CN100443785C - Two-way sealing butterfly valve with conic floating valve seat - Google Patents
Two-way sealing butterfly valve with conic floating valve seat Download PDFInfo
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- CN100443785C CN100443785C CNB200510132783XA CN200510132783A CN100443785C CN 100443785 C CN100443785 C CN 100443785C CN B200510132783X A CNB200510132783X A CN B200510132783XA CN 200510132783 A CN200510132783 A CN 200510132783A CN 100443785 C CN100443785 C CN 100443785C
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- valve seat
- butterfly
- butterfly plate
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Abstract
The present invention relates to a two-way sealing butterfly valve with a positive cone floating valve seat, which comprises a valve body, a butterfly plate and a floating valve seat, wherein the floating valve seat is arranged at the right part of the inner cavity of the valve body. A movably matching gap is reserved between the outer side surface of the valve seat and the inner side surface of the valve body. The butterfly plate is arranged in the inner cavity of the valve body and mainly composed of a butterfly plate holder, a sealing element and a pressing plate for the sealing element. The pressing plate of the sealing element is fixedly arranged at one side of the butterfly plate holder. The sealing element is clamped between the butterfly plate holder and the pressing plate of the sealing element. The outer circle of the sealing element protrudes out of the edge of the butterfly plate holder and forms the sealing pair of the valve with the inner circle of the floating valve seat. The surface of the inner circle of the floating valve seat is in the shape of the surface of a positive cone. The surface of the outer circle of the sealing element is a positive circular conical surface or a circular arc-shaped surface which has the same or the similar angle of taper as the positive circular conical surface of the inner circle of the floating valve seat. The butterfly valve has the advantages of small size, low cost, less abrasion, long service life, good sealing property, high reliability, convenient maintenance and two-way sealing, which is suitable for various conveying places for fluid media.
Description
Technical field
The present invention relates to a kind of valve, particularly a kind of two-way sealing butterfly valve with conic floating valve seat.
Background technique
Two-way sealing butterfly valve with conic floating valve seat is a kind of novel butterfly valve with two way sealed effect, it allows the media flow of any direction, compare with existing butterfly valve, not only easy to use, volume is little, good airproof performance, reliability height, long service life, manufacturing process is simple, have two way sealed, and have sealing pair variation, applicability wide, can select different sealing pairs for use according to different operating modes.
Existing butterfly valve generally includes valve body, butterfly plate and valve seat, described valve seat is arranged on described body cavity right part, described butterfly plate is arranged in the described body cavity, the interior circle of the cylindrical of butterfly plate and valve seat constitutes the sealing pair of valve, sealing pair center line and valve channel center line are not parallel, complex process, manufacture cost height during the processing sealing pair.Butterfly plate is processed by the monoblock steel plate, or pressing or set lip ring on whole edges of plate, the periphery of steel plate or the periphery of Sealing have just formed the described butterfly plate cylindrical that is used for valve seal, after steel plate periphery or the wearing and tearing of Sealing periphery, must change whole butterfly plate, increase the operation and maintenance cost of butterfly valve thus.This type of butterfly valve seat is fixed, and no float function can only one-way sealing, and sealing pair is single, and applicability is narrow.
Summary of the invention
For overcoming the above-mentioned defective of prior art, the invention provides a kind of two-way sealing butterfly valve with conic floating valve seat, after the butterfly plate cylindrical wearing and tearing of this butterfly valve, only need to change Sealing, do not need to change whole butterfly plate; Valve seat can float, and makes butterfly valve have two way sealed; Sealing pair center line and valve body central lines, simple, the low cost of manufacture of manufacturing process during the processing sealing pair; Have two eccentric structures, good airproof performance.
