CN107300018B - A kind of million secondary seal valve seats - Google Patents
A kind of million secondary seal valve seats Download PDFInfo
- Publication number
- CN107300018B CN107300018B CN201710669682.9A CN201710669682A CN107300018B CN 107300018 B CN107300018 B CN 107300018B CN 201710669682 A CN201710669682 A CN 201710669682A CN 107300018 B CN107300018 B CN 107300018B
- Authority
- CN
- China
- Prior art keywords
- valve seat
- component
- sealing body
- integrally formed
- energization component
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/222—Shaping of the valve member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
Abstract
The present invention relates to a kind of million secondary seal valve seats, it includes: elastic energization component, and the elasticity energization component is circular ring shape；Valve seat sealing body, the valve seat sealing body include being coated on elastomeric seal portions, the flat seal portion being integrally formed on the inside of the elastomeric seal portions, the wedge-shaped fixed part being integrally formed on the inside of the flat seal portion and the deflection deformation portion being integrally formed between the elastomeric seal portions and the flat seal portion of the elastic energization component outer surface.There is elastomeric seal portions, flat seal portion and the isostructural valve seat sealing body of wedge-shaped fixed part by being arranged outside elastic energization component, so that the valve for being equipped with time valve seat rolls low friction, low torque in switching process；It is applied widely, long service life；Other valves of more same rated value, with lighter weight and smaller installation space；Maintenance free, operation cost are low.
Description
Technical field
The present invention relates to a kind of seal valve seats, and in particular to a kind of million secondary seal valve seats for butterfly valve.
Background technique
Butterfly valve refers to that closure member (flap or butterfly plate) is disk, and one kind of open and close is reached around valve shaft rotation
Valve mainly plays cutting and throttling action on pipeline.Butterfly valve opening and closing element is a discoidal butterfly plate, around its own in valve body
Axis rotation, to achieve the purpose that opening and closing or adjusting.Butterfly valve standard-sized sheet closes typically less than 90 ° to complete, butterfly valve and butterfly bar sheet
Body does not have self-lock ability, for the positioning of butterfly plate, to install worm reducer additional on valve rod.
Domestic existing butterfly valve hard sealing structure, is mostly the corresponding hard alloy metal of built-up welding on valve, this
Structure has certain limitation, and traditional bead-welding technology is relatively cumbersome in production process, and built-up welding is also easy to produce crackle, loose, gas
The defects of hole, causes the delay of reworked processing and production cycle.As in applying working condition at the scene, caused by sealing surface scuffing let out it is plain
The defects of, in repair process will entire valve take apart reparation, this process will expend a large amount of manpower and material resources.
Summary of the invention
A kind of million secondary seal valve seats are provided the invention aims to overcome the deficiencies in the prior art.
In order to achieve the above objectives, the technical scheme adopted by the invention is as follows: a kind of million secondary seal valve seats, it includes:
Elastic energization component, the elasticity energization component is circular ring shape；
Valve seat sealing body, the valve seat sealing body include the elastic packing for being coated on the elastic energization component outer surface
Portion, the flat seal portion being integrally formed on the inside of the elastomeric seal portions, the wedge being integrally formed on the inside of the flat seal portion
Shape fixed part and the deflection deformation portion being integrally formed between the elastomeric seal portions and the flat seal portion.
Optimally, the elastic energization component is memory rubber, and the memory rubber includes the component of following parts by weight:
The polyolefin elastomer is compounded by ethylene-octene copolymer or/and ethylene-butyl acrylate copolymer,
Its hardness is 80~90A.
Further, the valve seat sealing body includes the component of following parts by weight:
The polymeric matrix is the mixture that polyamide and polyphenylene sulfide are 1: 1 composition in mass ratio, the lubricant
For the mixture of one or more compositions in zinc stearate, PE wax, PP wax and stearic acid.
Further, the nano-titanium dioxide is modified nano-titanium dioxide.
Due to the above technical solutions, the present invention has the following advantages over the prior art: million grades of the invention
Seal valve seat has the knots such as elastomeric seal portions, flat seal portion and wedge-shaped fixed part by being arranged outside elastic energization component
The valve seat sealing body of structure, so that the valve for being equipped with time valve seat rolls low friction, low torque in switching process；It is applicable in model
Enclose wide, long service life；Other valves of more same rated value, with lighter weight and smaller installation space；Without dimension
Shield, operation cost are low.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of million secondary seal valve seats of the invention.
