CN203532777U - Three-eccentric hard-sealing butterfly valve - Google Patents
Three-eccentric hard-sealing butterfly valve Download PDFInfo
- Publication number
- CN203532777U CN203532777U CN201320627885.9U CN201320627885U CN203532777U CN 203532777 U CN203532777 U CN 203532777U CN 201320627885 U CN201320627885 U CN 201320627885U CN 203532777 U CN203532777 U CN 203532777U
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- Prior art keywords
- butterfly plate
- valve
- hole
- valve rod
- butterfly
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- 238000007789 sealing Methods 0.000 title abstract description 8
- 238000003801 milling Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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Abstract
The utility model discloses a three-eccentric hard-sealing butterfly valve which comprises a valve body, a valve rod, a butterfly plate and an actuating element used for driving the valve rod to rotate. The back face of the butterfly plate protrudes outwards to form a supporting lug with a rod hole, the valve rod penetrates through the rod hole and is fixedly connected with the butterfly plate, the supporting lug is provided with a locating hole which penetrates through the supporting lug in the direction parallel to the butterfly plate, the locating hole vertically intersects with the rod hole, a locating groove is formed in the cross position of the outer edge of the valve rod and the locating hole, and a locating piece is inserted into the locating hole and is clamped in the locating groove. According to the three-eccentric hard-sealing butterfly valve, the locating hole which is parallel to the butterfly plate and perpendicular to the rod hole is formed in the supporting lug of the butterfly plate, a pin hole penetrating through the valve rod and parts of the butterfly plate is prevented from being drilled, the damage to the intensity of the valve rod and the butterfly plate is reduced greatly, and the reliability of the using of the butterfly valve is increased. The locating piece fixed in the locating hole is clamped in the locating groove of the outer edge of the valve rod at the same time, and the fixed connection and transmission of the valve rod and the butterfly plate are achieved. The three-eccentric hard-sealing butterfly valve is reasonable in structure, convenient to demount, and suitable for being used in low pressure work conditions.
Description
Technical field
The utility model relates to a kind of butterfly valve, particularly a kind of three eccentric hard sealed flygates that are suitable for the use of low pressure operating mode.
Background technique
Butterfly valve refers to that closure member is the butterfly plate of disc-shape, and butterfly plate rotates to reach a kind of valve of opening or closing around the axis of valve rod, and on pipeline, main rising cut off and throttling action.Along with the development of industrial technology, common butterfly valve can not meet industrial demand, has successively experienced the differentiation of concentric, single bias, two bias and three bias for meeting various working condition requirements, butterfly valve.Butterfly plate center is departed from the valve rod axle center of three eccentric butterfly valve simultaneously and body center is two bias, and sealing pair is that tilted conical surface is the 3rd bias, and its unique eccentric structure makes it have the more tighter sealability in pass, so the sealability of this type of valve is reliable.Three eccentric butterfly valve is mainly used in the fields such as petrochemical industry, desalination of sea water, medical apparatus, metallurgy, electric power, nuclear energy.Three eccentric butterfly valve structure is quite ripe both at home and abroad, to requiring the three eccentric butterfly valve product that is applied to the complex working conditions such as High Temperature High Pressure to get more and more, to the leakage class of valve, require also more and more higher, therefore valve components machining accuracy and other external factor affect the performance of valve directly or indirectly, on this basis the optimization of valve mechanism more can improve valve performance, reduce production costs.
The both sides of the sealing pair of hard seal butterfly valve are all metallic material or other harder material.In three eccentric hard sealed flygates manufacture and design, the intensity of seal ring has directly limited the maximum permissible pressure of valve, the cooperate degree of valve valve seat and seal ring directly affects valve leak grade, and the linkage structure of valve rod and butterfly plate has affected valve processing and assembling and the safety rate of opening/shutting valve in actual conditions.Three eccentric hard sealed flygates that have are suitable for low pressure operating mode to be used, its valve rod penetrates valve body and is fixedly connected with butterfly plate and is linked with driving mechanism, because transmitted load is little, valve rod generally by pin Placement realize with butterfly plate between be fixedly connected with and transmission, thereby just the pin-and-hole that supply and marketing is passed need to be set on butterfly plate and valve rod, pin-and-hole direct puncture valve rod and part butterfly plate, cause the intensity of valve rod and butterfly plate to be subject to larger infringement, reduced the reliability that butterfly valve uses, not only bad for installation and removal, and the working life of the butterfly valve that can detract, increase user cost.