The present invention realizes that the technological scheme of above-mentioned purpose is: a kind of two-way sealing butterfly valve with conic floating valve seat, comprise valve body, butterfly plate and floating valve seat, described floating valve seat is arranged on described body cavity right part, leave mobile matching gap between the inner side surface of its outer side surface and described valve body, floated to changing valve seat by MEDIA FLOW thereupon.Described butterfly plate is arranged in the described body cavity, it mainly is made of butterfly plate frame, Sealing and Sealing pressing plate, described Sealing pressing plate is fixedly mounted on a side of described butterfly plate frame, described Sealing is sandwiched between described butterfly plate frame and the Sealing pressing plate, its cylindrical exceeds the edge of described butterfly plate frame, with the interior round sealing pair that constitutes valve of described floating valve seat.Butterfly plate center of rotation and sealing pair plane exist off-centre and sealing pair center line also to have another off-centre, make it be two eccentric structures.
The invention has the beneficial effects as follows: because Sealing is clamped on the butterfly plate frame by the Sealing pressing plate, and the Sealing clamping plate can be by bolton on the butterfly plate frame, when needs are changed Sealing, as long as the Sealing pressing plate is unloaded down from the butterfly plate frame, just can carry out the replacing of Sealing easily.Simultaneously butterfly plate has two eccentric structures, make in the open and close process sealing pair friction less, little, the good airproof performance of operational torque.In addition, this independently Sealing is easy to process, can adopt different materials to be processed into different shape (particularly forming the Sealing periphery shape of butterfly plate cylindrical) according to the usage requirement of valve, make valve have better sealing effect, and be adapted to different occasions respectively.Moreover valve seat has float function, though MEDIA FLOW to difference, sealing pair can coincide and seal well, makes this valve have two way sealed.
Description of drawings
Fig. 1 is the overall structure schematic representation of one embodiment of the present invention;
Fig. 2 is the K-K cross-sectional view under a kind of butterfly plate structure of the present invention;
Fig. 3 is the K-K cross-sectional view under the another kind of butterfly plate structure of the present invention;
Fig. 4 is the K-K cross-sectional view under the third butterfly plate structure of the present invention;
Fig. 5 is the K-K cross-sectional view under the 4th kind of butterfly plate structure of the present invention;
Fig. 6 is the K-K cross-sectional view under the 5th kind of butterfly plate structure of the present invention.
Embodiment
Referring to Fig. 1-6, two-way sealing butterfly valve with conic floating valve seat provided by the invention comprises valve body 8, butterfly plate 6 and floating valve seat 7, described floating valve seat is arranged on described body cavity right part, leave mobile matching gap between the inner side surface of its outer side surface and described valve body, described butterfly plate is arranged in the described body cavity, it is mainly by butterfly plate frame 6.1, Sealing 6.2 and Sealing pressing plate 6.3 constitute, described Sealing pressing plate is fixedly mounted on a side of described butterfly plate frame, described Sealing is sandwiched between described butterfly plate frame and the Sealing pressing plate, its cylindrical exceeds the edge of described butterfly plate frame, with the interior round sealing pair that constitutes valve of described floating valve seat.
Described Sealing pressing plate can use bolt 6.4 to be fastened on the described butterfly plate frame usually, can be easy for installation and removal like this.
The inner headed face of described floating valve seat is normal cone face (side of frustum), to improve the reliability that cooperates with described butterfly plate cylindrical sealing surface, float valve seat sealing surface is the positive conical surface simultaneously, simplify manufacturing process, reduced manufacture cost, the cone angle of the positive taper inner headed face of described floating valve seat can be 60 °-20 °, preferred 40 ° ± 5 °.According to the design needs, under certain overall structure, other angular ranges also are feasible, and the present invention does not get rid of and adopts other possibilities at any angle.Described butterfly plate center of rotation and plane, sealing pair place exist a throw of eccentric and sealing pair center line to have a throw of eccentric, because the existence of two throw of eccentric makes this valve have two eccentric structures.
The periphery of described Sealing (periphery of butterfly plate just) can adopt the normal cone face (as Fig. 5-6 shown in) identical with described floating valve seat inner headed face cone angle usually, perhaps adopts arc-shaped surface (shown in Fig. 2-4).
When described Sealing periphery adopted the identical normal cone face of cone angle with described floating valve seat inner headed face, the periphery of butterfly plate was face seal with the inner headed face contact of floating valve seat.