Specific embodiment
Million secondary seal valve seats of the invention, as shown in Figure 1, it mainly includes elastic energization component 1 and valve seat sealing body
2。
Wherein, elastic energization component 1 is circular ring shape, its ring body section is circle, generallys use rubber material；Valve seat is close
Envelope body 2 be then coated on elastic 1 outer surface of energization component elastomeric seal portions 21 (elastomeric seal portions 21 also be in circular ring shape,
It is completely encapsulated in the outer surface of elastic energization component 1), be integrally formed in the flat seal portion 22 of the inside of elastomeric seal portions 21
(flat seal portion 22 is in plane locating for elastomeric seal portions 21 and the direction as locating for the 21 inside heart thereto of elastomeric seal portions
Extend), be integrally formed in the inside of flat seal portion 22 wedge-shaped fixed part 24 (wedge-shaped fixed part 24 i.e. inclined-plane sealing, it by
Direction locating for the heart extends the medial surface in flat seal portion 22 thereto；The lateral surface width of wedge-shaped fixed part 24 is less than its inside
Face width) and it is integrally formed in deflection deformation portion 23 between the peaceful face seal portion 22 of elastomeric seal portions 21, deflection deformation portion
23 make the peaceful face seal portion 22 of elastomeric seal portions 21 be connected smoothly.
For elastic energization component 1 it is preferable to use the rubber material with elasticity and memory function, it includes following parts by weight
Component: 20~30 parts of natural rubber；10~30 parts of polyurethane resin；5~10 parts of butadiene rubber；Polyolefin elastomer 5~10
Part；10~15 parts of polyethylene glycol (model PEG800~1500)；0.5~1 part of crosslinking agent；1~5 part of nano-titanium dioxide；Institute
State polyolefin elastomer by ethylene-octene copolymer (POE, Dupont) or/and ethylene-butyl acrylate copolymer (EBA,
A Kema 3200 etc.) it compounds, hardness is 80~90A；It is preferable to use polyvinyl pyrrolidone modifieds for nano-titanium dioxide
Nano-titanium dioxide.Natural rubber using conventional, such as STR10, STR20, STRCV, SMR20, SVR3L, SVR10 and
One of SVR20 etc.；Polyurethane resin be thermoplastic polyurethane elastomer rubber (TPU), as BASF C78A, C80A,
One of C85A, C88A and C90A etc.；Butadiene rubber is using routine, such as BR9000, BR9175, BR9075.It hands over
Connection agent can select ethyl orthosilicate, methyl orthosilicate, trimethoxy silane, hydroxy-ethyl acrylate, hydroxypropyl acrylate, methyl
In hydroxy-ethyl acrylate, hydroxy propyl methacrylate and divinylbenzene and p-bisbenzene ethylene hexamethylene tetramine salt
It is a kind of, it is preferable to use the poly- p-chloromethyl styrene six of p-bisbenzene ethylene hexamethylene tetramine salt or low polymerization degree is sub-
Tetramine salt.Valve seat sealing body 2 it is preferable to use low friction, self-lubricating, deflection polymer material, including following parts by weight
Several component: 40~50 parts of polymeric matrix；10~15 parts of polyethylene glycol (model PEG800~1500)；Lubricant 5~10
Part；1~5 part of reinforcing fiber；The polymeric matrix is the mixture that polyamide and polyphenylene sulfide are 1: 1 composition in mass ratio,
The lubricant be zinc stearate, PE wax, in PP wax and stearic acid one or more compositions mixture；Reinforcing fiber is preferably
One of glass fibre, polyester fiber, nylon fiber, polypropylene fibre and polyimide fiber.
The preferred embodiment of the invention is described in detail below.
Embodiment 1
Million secondary seal valve seats as shown in Figure 1, it mainly includes elastic energization component 1 and valve seat sealing body 2.