Therefore, be necessary existing three eccentric hard sealed flygates to improve, its butterfly plate and valve rod achieve a fixed connection and transmission by a kind of more efficiently mode, greatly reduce the intensity infringement that valve rod and butterfly plate are caused, increase the reliability that butterfly valve uses, and be convenient to installation and removal, guarantee that the working life of butterfly valve is to control user cost.
Model utility content
In view of this, the purpose of this utility model is to provide a kind of three eccentric hard sealed flygates, its butterfly plate and valve rod achieve a fixed connection and transmission by a kind of more efficiently mode, greatly reduce the intensity infringement that valve rod and butterfly plate are caused, increase the reliability that butterfly valve uses, and be convenient to installation and removal, guarantee that the working life of butterfly valve is to control user cost.
Three eccentric hard sealed flygates of the present utility model, comprise valve body, valve rod, butterfly plate and the actuator for driving described valve rod to rotate, described butterfly plate back side evagination forms the journal stirrup with bar hole, described valve rod is fixedly connected with described butterfly plate through described bar hole, described journal stirrup is provided with the positioning hole that runs through described journal stirrup from the direction parallel with described butterfly plate, described positioning hole and described bar hole intersect vertically, the crossing position of the outward edge of described valve rod and described positioning hole is provided with locating slot, and locating piece inserts described positioning hole and is stuck in described locating slot.
Further, described positioning hole is circular hole, and described locating piece comprises and the cylindrical portion of described positioning hole interference fit and the straight part coordinating with described locating slot phase shape.
Further, described locating piece is formed through milling is flat by straight pin.
Further, described straight part is semicylinder, and the flat bottom surface of semicylinder contacts with the straight groove face of described locating slot.
Further, also comprise valve seat and seal ring, described seal ring is made by hard metal, described valve seat and described valve body are assembly parts, described valve seat is conical surface shape ringwise, the small-caliber end of described valve seat is near valve channel port, and described seal ring is fixed on described butterfly plate and for realizing being tightly connected of described valve seat and butterfly plate by trim ring and socket head screw.
Further, described butterfly plate is provided with upper shoulder and lower shoulder towards the edge of described valve channel port one side, described ring set shoulder on described, described trim ring is sleeved on described lower shoulder and contacts with described seal ring formation face, and described socket head screw is fixed on described trim ring and seal ring the outer edge of described butterfly plate by the fixed hole on described trim ring and described butterfly plate.
The beneficial effects of the utility model: three eccentric hard sealed flygates of the present utility model, by parallel with butterfly plate and vertical with bar hole positioning hole is set on the journal stirrup of butterfly plate, avoid being drilled with the pin-and-hole of direct puncture valve rod and part butterfly plate, greatly reduce the intensity infringement that valve rod and butterfly plate are caused, increase the reliability that butterfly valve uses; The locating piece being fixed in positioning hole is stuck in the outer peripheral locating slot of valve rod simultaneously, thereby realizes being fixedly connected with and transmission of valve rod and butterfly plate; The utility model is rational in infrastructure, mounting or dismounting are convenient, is suitable for low pressure operating mode and uses.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is A place enlarged view in Fig. 1;
Fig. 3 is B-B sectional view in Fig. 2.
