CN203880111U - Wear resisting butterfly valve preventing seawater corrosion - Google Patents
Wear resisting butterfly valve preventing seawater corrosion Download PDFInfo
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- CN203880111U CN203880111U CN201420306316.9U CN201420306316U CN203880111U CN 203880111 U CN203880111 U CN 203880111U CN 201420306316 U CN201420306316 U CN 201420306316U CN 203880111 U CN203880111 U CN 203880111U
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- valve
- butterfly
- valve rod
- fluid passage
- butterfly plate
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- 238000005260 corrosion Methods 0.000 title claims abstract description 60
- 239000013535 sea water Substances 0.000 title claims abstract description 48
- 230000007797 corrosion Effects 0.000 title claims abstract description 38
- 239000012530 fluid Substances 0.000 claims abstract description 49
- 238000007789 sealing Methods 0.000 claims abstract description 42
- 238000000576 coating method Methods 0.000 claims abstract description 39
- 239000011248 coating agent Substances 0.000 claims abstract description 34
- 239000000919 ceramic Substances 0.000 claims abstract description 11
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 9
- 239000011701 zinc Substances 0.000 claims abstract description 9
- 239000000565 sealant Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 19
- 239000002131 composite material Substances 0.000 claims description 12
- 239000010935 stainless steel Substances 0.000 claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 8
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 7
- 230000002401 inhibitory effect Effects 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 2
- 238000009991 scouring Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- 230000007547 defect Effects 0.000 description 6
- 239000010410 layer Substances 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- 229910000975 Carbon steel Inorganic materials 0.000 description 5
- 239000010962 carbon steel Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000005524 ceramic coating Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910000885 Dual-phase steel Inorganic materials 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 208000034189 Sclerosis Diseases 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000013036 cure process Methods 0.000 description 2
- 238000010612 desalination reaction Methods 0.000 description 2
- 239000002355 dual-layer Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000003755 preservative agent Substances 0.000 description 2
- 230000002335 preservative effect Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 241000370738 Chlorion Species 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
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- Lift Valve (AREA)
Abstract
The utility model discloses a wear resisting butterfly valve preventing seawater corrosion. The wear resisting butterfly valve comprises a valve body, a valve rod and a butterfly plate, a fluid channel and a valve channel are arranged in the valve body, the butterfly plate is located in the fluid channel, a sealing face is formed between the butterfly plate and the inner wall of the fluid channel, one end of the valve rod penetrates through the valve channel and is fixedly connected with the butterfly plate, the outer surface of the valve body is sprayed with a zinc anticorrosive coating, the inner wall of the fluid channel and the outer surface of the butterfly plate are both coated with ceramic corrosion resisting coatings, and the outsides of the corrosion resisting coatings are brushed with sealant coatings. The outer surface of the valve body is sprayed with the zinc anticorrosive coating, the outer surface of the butterfly plate and the inner wall of the fluid channel in the valve body are coated with the ceramic corrosion resisting coatings, hole sealing treatment is carried out on the corrosion resisting coatings, corrosion preventing, hardening and hole sealing treatment is carried out on the valve, the problem that the seawater corrosion resisting performance and the gravel scouring and wear resisting performance of the butterfly valve are poor is solved, and the service life of the butterfly valve in the seawater industry is prolonged.
Description
Technical field
The utility model belongs to valve technology field, especially a kind of wear-resisting butterfly valve of anti-seawater corrosion.
Background technique
In recent years, along with the development of desalination technology, the marine industries development such as the construction of the foundation of coastal nuclear power and thermal power plant and expansion, offshore platform and seabed tunnel construction rapidly.Along with the development of marine industries, also become a kind of inevitable trend as the continuous growth of the demand of the sea water resistance valve of its important auxiliary products.Especially seawater butterfly valve, because its open-close convenient having is rapid, laborsaving, fluid resistance is little, simple in structure, extensive use in the heavy caliber operating mode of advantage in the industries such as desalination of sea water, power station cooled with seawater, marine oil and gas such as volume is little, lightweight.
But due to the special etching characteristic of seawater, the content of its chloride ion content and oxygen is very high, chlorion can destroy passivating film and hinder passivating film and generate, and produce under given conditions stress corrosion, most metals is very little in seawater anode polarization retardance, and rate of corrosion is quite high.Meanwhile, in seawater, contain a large amount of sand grains, under the flow velocity effect of seawater, relevant device is caused and washed away greatly and wearing and tearing, reduce working life; Common butterfly valve cannot adapt to above-mentioned marine industries.