Wherein, elastic energization component 1 is circular ring shape, its ring body section is circle；Valve seat sealing body 2 is then coated on
(elastomeric seal portions 21 are also in circular ring shape to the elastomeric seal portions 21 of elastic 1 outer surface of energization component, it is completely encapsulated in elastic increasing
Can element 1 outer surface), being integrally formed in the flat seal portion 22 of the inside of elastomeric seal portions 21, (flat seal portion 22 is in bullet
Property sealing 21 locating in plane and the direction as locating for the 21 inside heart thereto of elastomeric seal portions extends), be integrally formed in it is flat
The inside of face seal portion 22 wedge-shaped fixed part 24 (wedge-shaped fixed part 24 is inclined-plane sealing, it by flat seal portion 22 inside
Extend towards direction locating for its center；The lateral surface width of wedge-shaped fixed part 24 is less than its medial surface width) and a bodily form
At the deflection deformation portion 23 between the peaceful face seal portion 22 of elastomeric seal portions 21, deflection deformation portion 23 makes elastomeric seal portions 21
Peaceful face seal portion 22 is connected smoothly.
Elastic energization component 1 includes the component of following parts by weight: 20 parts of natural rubber STR10；BASF C78A30
Part；10 parts of BR9000；Polyolefin elastomer (POE and A Kema 3200 in mass ratio 1: 1 are compounded, and hardness is 80~90A) 10
Part；15 parts of polyethylene glycol (model PEG800)；0.5 part of divinylbenzene；5 parts of (preparation methods of PVP modified nano-titanium dioxide
With reference to<text of the Research on Surface Modification of nano-titanium dioxide>one)；Specifically the preparation method comprises the following steps: the above-mentioned each component of formula ratio is distinguished
It is added in extruder and is stirred mixing, and extrusion molding is carried out using corresponding mold.Valve seat sealing body 2 includes following
The component of parts by weight: 40 parts of polymeric matrix (mass ratio of DuPont PA6 and hGR20 are 1: 1)；15 parts of (types of polyethylene glycol
Number be PEG800)；10 parts of PE wax；5 parts of glass fibre (short fine 1~3mm)；Specifically the preparation method comprises the following steps: by the above-mentioned each of formula ratio
Component, which is separately added into extruder, carries out extruding pelletization, and the corresponding mold of importing (is equipped with above-mentioned after feeding grain is thermally formed fluid
Elastic energization component 1) in it is cooling, so that its is wrapped up elastic energization component 1 (above-mentioned heating temperature is using conventional).
Embodiment 2
It is and almost the same in embodiment 1 the present embodiment provides a kind of million secondary seal valve seats, unlike: bullet
Property energization component 1 including following parts by weight component: 30 parts of natural rubber STR10；C78A10 parts of BASF；BR9000 5
Part；5 parts of polyolefin elastomer (POE and A Kema 3200 in mass ratio 1: 1 are compounded, and hardness is 80~90A)；10 parts of polyethylene glycol
(model PEG800)；1 part of divinylbenzene；1 part of PVP modified nano-titanium dioxide；Valve seat sealing body 2 includes following parts by weight
Several component: 50 parts of polymeric matrix (mass ratio of DuPont PA6 and hGR20 are 1: 1)；10 parts of (models of polyethylene glycol
PEG800)；5 parts of PE wax；1 part of glass fibre (short fine 1~3mm).
Embodiment 3
It is and almost the same in embodiment 1 the present embodiment provides a kind of million secondary seal valve seats, unlike: bullet
Property energization component 1 including following parts by weight component: 25 parts of natural rubber STR10；C78A20 parts of BASF；BR9000 8
Part；8 parts of polyolefin elastomer (POE and A Kema 3200 in mass ratio 1: 1 are compounded, and hardness is 80~90A)；12 parts of polyethylene glycol
(model PEG800)；0.8 part of divinylbenzene；3 parts of PVP modified nano-titanium dioxide；Valve seat sealing body 2 includes following weight
The component of number: 45 parts of polymeric matrix (mass ratio of DuPont PA6 and hGR20 are 1: 1)；12 parts of (models of polyethylene glycol
PEG800)；8 parts of PE wax；3 parts of glass fibre (short fine 1~3mm).
Embodiment 4
It is and almost the same in embodiment 3 the present embodiment provides a kind of million secondary seal valve seats, unlike: bullet
The crosslinking agent that property energization component 1 uses is the poly- p-chloromethyl styrene hexamethylene tetramine salt of low polymerization degree, the degree of polymerization 100
~250.
Embodiment 5
It is and almost the same in embodiment 3 the present embodiment provides a kind of million secondary seal valve seats, unlike: it receives
Rice titanium dioxide is polyvinyl pyrrolidone modified nano-titanium dioxide.