When described Sealing periphery is arc-shaped surface (outward edge that refers to the section of Sealing cylindrical on butterfly plate central axis and plane, butterfly plate arbitrary radius place is shaped as circular arc or is similar to other shapes of any curves of circular arc), the periphery of butterfly plate contacts for line with the inner headed face contact of float valve seat.
Referring to Fig. 2, described Sealing can be that outer surface is ring-like metal steel loop or a nonmetallic ring of semicircle, when adopting metal ring, between this metal ring and the butterfly plate frame bed course can be set.
Referring to Fig. 3, described Sealing can be inside and outside two-layer metal steel loop, described internal layer is a Sealing frame 6.22, sealing part frame is circular, outer surface is that semicircle is ring-like, described outer 6.21 is sealing surface, wraps in the external arc surface of described Sealing frame by sheet material through moulding process, and its outer surface also is that semicircle is ring-like.
Referring to Fig. 4, described Sealing can be the elastic seal ring that is formed by plate stamping, and its outer surface is that semicircle is ring-like.
Referring to Fig. 5, described Sealing can be that outer surface is the metal steel loop or the nonmetallic ring of the positive conical surface, when adopting metal ring, between this metal ring and the butterfly plate frame bed course can be set.
Referring to Fig. 6, described Sealing can be that outer surface is the tinsel 6.23 of the positive conical surface and the stacked ring of non-metal plate 6.24 stacks.
Referring to Fig. 1-6, as a specific embodiment, remaining part of the present invention can adopt such structure: described valve body is provided with the interior step 7.1 of retaining on described floating valve seat right side, the left side of described floating valve seat is with its pressure spring of pressing to the right 12, the center line of circle and the central lines of described body cavity in the floating valve seat, described butterfly plate is fixedly mounted on the valve rod 5, the upper valve rod hole on described valve body top is passed in the valve rod of valve top outside described valve body, insert body cavity, its bearing of trend is vertical with the center line of described body cavity, the left-hand face of described butterfly plate frame is for being fairshaped middle part projection curved surface, butterfly plate frame right lateral surface indent is provided with plurality of strengthening ribs.
Described valve rod drive axis (being the valve rod center line) that butterfly plate rotates to the distance between the butterfly plate center line with equate to the distance between the center line of floating valve seat inner headed face, make the center line of described Sealing periphery in the central lines of valve closing state with described floating valve seat inner headed face, this distance is called radial disbalance; Plane, described sealing pair place (referring to the middle transverse section vertical with center line of periphery) and described body cavity center line are perpendicular, and have certain distance between the valve rod center line, and this distance is called axial off-centre.The inboard of described butterfly plate frame is provided with mounting sleeve, described valve rod passes described mounting sleeve, extend downward the lower valve rod hole of described valve body, adopt bearing pin to link to each other between described valve rod and the butterfly plate frame, the inner chamber longitudinal extension of described valve body, penetrate whole valve body, the two ends, the left and right sides of described valve body are provided with the flange 10 perpendicular to the lumen centers line, the lower valve rod outer end of hole of described valve body is provided with lower flange, be installed with the lower cover 9 of sealing on this flange, described valve body top is provided with upwardly extending joint, the upper end of this joint is provided with upper flange, and described upper valve rod hole penetrates this joint, constitutes the center through hole of this joint, its top is provided with the stuffing box that is enclosed in the valve rod outside, filler 4 is housed in this stuffing box, and is provided with the gland 3 that is pressed on the filler, support 2 is installed on the described upper flange, drive unit 1 is housed on the support, and drive unit is provided with handwheel 11.
Be understandable that, except that the technical characteristics of special qualification, the present invention allows valve integral body and each several part to use for reference or adopts prior art and other possible technology arbitrarily, can produce some different embodiments thus, and these mode of executions are the specific embodiment of the present invention.