Stock trick art staff development the special butterfly valve of seawater of seawater corrosion resistance and erosive wear, if Chinese patent notice of authorization number is CN201121720Y " a kind of seawater butterfly valve ", it comprises valve body, valve seat, seal ring, butterfly plate, pressing plate and valve shaft, seal ring is screwed on butterfly plate by pressing plate, valve seat is fixed by screws on valve body, and the material of valve body, butterfly plate is carbon steel, and surface applies corrosion resistance coating, the material of valve shaft, valve seat, pressing plate is dual phase steel, and corrosion resistance coating is ceramic coating.It has applied corrosion resistance coating in valve body surface and butterfly plate surface the seawater butterfly valve of this structure, strengthened the seawater corrosion resistance ability of butterfly valve, but this butterfly valve still exists following problem:
1. exist because this ceramic coating has small gap after covering on valve body and butterfly plate surface, especially coating is coated with thicklyer or uses after a period of time, and this gap can become greatly gradually, thereby causes the inefficacy of this ceramic coating;
2. though there is anti-corrosion coating on the surface of valve body and butterfly plate, valve body inner flow passage surface is uncoated anti-corrosion coating, causes the defect a little less than the anti-corrosion and scour resistance of runner;
3. though the material of valve shaft, valve seat and pressing plate is dual phase steel, there is effect against corrosion, but its face that is tightly connected is each other very weak, as being tightly connected by plain bushing and seal ring between valve shaft Yu Fa road, its weak strength, cannot bear washing away of a large amount of seawater for a long time;
Moreover, the sealing surface between butterfly plate and valve flowing channel, because its seawater scouring power of bearing is larger, common rubber seal is very easily damaged, working life is very short.
Model utility content
In order to overcome the deficiencies in the prior art, it is a kind of than the wear-resisting butterfly valve of the anti-seawater corrosion of the anti-corrosion better effects if of prior art, longer service life that the utility model provides.
To achieve these goals, the technical solution adopted in the utility model is: a kind of wear-resisting butterfly valve of anti-seawater corrosion, comprise valve body, valve rod and butterfly plate, in valve body, be provided with He Fa road, fluid passage, butterfly plate in fluid passage and and fluid passage inwall between form sealing surface, valve rod one end is fixedly connected with butterfly plate through valve road, it is characterized in that: described valve outer surface spray is provided with zinc corrosion-inhibiting coating, fluid passage inwall, butterfly plate outer surface are coated with ceramic anti-corrosion coating, and described anti-corrosion coating is brushed with one deck sealant coating outward.
In said structure, valve outer surface EFI one deck zinc corrosion-inhibiting coating valve outer surface is carried out to preservative treatment, convection cell vias inner walls simultaneously, butterfly plate outer surface applies one deck aluminium oxide ceramics or aluminium titanium pottery anti-corrosion coating, it is carried out to cure process, strengthen its anti-seawater corrosion ability, above-mentioned butterfly plate is to adopt carbon steel base material to make, and ceramic coated on this base material, in order to extend the working life of this anti-corrosion coating, be brushed with one deck sealant at its skin, it is penetrated in Interlaminar Crack on anti-corrosion coating or finedraw fills crackle or finedraw, reinforced company's knotting strength, extend the working life of this anti-corrosion coating, first and second defects in prior art are overcome.
As further setting of the present utility model, described fluid passage inwall is provided with the ring limit projection towards fluid passage central axis projection, described ring limit projection has the sphenoid surface tilting towards fluid passage central axis, and true dip direction is formed slopely ring limit projection by the outlet end of fluid passage towards the entry end of fluid passage and is less than the structure of ring limit projection towards the aperture of the end face of fluid passage outlet towards the aperture of one end of fluid passage entrance, described ring limit projection is connected to form buffer table terrace towards sidewall and the fluid passage inwall of entrance one end, fluid passage, interface between described sphenoid surface and butterfly plate forms sealing surface.