Comparative example 1
The present embodiment provides almost the same in a kind of seal valve seat, with embodiment 3, unlike: polyolefin elastic
POE is used only in body.
Comparative example 2
The present embodiment provides almost the same in a kind of seal valve seat, with embodiment 3, unlike: polymeric matrix
Using only hGR20.
Comparative example 3
The present embodiment provides almost the same in a kind of seal valve seat, with embodiment 3, unlike: elastic energization member
Part 1 does not contain polyolefin elastomer and polyethylene glycol；Valve seat sealing body 2 does not contain polyethylene glycol yet.
Seal valve seat in embodiment 1-5, comparative example 1-3 is tested for the property, test result is shown in Table 1.
The performance test table of 1 embodiment 1-5 of table, seal valve seat in comparative example 1-3
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (3)
1. a kind of million secondary seal valve seats, which is characterized in that it includes:
Elastic energization component (1), the elasticity energization component (1) are circular ring shape；The elasticity energization component (1) is memory rubber
Glue, the memory rubber include the component of following parts by weight:
The polyolefin elastomer is compounded by ethylene-octene copolymer and ethylene-butyl acrylate copolymer, and hardness is
80~90A；
Valve seat sealing body (2), the valve seat sealing body (2) are coated on the elasticity of described elastic energization component (1) outer surface
Sealing (21), the flat seal portion (22) being integrally formed on the inside of the elastomeric seal portions (21) are integrally formed in described put down
Wedge-shaped fixed part (24) on the inside of face seal portion (22) and it is integrally formed in the elastomeric seal portions (21) and the plane is close
Deflection deformation portion (23) between envelope portion (22).
2. million secondary seals valve seat according to claim 1, it is characterised in that: the valve seat sealing body (2) include with
The component of lower parts by weight:
The polymeric matrix is the mixture that polyamide and polyphenylene sulfide are 1: 1 composition in mass ratio, and the lubricant is hard
The mixture of one or more compositions in resin acid zinc, PE wax, PP wax and stearic acid.
3. million secondary seals valve seat according to claim 1, it is characterised in that: the nano-titanium dioxide is that modification is received
Rice titanium dioxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710669682.9A CN107300018B (en) | 2017-07-28 | 2017-07-28 | A kind of million secondary seal valve seats |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710669682.9A CN107300018B (en) | 2017-07-28 | 2017-07-28 | A kind of million secondary seal valve seats |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107300018A CN107300018A (en) | 2017-10-27 |
| CN107300018B true CN107300018B (en) | 2019-03-08 |
Family
ID=60133450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710669682.9A Active CN107300018B (en) | 2017-07-28 | 2017-07-28 | A kind of million secondary seal valve seats |
Country Status (1)
| Country | Link |
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| CN (1) | CN107300018B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5427354A (en) * | 1994-06-03 | 1995-06-27 | Keystone International Holdings Corp. | Valve assembly |
| DE4424122C2 (en) * | 1994-07-08 | 1999-06-10 | Xomox Int Gmbh | Butterfly valve |
| CN2339811Y (en) * | 1998-05-22 | 1999-09-22 | 王陆军 | Sealing valve-seat suitable for spherical butterfly |
| CN201443612U (en) * | 2009-07-07 | 2010-04-28 | 宁津美华工业有限公司 | Double-eccentric high-performance butterfly valve seat |
| CN202140587U (en) * | 2011-05-26 | 2012-02-08 | 范建国 | Tetrafluoroethylene valve seat device for marine stainless steel eccentric butterfly valve |
| CN103075525A (en) * | 2013-01-10 | 2013-05-01 | 淄博汇华阀业有限公司 | Elastic valve seat adapting along with pressure change |
| CN204042035U (en) * | 2014-08-15 | 2014-12-24 | 伯特利阀门集团有限公司 | A kind of butterfly valve seal is secondary |
| CN105860159B (en) * | 2016-06-02 | 2018-11-16 | 上海明凤汽车科技有限公司 | Memory rubber composition, preparation method and applications |
-
2017
- 2017-07-28 CN CN201710669682.9A patent/CN107300018B/en active Active
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| Publication number | Publication date |
|---|---|
| CN107300018A (en) | 2017-10-27 |
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