Sealing among the present invention can adopt different structures and different materials, form different valve seal types, to be adapted to different purposes, various seal configurations can be selected arbitrarily by the designer according to actual needs, can select specifically described structure in this specification, also can select other structures under prior art or other the possible technology.For the specifically described structure of this specification, can be divided into the line contact by the sealing pair contact type and contact two big classes with face.Line contact requires low, low cost of manufacture, easily makes the manufacturing precision, the Sealing of four kinds of line contacts introducing in this specification is: first kind is semi-circle metal ring (referring to structure shown in Figure 2), because the as a whole ring of Sealing, surface hardness can be done very highly, sealing surface can obtain highi degree of accuracy, low roughness through mill pin processing method, its energy high temperature high voltage resistant, and good airproof performance are adapted to the High Temperature High Pressure occasion; Second kind also is semi-circle metal ring (referring to structure shown in Figure 3), but Sealing is two folded forming of bag, the inside is an interior semicircle arc ring, its surface is smart otherwise high, bread is folded one deck finished product corrosion resistant plate outside it then, its steel surface roughness is low, with pressing method its bag is stacked in interior semicircle arc ring outside, corrosion resistant plate is a sealing surface, and interior semicircle arc ring is a skeleton, and this Sealing accuracy of manufacturing is lower than first kind, manufacture cost is also low than first kind, but sealing surface is a corrosion resistant plate, so hardness is not high, it is applicable to have a meeting, an audience, etc. well under one's control in the high temperature and closes; The third is stainless steel coil (referring to a structure shown in Figure 4), use the steel plate drawing, because it has elasticity, so its form and position tolerance is little to the sealability influence, but its surface roughness requires height, this can guarantee with finished product corrosion resistant plate surface, this Sealing is lower than second kind of cost, make simple, but can not high temperature high voltage resistant, during its only is fit in temperature, the low pressure occasion; The 4th kind is semi-circle nonmetallic ring (referring to structure shown in Figure 2), because nonmetal corrosion-resistant good, good airproof performance is so it is suitable for normal temperature low pressure occasion or corrosion-resistant occasion.
The valve seat of the face contact seal pair that this specification is described also is the positive conical surface, Sealing for the match right circular cone of (angle is identical) of the positive conical surface of valve seat, positive cone is the face contact in the face of positive conical surface contact, and is owing to be that face contacts, so the life-span is long, easily high pressure resistant.Sealing is divided into three kinds: first kind is positive cone metal ring (referring to structure shown in Figure 5), the as a whole ring of Sealing, surface hardness can be done very highly, and sealing surface can obtain highi degree of accuracy, low roughness through mill pin processing method, its can high temperature high voltage resistant, and good airproof performance, life-span are long; Second kind is lamination positive cone composition ring (referring to structure shown in Figure 6), and Sealing is formed by stacking by sheet metal and non-metal board, compares with first kind that its machining accuracy is low, cost is low, good airproof performance, its be fit to in warm mesolow occasion; The third is positive cone nonmetallic ring (referring to a structure shown in Figure 5) because nonmetal corrosion-resistant good, good seal, so its be suitable for normal temperature, in, low pressure occasion or corrosion-resistant occasion.
Interior circle of so-called floating valve seat and inner headed face are meant the inwall that constitutes the hole of media flow passage on the floating valve seat in this specification, described butterfly plate cylindrical or Sealing cylindrical are meant the annular outer rim zone of butterfly plate or Sealing, and periphery is meant the surface of this annular region.
Use during this specification and claims book statement direction position " on ", D score, " left side ", " right side ", only be in order to express easily, be used for distinguishing the relative position at each position, orientation when not representing butterfly valve to use, and the exchange of any two opposite directions does not influence enforcement of the present invention.
Claims (9)
1. two-way sealing butterfly valve with conic floating valve seat, comprise valve body, butterfly plate and floating valve seat, described floating valve seat is arranged on described body cavity right part, leave mobile matching gap between the inner side surface of its outer side surface and described valve body, described butterfly plate is arranged in the described body cavity, it is characterized in that: described butterfly plate is mainly by the butterfly plate frame, Sealing and Sealing pressing plate constitute, described Sealing pressing plate is fixedly mounted on a side of described butterfly plate frame, described Sealing is sandwiched between described butterfly plate frame and the Sealing pressing plate, its cylindrical exceeds the edge of described butterfly plate frame, the interior round sealing pair that constitutes valve with described floating valve seat, described Sealing is two layers a metal steel loop, comprise internal layer and skin, described internal layer is the Sealing frame, is circular, its outer surface is a semi-round ring shape, described skin is a sealing surface, and its outer surface also is a semi-round ring shape, and the inner headed face of described floating valve seat is the normal cone face.
