edge face of two back-up rings rides in the both ends of the surface of elastic seal ring respectively, the outer circumferential face of two back-up rings is the plane of inclination that can lean on described inner ring surface, the interior edge face of described back-up ring is provided with positioning ring groove, and described convex tendon can insert in described positioning ring groove.
Connection in order to back-up ring and valve plate is easy and conveniently adjust the extruding degree of back-up ring to elastic seal ring, described back-up ring pressed on ring is furnished with multiple bolt mounting hole and multiple tapped hole, described back-up ring is connected on valve plate by penetrating described bolt mounting hole inner bolt, is bolted with the screw leaned on valve plate in described tapped hole.
For the ease of machine shaping and the Simplified flowsheet of back-up ring, described back-up ring is the Split type structure be made up of multi-disc unit lamina, each unit lamina is at least provided with two bolt mounting holes and a tapped hole.
In order to not affect the selfsealings effect of ring lip, anti-Sealing shield ring affect ring lip under the pressure of fluid with the laminating effect of fluid passage inwall, the thickness of described back-up ring is less than the axial length of described ring lip.
In order to being easy to get of material, described elastic seal ring is rubber seal or teflin ring.
The selfsealings butterfly valve of said structure, outer surface is coated with the valve plate of elastic sealing layer or outward edge and is set with the valve plate of elastic seal ring and fluid passage adopts micro-interference fit, the low pressure seal of fluid can be met, along with progressively increasing of fluid passage fluid pressure, fluid compression ring lip, inner ring surface due to ring lip is plane of inclination, ring lip produces radial component by after fluid compression, thus ring lip and fluid passage inwall are fitted tightly, form selfsealings, thus good sealing effect of the present utility model.Moreover, because ring lip can realize selfsealings under the effect of hydrodynamic pressure, even if the slight deformation of valve body and valve shaft, ring lip also can fit tightly with fluid passage inwall under the effect of hydrodynamic pressure, therefore, under the prerequisite meeting valve body and valve shaft intensity, suitably rigidity requirement can be reduced, namely suitably the wall thickness of valve body and the diameter of valve shaft is reduced, the object save material to reach, reducing cost of production.
Selfsealings butterfly valve after improvement, due to above expand portion lower surface with under expand the upper surface in portion be oppositely arranged and on expand and under the area of lower surface is greater than, to expand the area of portion's upper surface, fluid matasomatism in the upper pressure expanded on lower surface than fluid matasomatism under to expand portion's upper surface upward pressure large, namely there is pressure difference, this pressure difference effectively can reduce the deadweight of valve plate, valve plate is made to obtain the effect of floating to live axle direction, therefore, not only can reduce to conduct oneself with dignity the wearing and tearing of the elastic sealing layer brought due to valve plate, thus extend the working life of valve, and open and can reduce open and close torque, make the unlatching of valve flexible.
In sum, the utility model has the following advantages: 1, can realize selfsealings, good sealing effect; 2, not high to the rigidity requirement of valve body and valve shaft, the wall thickness of valve body and the diameter of valve shaft can be reduced, saved material and reduced cost of production; 3, open and close torque little, open and close flexibly, wear and tear little, valve long service life; 4, can be used for opening and closing pipe-line system frequently.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail:
Fig. 1 is the structural representation of selfsealings butterfly valve;
Fig. 2 is the D direction view of Fig. 1;
Fig. 3 is the structural representation of valve plate shown in Fig. 1;
Fig. 4 is the sectional view along E-E line in Fig. 3;
Fig. 5 is the sectional view of F-F line in Fig. 3
Fig. 6 is the structural representation of the elastic seal ring shown in Fig. 1;
Fig. 7 is the sectional view along G-G line in Fig. 6;
Fig. 8 is the sectional view along H-H line in Fig. 6;
Fig. 9 is the structural representation of the back-up ring shown in Fig. 1;
Figure 10 is the sectional view along I-I line in Fig. 9;
Figure 11 is the sectional view along J-J line in Fig. 9.