In said structure, the frustum structure that this ring limit projection cross section structure just arranges as hollow, its hollow wall is the sphenoid surface structure setting parallel with frustum outer wall, the setting of this structure has the pressure to butterfly plate while reducing sea washes, due to this sphenoid surface by entry end towards the outlet end trend that is inclined upwardly, when seawater is when entry end impacts butterfly plate, seawater impacts upward along sphenoid surface, impact force is directed to and is impacted on sphenoid surface, and then reduced it to butterfly plate impact force down; In addition, the setting of above-mentioned buffer table terrace, also can play certain buffer function to the seawater pouring, and has avoided seawater directly washing away sealing surface; Extend the service time of sealing surface, overcome the 3rd defect in prior art.
As further setting of the present utility model, described butterfly plate comprises mainboard face, the outward edge of mainboard face is extended with the sealed end that forms sealing configuration with described sphenoid surface, described sealed end comprises the convex globoidal coordinating with described sphenoid surface, described convex globoidal is connected with the transition of described mainboard face by one section of plane of inclination, between described plane of inclination and described sphenoid surface, forms angle.
In said structure, the angle gap between this plane of inclination and sphenoid surface has the effect that guiding seawater impacts towards annular nib, reduces directly washing away butterfly plate.
As further setting of the present utility model, one end that described butterfly plate is connected with sphenoid surface offers and is embedded groove, be embedded composite seal is installed in groove, described composite seal comprises the hard skeleton of being made up of titanium alloy or two-phase stainless Steel material, and described hard skeleton outer surface is provided with rubber seal.
In said structure, this composite seal, owing to there being the support of hard skeleton, has been strengthened the intensity of the sealing surface between butterfly plate and sphenoid surface greatly, has strengthened the shock resistance ability to bear of sealing face, has further overcome the 3rd defect relating in prior art.
As further setting of the present utility model, described rubber seal comprises respectively and the first Sealing and the second Sealing that are embedded groove both sides inwall butt, and described hard skeleton forms sandwich sandwich structure between the first Sealing and the second Sealing.
In said structure, composite seal is the setting of sandwich sandwich structure, is convenient to install.
As further setting of the present utility model, described valve rod is connected with butterfly plate by pressing plate, described butterfly plate offers screens groove towards one end of described pressing plate, described pressing plate comprises pressing plate body, pressing plate body has the butt end face with butterfly plate laminating, the butt end face of described pressing plate is provided with outstanding fixture block, and described fixture block is embedded in screens groove, and the other end that described pressing plate is provided with fixture block is relatively provided with the boss coordinating with described valve rod.
In said structure, pressing plate closes by the screens groove card establishing of fixture block and butterfly plate, has strengthened degree of being connected firmly between the two, and pressing plate body also has the butt end face of fitting with butterfly plate simultaneously, make the mounting point between pressing plate and butterfly plate accurate, avoid occurring the phenomenon of the installation dislocation such as inclination and offset.
As further setting of the present utility model, described valve rod comprises upper valve rod and the lower valve rod of coaxial setting, described valve road comprises and coordinates respectively Shang Fa Dao Hexiafa road with upper valve rod and lower valve rod, the other end that described pressing plate is provided with fixture block is relatively provided with upper shaft hole seat and lower shaft hole seat, described upper valve rod is connected with upper shaft hole seat and by screw, upper valve opening and butterfly plate is fixed through valve road, described lower valve rod is arranged in lower shaft hole seat and by screw, lower valve rod and butterfly plate is fixed, and described upper shaft hole seat and lower shaft hole seat coaxially arrange.
In said structure, by valve rod subsection setup, the one section material corresponding with butterfly plate mainboard face in the middle of can saving compared with common one-part form valve rod, saves cost.
As further setting of the present utility model, between described upper valve rod Yu Shangfa road and between lower valve rod Yu Xiafa road, be respectively equipped with the hard lining that two phase stainless steel material is made, between described hard lining and upper valve rod and between hard lining and lower valve rod, be respectively equipped with double-layer rubber circle.
In said structure, between upper valve rod Yu Shangfa road and lower valve rod Yu Xiafa road, be inlaid with two-phase stainless steel sleeve, reach anticorrosion object, because lining and valve rod are hard material, therefore be provided with respectively the rubber ring of Dual-layer structure between hard lining and upper valve rod or lower valve rod, improve sealability.