2. two-way sealing butterfly valve with conic floating valve seat as claimed in claim 1, it is characterized in that described valve body is provided with the interior step of retaining on described floating valve seat right side, the left side of described floating valve seat is the pressure spring that it is pressed to the right, the center line of circle and the central lines of described body cavity in the floating valve seat, described butterfly plate is fixedly mounted on the valve rod, the upper valve rod hole on described valve body top is passed in described valve rod top outside valve body, insert body cavity, its bearing of trend is vertical with the center line of described body cavity, the left-hand face of described butterfly plate frame is a curved surface, this curved surface is streamlined, and butterfly plate frame right side is provided with plurality of strengthening ribs.
3. two-way sealing butterfly valve with conic floating valve seat as claimed in claim 2, it is characterized in that described valve rod drive axis that butterfly plate rotates to the distance between the butterfly plate center line with equate to the distance between the center line of floating valve seat inner headed face.
4. two-way sealing butterfly valve with conic floating valve seat as claimed in claim 3 is characterized in that plane, described sealing pair place and body cavity center line are perpendicular, and has a distance between the axis of butterfly plate rotation.
5. two-way sealing butterfly valve with conic floating valve seat as claimed in claim 4, the center line that it is characterized in that described valve rod mutually disjoints with the center line of body cavity, and a distance is arranged between the two.
6. two-way sealing butterfly valve with conic floating valve seat as claimed in claim 5, the center line that it is characterized in that valve rod does not overlap with the center line of described butterfly plate yet, and a distance is also arranged between the two.
7. two-way sealing butterfly valve with conic floating valve seat as claimed in claim 6, it is characterized in that described valve rod center line equals described valve rod center line with the distance between the butterfly plate center line with the distance between the body cavity center line, the inboard of described butterfly plate left sideboard is provided with mounting sleeve.
8. two-way sealing butterfly valve with conic floating valve seat as claimed in claim 7, it is characterized in that described valve rod passes described mounting sleeve, extend downward the lower valve rod hole of described valve body, adopt bearing pin to link to each other between described valve rod and the butterfly plate, the inner chamber longitudinal extension of described valve body, penetrate whole valve body, the two ends, the left and right sides of described valve body are provided with the flange perpendicular to the lumen centers line, the lower valve rod outer end of hole of described valve body is provided with lower flange, be installed with the lower cover of sealing on the described lower flange, described valve body top is provided with upwardly extending joint, and the upper end of this joint is provided with upper flange, and described upper valve rod hole penetrates this joint, constitute the center through hole of this joint, the top in described upper valve rod hole is provided with the stuffing box that is enclosed in the valve rod outside, in this stuffing box filler is housed, and is provided with the gland that is pressed on the filler.