Embodiment
With reference to Fig. 1, selfsealings butterfly valve comprises valve body 1, fluid passage 2 is provided with in valve body, valve plate 4 is provided with in fluid passage 2, valve plate 4 top is connected with live axle 5 power be rotatably connected on valve body 1, valve plate 4 bottom and the back shaft 6 be connected on valve body are rotationally connected, and the rotation of live axle 5 can order about the keying that valve plate 4 rotates to realize valve.Live axle 5 and back shaft 6 all adopt seal approach to assemble with valve body 1, and sealing measure is known technology, such as, the mode that is set with seal ring at live axle 5 and back shaft 6 can be adopted to realize being sealed and matched of itself and valve body 1.Described valve plate 4 is set with the elastic seal ring 11 that the outer rim of the both ends of the surface of the outer circumferential face of valve plate 4 and valve plate 4 can be sandwiched within it, the interior edge face both ends of the surface of valve plate 4 being respectively bolted a back-up ring 12, two back-up rings 12 rides in the both ends of the surface of elastic seal ring 12 respectively.The all axial evagination of outer rim of elastic seal ring 11 both ends of the surface, thus form the bipassage ring lip 7 can fitted with fluid passage 2 inwall; Described ring lip 7 from thickening gradually outside to inside, thus makes the inner ring surface 8 of described ring lip 7 for plane of inclination.Elastic seal ring adopts rubber seal or teflin ring.
With reference to Fig. 1, Fig. 6, Fig. 7 and Fig. 8, described elastic seal ring 11 comprises the ring set 11-1 of the outer circumferential face for coated valve plate 4, the relative both sides of ring set 11-1 are respectively equipped with the live axle mounting hole 11-4 installed for the live axle 5 and back shaft mounting hole 11-5 installed for back shaft, the internal face of ring set 11-1 is interval with two panels catch 11-2, two panels catch 11-2 and ring set 11-1 surrounds and installs annular groove 11-3, elastic seal ring 11 is sleeved in the outer rim of valve plate 4 by installing annular groove 11-3, the outer side surface of two panels catch 11-2 forms the both ends of the surface of described elastic seal ring 11, the all axial evagination in outer rim position of described catch 11-2 outer side surface forms described ring lip 7, in the both ends of the surface of described elastic seal ring 11 i.e. two panels catch 11-2 outer side surface on be respectively equipped with convex tendon 14.
With reference to Fig. 1, Fig. 9, Figure 10 and Figure 11, described back-up ring 12 is an annular disc, disk interior edge face is provided with positioning ring groove 13, disk outer circumferential face is plane of inclination, disk pressed on ring is furnished with multiple bolt mounting hole 15 and multiple tapped hole 17, and described bolt mounting hole 15 and tapped hole 17 are crisscross arranged and are namely provided with a tapped hole 17 between adjacent two bolt mounting holes 15.In order to shaping easy and succinct production process, described back-up ring 12 can be arranged to Split type structure, and namely back-up ring is made up of multi-disc unit lamina, each unit lamina is at least provided with two bolt mounting holes 15 and a tapped hole 17.
See figures.1.and.2, elastic seal ring 11 is sleeved on after on valve plate 4, two back-up rings 12 are screwed onto in the both ends of the surface of valve plate 4 by the bolt 16 through described bolt mounting hole 15 respectively, described convex tendon 14 inserts in described annular groove 13, and convex tendon 14 and annular groove 13 match and can be better fixed on valve plate 4 by elastic seal ring 11.The interior edge face of one back-up ring 12 rides on an end face of elastic seal ring 11, its outer circumferential face abuts on the inner ring surface 8 of a ring lip 7, the interior edge face of another back-up ring 12 rides on the other end of elastic seal ring 11, and its outer circumferential face abuts on the inner ring surface 8 of another ring lip 7.The screw 18 leaned on valve plate 4 is bolted with in described tapped hole 17.By the degree of tightness of adjusting bolt 16 and screw 18, the extruding degree that can change back-up ring 12 pairs of elastic seal rings 11 makes it suitable radial deformation occurs, to obtain suitable magnitude of interference required when elastic seal ring 11 and fluid passage 2 are assembled.In order to anti-Sealing shield ring 12 interferes described ring lip 7 resiliently deformable under the pressure of fluid, affect the laminating of ring lip 7 and fluid passage 2 inwall and cause selfsealings poor effect, the thickness of described back-up ring 12 is less than the axial length of described ring lip 7.
With reference to Fig. 3, Fig. 4 and Fig. 5, described valve plate 4 top is provided with for being connected portion 9 of expanding with live axle 5, valve plate 4 bottom is provided with for expanding portion 10 under being connected with back shaft 6, above expand portion 9 lower surface with under expand the upper surface in portion 10 be oppositely arranged and on expand and under the area of portion 9 lower surface is greater than, to expand the area of portion 10 upper surface.Pressure difference is there is in fluid at upper portion 9 and the lower pressure that portion 10 produces that expands of expanding, this pressure difference effectively can reduce the deadweight of valve plate, makes valve plate obtain the effect of floating to live axle direction, makes valve opening and closing torque little, not only open flexibly, and the wearing and tearing of elastic seal ring can be reduced.