Adopt such scheme, the utility model is at valve outer surface spraying zinc anticorrosive coat, in butterfly plate outer surface and valve body, fluid passage inwall and butterfly plate outer surface are coated with ceramic anti-corrosion coating, and anti-corrosion coating is carried out to sealing of hole processing, valve is carried out to anticorrosion, sclerosis, sealing of hole processing, solve butterfly valve sea water corrosion resistant poor and be subject to gravel to wash away the poor problem of abrasion resistance properties, improved the working life of butterfly valve in seawater industry.In addition, sealing surface between butterfly plate and fluid passage inwall adopts composite seal, its hard skeleton is fixed in titanium alloy hard skeleton on butterfly plate by the welding method first built-up welding one deck transition layer on butterfly plate carbon steel base material that adopts built-up welding titanium alloy again, improves the firm performance of this junction surface.Moreover, between valve rod Yu Fa road by having improved the anticorrosion antiwear performance between valve rod Yu Fa road coordinating of hard lining and double-layer rubber circle.
Below in conjunction with accompanying drawing, the utility model is further described.
Brief description of the drawings
Accompanying drawing 1 is the structure sectional view of the utility model specific embodiment plan view state;
Accompanying drawing 2 is the structure sectional view of the utility model specific embodiment plan view state;
Accompanying drawing 3 is the structure sectional view of the utility model specific embodiment valve body;
Accompanying drawing 4 is the partial enlarged drawing of the utility model specific embodiment accompanying drawing 1.
Embodiment
Specific embodiment of the utility model is the wear-resisting butterfly valve of anti-seawater corrosion as Figure 1-4, comprise valve body 1, valve rod 2 and butterfly plate 3, in valve body 1, be provided with 11He Fa road, fluid passage 12, butterfly plate 3 in fluid passage 11 and and fluid passage 11 inwalls between form sealing surface 5, valve rod 2 one end are fixedly connected with butterfly plate 3 through valve road 12, valve body 1 outer surface spray is provided with zinc corrosion-inhibiting coating, fluid passage 11 inwalls, butterfly plate 3 outer surfaces are coated with ceramic anti-corrosion coating, and anti-corrosion coating is brushed with one deck sealant coating outward.Valve body 1 outer surface EFI one deck zinc corrosion-inhibiting coating valve body 1 outer surface is carried out to preservative treatment, convection cell passage 11 inwalls simultaneously, butterfly plate 3 outer surfaces apply one deck aluminium oxide ceramics or aluminium titanium pottery anti-corrosion coating, it is carried out to cure process, strengthen its anti-seawater corrosion ability, above-mentioned butterfly plate 3 is to adopt carbon steel base material to make, and ceramic coated on this base material, in order to extend the working life of this anti-corrosion coating, be brushed with one deck sealant at its skin, it is penetrated in Interlaminar Crack on anti-corrosion coating or finedraw fills crackle or finedraw, reinforced company's knotting strength, extend the working life of this anti-corrosion coating.
Above-mentioned fluid passage 11 inwalls are provided with towards the ring limit projection 111 of fluid passage 11 central axis projections, ring limit projection 111 has the sphenoid surface 112 tilting towards fluid passage 11 central axis, and true dip direction is formed slopely towards the entry end 11a of fluid passage 11 ring limit projection 111 is less than ring limit projection 111 and exports towards fluid passage 11 aperture of the end face of 11b structure towards the aperture of one end of fluid passage 11 entrance 11a by the outlet end 11b of fluid passage 11, ring limit projection 111 is connected to form buffer table terrace 113 towards sidewall and fluid passage 11 inwalls of 11 entrance 11a one end, fluid passage, interface between sphenoid surface 112 and butterfly plate 3 forms sealing surface 5.The frustum structure that these ring limit projection 111 cross section structures just arrange as hollow, its hollow wall is the sphenoid surface 112 structure settings parallel with frustum outer wall, the setting of this structure has the pressure to butterfly plate 3 while reducing sea washes, due to this sphenoid surface 112 by entry end 11a towards the outlet end 11b trend that is inclined upwardly, when seawater is when entry end 11a impacts butterfly plate 3, seawater impacts upward along sphenoid surface 112, impact force is directed to and is impacted on sphenoid surface 112, and then reduced it to butterfly plate 3 impact force down; In addition, the setting of above-mentioned buffer table terrace 113, also can play certain buffer function to the seawater pouring, and has avoided seawater directly washing away sealing surface 5; Extend the service time of sealing surface 5, overcome the 3rd defect in prior art.