Embodiment
Fig. 1 is the structural representation of the present embodiment, Fig. 2 is A place enlarged view in Fig. 1, Fig. 3 is B-B sectional view in Fig. 2, as shown in the figure: three eccentric hard sealed flygates of the present embodiment, comprise valve body 1, valve rod 2, butterfly plate 3 and the actuator 4 for driving described valve rod 2 to rotate, described butterfly plate 3 back side evaginations form the journal stirrup 31 with bar hole 31a, described valve rod 2 is fixedly connected with described butterfly plate 3 through described bar hole 31a, described journal stirrup 31 is provided with the positioning hole 31b that runs through described journal stirrup 31 from the direction parallel with described butterfly plate 3, described positioning hole 31b and described bar hole 31a intersect vertically, the crossing position of the outward edge of described valve rod 2 and described positioning hole 31b is provided with locating slot 21, locating piece 5 inserts described positioning hole 31b and is stuck in described locating slot 21, actuator 4 can be manpower handle, can be also electric power, hydraulically powered handle, by handle with sleeve band ovable valve stem 2, rotate, 2 of valve rods drive butterfly plate 3 to rotate, the front of butterfly plate 3 is near valve channel port, and valve channel port is valve body 1 left side in Fig. 1, and valve channel is away from a side of valve rod 2, and butterfly plate 3 back sides are the another side with its vis-a-vis, journal stirrup 31 is a part for butterfly plate 3, comprises for valve rod 2 the bar hole 31a passing and the support plate being connected with butterfly plate 3, wherein, support plate can be continuous structure or discontinuous structure, and the former refers to that support plate can cover valve rod 2 completely, thereby latter refers to that support plate not exclusively covers valve rod 2 and causes outside valve rod 2 is exposed to, in the present embodiment, butterfly plate 3 has two discontinuous and symmetrically arranged journal stirrups 31, by parallel with butterfly plate 3 and vertical with bar hole 2 positioning hole 31b is set on journal stirrup 31, avoid being drilled with the pin-and-hole of direct puncture valve rod 2 and part butterfly plate 3, greatly reduce the intensity infringement that valve rod 2 and butterfly plate 3 are caused, increase the reliability of this butterfly valve use, the locating piece 5 being fixed in positioning hole 31b is stuck in the outer peripheral locating slot 21 of valve rod 2 simultaneously, thereby realizes being fixedly connected with and transmission of valve rod 2 and butterfly plate 3
In the present embodiment, described positioning hole 31b is circular hole, and described locating piece 5 comprises and the cylindrical portion 51 of described positioning hole 31b interference fit and the straight part 52 coordinating with described locating slot 21 phase shapes; The processing technology of circular hole is simple, is conducive to reduce production costs; Cylindrical portion 51 is one-body molded with straight part 52, to strengthen the intensity of locating piece 5; Cylindrical portion 51 is a cylindrical body, and its diameter, than the slightly larger in diameter of positioning hole 31b, connects to form interference fit; The width of straight part 52 is less than the diameter of cylindrical portion 51, and straight part 52 has the circumferential surface coordinating with positioning hole 31b phase shape and the flat bottom surface coordinating with the straight groove face phase shape of locating slot 21, realizes firmly and connecting; Meanwhile, for prevent locating piece 5 transmitting torques steadily, can stop bit part 9 be set in one end of the close straight part 52 of positioning hole 31b; The width of stop bit part 9 is less than the width of straight part 52, is convenient to dismantle locating piece 5.
In the present embodiment, described locating piece 5 is formed through milling is flat by straight pin, and manufacturing process is simple, is easy to machine shaping; Also to be that milling is flat on common valve rod 2 form locating slot 21, and locating slot 21, straight part 52 shapes, size are corresponding, are convenient to connect.
In the present embodiment, described straight part 52 is semicylinder, and after having assembled, the straight groove face close contact of the flat bottom surface of semicylinder and described locating slot 21, forms connection, drive mechanism.
In the present embodiment, also comprise valve seat and seal ring 6, described seal ring 6 is made by hard metal, described valve seat and described valve body 1 are assembly parts, described valve seat is conical surface shape ringwise, the small-caliber end of described valve seat is near valve channel port, and described seal ring 6 is fixed on described butterfly plate 3 and for realizing being tightly connected of described valve seat and butterfly plate 3 by trim ring 7 and socket head screw 71; Valve seat and valve body 1 are assembly parts, and the two one-body molded or valve seat is flush-mounted in valve body 1, can reduce the leakage space that linkage structure causes; Seal ring 6 adopts metallic hard material to make, and coordinating is the valve seat of metallic hard material equally, makes this butterfly valve form hard sealing structure, can adapt to the environment such as high temperature, high pressure and corrosion; Valve seat and seal ring 6 form surface of contact and reach sealing effect, so the shape of the two is corresponding relation.
In the present embodiment, described butterfly plate 3 is provided with upper shoulder 32 and lower shoulder 33 towards the edge of described valve channel port one side, described seal ring 6 is sleeved on described upper shoulder 32, described trim ring 7 is sleeved on described lower shoulder 33 and contacts with described seal ring 6 formation faces, and described socket head screw 71 is fixed on described trim ring 7 and seal ring 6 by the fixed hole on described trim ring 7 and described butterfly plate 3 outer edge of described butterfly plate 3; Upper shoulder 32 and lower shoulder 33 are vertical riser shape; For further preventing fluid leakage, before being sleeved on shoulder 32, seal ring 6 also must be set with one deck pad; The integral width of seal ring 6 is slightly larger than the bottom width of shoulder 32, and in the process of tightening gradually socket head screw 71, trim ring 7 can produce laterally extruding to seal ring 6 and make its generation resiliently deformable, produces pretightening force, makes to connect fastening; The width of upper shoulder 32 is preferably 1/3 of butterfly plate 3 width, and the width of lower shoulder 33 is also preferably 1/3 of butterfly plate 3 width.
Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (6)
1. an eccentric hard sealed flygate, comprise valve body (1), valve rod (2), butterfly plate (3) and the actuator (4) for driving described valve rod (2) to rotate, described butterfly plate (3) back side evagination forms the journal stirrup (31) with bar hole (31a), described valve rod (2) is fixedly connected with described butterfly plate (3) through described bar hole (31a), it is characterized in that: described journal stirrup (31) is provided with the positioning hole (31b) that runs through described journal stirrup (31) from the direction parallel with described butterfly plate (3), described positioning hole (31b) intersects vertically with described bar hole (31a), the crossing position of the outward edge of described valve rod (2) and described positioning hole (31b) is provided with locating slot (21), locating piece (5) inserts described positioning hole (31b) and is stuck in described locating slot (21).
2. three eccentric hard sealed flygates according to claim 1, it is characterized in that: described positioning hole (31b) is circular hole, and described locating piece (5) comprises and the cylindrical portion (51) of described positioning hole (31b) interference fit and the straight part (52) coordinating with described locating slot (21) phase shape.
3. three eccentric hard sealed flygates according to claim 2, is characterized in that: described locating piece (5) is formed through milling is flat by straight pin.
4. three eccentric hard sealed flygates according to claim 3, is characterized in that: described straight part (52) is semicylinder, and the flat bottom surface of semicylinder contacts with the straight groove face of described locating slot (21).
5. according to three eccentric hard sealed flygates described in any one in claim 1 to 4, it is characterized in that: also comprise valve seat and seal ring (6), described seal ring (6) is made by hard metal, described valve seat and described valve body (1) are assembly parts, described valve seat is conical surface shape ringwise, the small-caliber end of described valve seat is near valve channel port, and described seal ring (6) is fixed on described butterfly plate (3) and for realizing being tightly connected of described valve seat and butterfly plate (3) by trim ring (7) and socket head screw (71).
6. three eccentric hard sealed flygates according to claim 5, it is characterized in that: described butterfly plate (3) is provided with upper shoulder (32) and lower shoulder (33) towards the edge of described valve channel port one side, described seal ring (6) is sleeved on described upper shoulder (32), described trim ring (7) is sleeved on described lower shoulder (33) and contacts with described seal ring (6) formation face, described socket head screw (71) is fixed on described trim ring (7) and seal ring (6) outer edge of described butterfly plate (3) by the fixed hole on described trim ring (7) and described butterfly plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320627885.9U CN203532777U (en) | 2013-10-11 | 2013-10-11 | Three-eccentric hard-sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320627885.9U CN203532777U (en) | 2013-10-11 | 2013-10-11 | Three-eccentric hard-sealing butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203532777U true CN203532777U (en) | 2014-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320627885.9U Expired - Lifetime CN203532777U (en) | 2013-10-11 | 2013-10-11 | Three-eccentric hard-sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203532777U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405898A (en) * | 2014-11-24 | 2015-03-11 | 河南煜达阀门制造有限公司 | Low-maintenance-rate triple-eccentric butterfly valve |
| CN104405909A (en) * | 2014-11-24 | 2015-03-11 | 河南煜达阀门制造有限公司 | Three-eccentric butterfly valve |
| CN104832664A (en) * | 2015-04-10 | 2015-08-12 | 阀安格水处理***(太仓)有限公司 | Pin column type butterfly plate connecting structure |
-
2013
- 2013-10-11 CN CN201320627885.9U patent/CN203532777U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405898A (en) * | 2014-11-24 | 2015-03-11 | 河南煜达阀门制造有限公司 | Low-maintenance-rate triple-eccentric butterfly valve |
| CN104405909A (en) * | 2014-11-24 | 2015-03-11 | 河南煜达阀门制造有限公司 | Three-eccentric butterfly valve |
| CN104832664A (en) * | 2015-04-10 | 2015-08-12 | 阀安格水处理***(太仓)有限公司 | Pin column type butterfly plate connecting structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140409 |
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| CX01 | Expiry of patent term |