Claims (7)
1. a selfsealings butterfly valve, comprise valve body (1), fluid passage (2) is provided with in valve body, valve plate (4) is provided with in fluid passage (2), valve plate (4) top is connected with live axle (5) power be rotatably connected on valve body (1), valve plate (4) bottom and the back shaft (6) be connected on valve body are rotationally connected, it is characterized in that described valve plate (4) is set with the elastic seal ring (11) that the outer rim of the both ends of the surface of the outer circumferential face of valve plate (4) and valve plate (4) can be sandwiched within it, the all axial evagination of outer rim of elastic seal ring (11) both ends of the surface, thus form the bipassage ring lip (7) can fitted with fluid passage (2) inwall, described ring lip (7) is from thickening gradually outside to inside, thus the inner ring surface (8) making described ring lip (7) is plane of inclination, described elastic seal ring (11) comprises the ring set (11-1) for the outer circumferential face of coated valve plate (4), the relative both sides of ring set (11-1) are respectively equipped with live axle mounting hole (11-4) and back shaft mounting hole (11-5), the internal face of ring set (11-1) is interval with two panels catch (11-2), two panels catch (11-2) and ring set (11-1) surround the installation annular groove (11-3) for being set with valve plate (4), the outer side surface of two panels catch (11-2) forms the both ends of the surface of described elastic seal ring (11), described ring lip (7) is located in the outer rim of described catch (11-2), the both ends of the surface of described elastic seal ring (11) are respectively equipped with convex tendon (14).
2. selfsealings butterfly valve as claimed in claim 1, the both ends of the surface that it is characterized in that described valve plate (4) are respectively connected with a back-up ring (12), the interior edge face of two back-up rings (12) rides in the both ends of the surface of elastic seal ring (12) respectively, the outer circumferential face of two back-up rings (12) is the plane of inclination that can lean on described inner ring surface (8), the interior edge face of described back-up ring (12) is provided with positioning ring groove (13), and described convex tendon (14) can insert in described positioning ring groove (13).
3. selfsealings butterfly valve as claimed in claim 2, it is characterized in that described back-up ring (12) pressed on ring is furnished with multiple bolt mounting holes (15) and multiple tapped hole (17), described back-up ring (12) is connected on valve plate (4) by penetrating described bolt mounting hole (15) inner bolt (16), is bolted with the screw (18) leaned on valve plate (4) in described tapped hole (17).
4. selfsealings butterfly valve as claimed in claim 3, is characterized in that described back-up ring (12) is the Split type structure be made up of multi-disc unit lamina, each unit lamina is at least provided with two bolt mounting holes (15) and a tapped hole (17).
5. selfsealings butterfly valve as claimed in claim 2, is characterized in that the thickness of described back-up ring (12) is less than the axial length of described ring lip (7).
6. the selfsealings butterfly valve as described in claim arbitrary in claim 1-5, it is characterized in that described valve plate (4) top is provided with for being connected portion (9) of expanding with live axle (5), valve plate (4) bottom is provided with for expanding portion (10) under being connected with back shaft (6), above expand portion (9) lower surface with under expand the upper surface in portion (10) be oppositely arranged and on expand and under the area of portion (9) lower surface is greater than, to expand the area of portion (10) upper surface.
7. selfsealings butterfly valve as claimed in claim 1, is characterized in that described elastic seal ring (11) is for rubber seal or teflin ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420451636.3U CN204267758U (en) | 2014-08-12 | 2014-08-12 | Selfsealings butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420451636.3U CN204267758U (en) | 2014-08-12 | 2014-08-12 | Selfsealings butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204267758U true CN204267758U (en) | 2015-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420451636.3U Active CN204267758U (en) | 2014-08-12 | 2014-08-12 | Selfsealings butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204267758U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108386553A (en) * | 2018-05-21 | 2018-08-10 | 南通升辉机械有限公司 | A kind of novel manual butterfly valve |
-
2014
- 2014-08-12 CN CN201420451636.3U patent/CN204267758U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108386553A (en) * | 2018-05-21 | 2018-08-10 | 南通升辉机械有限公司 | A kind of novel manual butterfly valve |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180522 Address after: 262737 Hai Yan Road, Binhai Economic and Technological Development Zone, Weifang, Shandong, north of the two street, West Pearl River East. Patentee after: Shandong Ryder pipe valve Co., Ltd. Address before: 261057 3998 West Outer Ring Road, Weicheng District, Weifang, Shandong. Patentee before: Shandong Lede Machinery Co., Ltd. |