9. two-way sealing butterfly valve with conic floating valve seat as claimed in claim 8 is characterized in that on the described upper flange support being installed, and drive unit is housed on the support, and drive unit is provided with handwheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510132783XA CN100443785C (en) | 2005-12-26 | 2005-12-26 | Two-way sealing butterfly valve with conic floating valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510132783XA CN100443785C (en) | 2005-12-26 | 2005-12-26 | Two-way sealing butterfly valve with conic floating valve seat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1804441A CN1804441A (en) | 2006-07-19 |
| CN100443785C true CN100443785C (en) | 2008-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510132783XA Expired - Fee Related CN100443785C (en) | 2005-12-26 | 2005-12-26 | Two-way sealing butterfly valve with conic floating valve seat |
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| CN (1) | CN100443785C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322212B (en) * | 2013-07-01 | 2015-10-14 | 德尔斯威（厦门）流体控制设备有限公司 | Floating type valve seat thermal butterfly valve |
| CN105864438A (en) * | 2016-06-03 | 2016-08-17 | 凯瑞特阀业有限公司 | Eccentric butterfly valve |
| CN108953629A (en) * | 2018-09-18 | 2018-12-07 | 浙江中科阀门有限公司 | A kind of two-way very stiff and demanding all-metal sealing butterfly valve structure |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3749359A (en) * | 1971-03-24 | 1973-07-31 | Dresser Ind | Valve seat construction |
| US4373543A (en) * | 1981-06-12 | 1983-02-15 | The Duriron Company, Inc. | Fire resistant seat for flow control valve |
| US4944489A (en) * | 1989-08-10 | 1990-07-31 | Gebruder Adams Armaturen U. Apparate Gmbh & Co., K.G. | Rotary valve and seal |
| CN2075283U (en) * | 1990-10-23 | 1991-04-17 | 天津市塘沽阀门厂 | Corrosion resisting eccentricity butterfly valve |
| CN2201530Y (en) * | 1994-09-10 | 1995-06-21 | 刘昌岭 | Hard sealed butterfly bamper with double eccentric metal spherical surface |
| JPH07167310A (en) * | 1993-12-14 | 1995-07-04 | Kubota Corp | Elastic metal seat |
| CN2466437Y (en) * | 2001-02-14 | 2001-12-19 | 长沙市阀门厂 | Non-plane-leakage metal seal pair for metal seal butterfly valve |
| CN2594565Y (en) * | 2002-12-24 | 2003-12-24 | 天津塘沽瓦特斯阀门有限公司 | Eccentric butterfly valve with flangeseal |
| CN1605773A (en) * | 2004-11-16 | 2005-04-13 | 陈国顺 | Hard sealing two-way disc valve |
| CN2903595Y (en) * | 2005-12-26 | 2007-05-23 | 陈国顺 | Positive pyramid float valve seat dual direction sealing butterfly valve |
-
2005
- 2005-12-26 CN CNB200510132783XA patent/CN100443785C/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3749359A (en) * | 1971-03-24 | 1973-07-31 | Dresser Ind | Valve seat construction |
| US4373543A (en) * | 1981-06-12 | 1983-02-15 | The Duriron Company, Inc. | Fire resistant seat for flow control valve |
| US4944489A (en) * | 1989-08-10 | 1990-07-31 | Gebruder Adams Armaturen U. Apparate Gmbh & Co., K.G. | Rotary valve and seal |
| CN2075283U (en) * | 1990-10-23 | 1991-04-17 | 天津市塘沽阀门厂 | Corrosion resisting eccentricity butterfly valve |
| JPH07167310A (en) * | 1993-12-14 | 1995-07-04 | Kubota Corp | Elastic metal seat |
| CN2201530Y (en) * | 1994-09-10 | 1995-06-21 | 刘昌岭 | Hard sealed butterfly bamper with double eccentric metal spherical surface |
| CN2466437Y (en) * | 2001-02-14 | 2001-12-19 | 长沙市阀门厂 | Non-plane-leakage metal seal pair for metal seal butterfly valve |
| CN2594565Y (en) * | 2002-12-24 | 2003-12-24 | 天津塘沽瓦特斯阀门有限公司 | Eccentric butterfly valve with flangeseal |
| CN1605773A (en) * | 2004-11-16 | 2005-04-13 | 陈国顺 | Hard sealing two-way disc valve |
| CN2903595Y (en) * | 2005-12-26 | 2007-05-23 | 陈国顺 | Positive pyramid float valve seat dual direction sealing butterfly valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1804441A (en) | 2006-07-19 |
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Assignee: SUNGO VALVES GROUP CO., LTD. Assignor: Chen Guoshun Contract fulfillment period: 2009.3.10 to 2014.7.9 contract change Contract record no.: 2009330001232 Denomination of invention: Two-way sealing butterfly valve with conic floating valve seat Granted publication date: 20081217 License type: Exclusive license Record date: 2009.6.1 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.3.10 TO 2014.7.9; CHANGE OF CONTRACT Name of requester: SHANGZHENG VALVE GROUP CO., LTD. Effective date: 20090601 |
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