Above-mentioned butterfly plate 3 comprises mainboard face 31, the outward edge of mainboard face 31 is extended with the sealed end 32 that forms sealing configuration with sphenoid surface 112, sealed end 32 comprises the convex globoidal 321 coordinating with sphenoid surface 112, convex globoidal 321 is connected with 31 transition of mainboard face by one section of plane of inclination 322, between plane of inclination 322 and sphenoid surface 112, form angle 323, this angle is between 10～20 °.Angle 323 gaps between this plane of inclination 322 and sphenoid surface 112 have the effect that guiding seawater impacts towards annular nib, reduce directly washing away butterfly plate 3.
One end that above-mentioned butterfly plate 3 is connected with sphenoid surface 5 offers and is embedded groove 33, is embedded in groove 33 composite seal is installed, and composite seal comprises the hard skeleton 331 of being made up of titanium alloy or two-phase stainless Steel material, and hard skeleton 331 outer surfaces are provided with rubber seal.This composite seal, owing to there being the support of hard skeleton 331, has been strengthened the intensity of the sealing surface between butterfly plate 3 and sphenoid surface 5 greatly, has strengthened the shock resistance ability to bear of sealing face 5, has further overcome the 3rd defect relating in prior art.
Above-mentioned rubber seal comprises respectively and the first Sealing 332 and the second Sealing 333 that are embedded groove 33 both sides inwall butts, and hard skeleton 331 forms sandwich sandwich structure between the first Sealing 332 and the second Sealing 333.Composite seal is the setting of sandwich sandwich structure, is convenient to install.Preferably, it is connected to form respectively the sleeve-like structure of an end opening the first Sealing 332 and the second Sealing 333 by the 3rd Sealing 334 with one end of sphenoid surface 112 butts, make its opening towards the bottom surface that is embedded groove 33, strengthen the sealability between sphenoid surface 112.
Above-mentioned valve rod 2 is connected with butterfly plate 3 by pressing plate 6, butterfly plate 3 offers screens groove 34 towards one end of pressing plate 6, pressing plate 6 comprises pressing plate body 61, pressing plate body 61 has the butt end face 62 of fitting with butterfly plate 3, the butt end face 62 of pressing plate 6 is provided with outstanding fixture block 63, fixture block 63 is embedded in screens groove 34, and the other end that pressing plate 6 is provided with fixture block 63 is relatively provided with the boss 64 coordinating with valve rod 2.Pressing plate 6 blocks establishing by fixture block 63 with the screens groove 34 of butterfly plate 3 and closes, strengthen degree of being connected firmly between the two, pressing plate body 61 also has the butt end face 62 of fitting with butterfly plate 3 simultaneously, make the mounting point between pressing plate 6 and butterfly plate 3 accurate, avoid occurring the phenomenon of the installation dislocation such as inclination and offset.
Above-mentioned valve rod 2 comprises upper valve rod 21 and the lower valve rod 22 of coaxial setting, valve road 12 comprises and coordinates respectively 121He Xiafa road, Shang Fa road 122 with upper valve rod 21 and lower valve rod 22, the other end that pressing plate 6 is provided with fixture block 63 is relatively provided with upper shaft hole seat 641 and lower shaft hole seat 642, upper valve rod 21 is connected with upper shaft hole seat 641 through Shang Fa road 121 and is by screw, upper valve rod 21 is fixing with butterfly plate 3, lower valve rod 22 is arranged in lower shaft hole seat 642 and lower valve rod 22 is fixing with butterfly plate 3 by screw, and upper shaft hole seat 641 and lower shaft hole seat 642 coaxially arrange.By valve rod 2 subsection setups, the one section material corresponding with butterfly plate 3 mainboard faces 31 in the middle of can saving compared with common one-part form valve rod 2, saves cost.
Between above-mentioned upper valve rod 21Yu Shangfa road 121 and between lower valve rod 22Yu Xiafa road 122, be respectively equipped with the hard lining 71 that two phase stainless steel material is made, between hard lining 71 and upper valve rod 21 and between hard lining 71 and lower valve rod 22, be respectively equipped with double-layer rubber circle 72.Between upper valve rod 21Yu Shangfa road 121 and lower valve rod 22Yu Xiafa road 122, be inlaid with two-phase stainless steel sleeve 71, reach anticorrosion object, because lining 71 and valve rod 2 are hard material, therefore be provided with respectively the rubber ring 72 of Dual-layer structure between hard lining 71 and upper valve rod 21 or lower valve rod 22, improve sealability.
The utility model is at valve body 1 outer surface spraying zinc anticorrosive coat, in butterfly plate 3 outer surfaces and valve body 1, fluid passage 11 inner wall surface are coated with ceramic anti-corrosion coating, and anti-corrosion coating is carried out to sealing of hole processing, valve is carried out to anticorrosion, sclerosis, sealing of hole processing, solve butterfly valve sea water corrosion resistant poor and be subject to gravel to wash away the poor problem of abrasion resistance properties, improved the working life of butterfly valve in seawater industry.In addition, sealing surface 5 between butterfly plate 3 and fluid passage 11 inwalls adopts composite seal, its hard skeleton 331 is fixed in titanium alloy hard skeleton 331 on butterfly plate 3 by the welding method first built-up welding one deck transition layer on butterfly plate 3 carbon steel base materials that adopts built-up welding titanium alloy again, improves the firm performance of this junction surface.Moreover, between valve rod 2 Yu Fa roads 12 by having improved the anticorrosion antiwear performance between valve rod 2 Yu Fa roads 12 coordinating of hard lining 71 and double-layer rubber circle 72.
Claims (8)
1. the wear-resisting butterfly valve of an anti-seawater corrosion, comprise valve body, valve rod and butterfly plate, in valve body, be provided with He Fa road, fluid passage, butterfly plate in fluid passage and and fluid passage inwall between form sealing surface, valve rod one end is fixedly connected with butterfly plate through valve road, it is characterized in that: described valve outer surface spray is provided with zinc corrosion-inhibiting coating, and fluid passage inwall, butterfly plate outer surface are coated with ceramic anti-corrosion coating, and described anti-corrosion coating is brushed with one deck sealant coating outward.
2. remove the wear-resisting butterfly valve of the anti-seawater corrosion described in 1 according to claim, it is characterized in that: described fluid passage inwall is provided with the ring limit projection towards fluid passage central axis projection, described ring limit projection has the sphenoid surface tilting towards fluid passage central axis, and true dip direction is formed slopely ring limit projection by the outlet end of fluid passage towards the entry end of fluid passage and is less than the structure of ring limit projection towards the aperture of the end face of fluid passage outlet towards the aperture of one end of fluid passage entrance, described ring limit projection is connected to form buffer table terrace towards sidewall and the fluid passage inwall of entrance one end, fluid passage, interface between described sphenoid surface and butterfly plate forms sealing surface.
3. the wear-resisting butterfly valve of anti-seawater corrosion according to claim 2, it is characterized in that: described butterfly plate comprises mainboard face, the outward edge of mainboard face is extended with the sealed end that forms sealing configuration with described sphenoid surface, described sealed end comprises the convex globoidal coordinating with described sphenoid surface, described convex globoidal is connected with the transition of described mainboard face by one section of plane of inclination, between described plane of inclination and described sphenoid surface, forms angle.
4. according to the wear-resisting butterfly valve of the anti-seawater corrosion described in claim 1 or 2 or 3, it is characterized in that: one end that described butterfly plate is connected with sphenoid surface offers and is embedded groove, be embedded composite seal is installed in groove, described composite seal comprises the hard skeleton of being made up of titanium alloy or two-phase stainless Steel material, and described hard skeleton outer surface is provided with rubber seal.
5. the wear-resisting butterfly valve of anti-seawater corrosion according to claim 4, it is characterized in that: described rubber seal comprises respectively and the first Sealing and the second Sealing that are embedded groove both sides inwall butt, described hard skeleton forms sandwich sandwich structure between the first Sealing and the second Sealing.
6. the wear-resisting butterfly valve of anti-seawater corrosion according to claim 1, it is characterized in that: described valve rod is connected with butterfly plate by pressing plate, described butterfly plate offers screens groove towards one end of described pressing plate, described pressing plate comprises pressing plate body, pressing plate body has the butt end face with butterfly plate laminating, the butt end face of described pressing plate is provided with outstanding fixture block, and described fixture block is embedded in screens groove, and the other end that described pressing plate is provided with fixture block is relatively provided with the boss coordinating with described valve rod.
7. the wear-resisting butterfly valve of anti-seawater corrosion according to claim 6, it is characterized in that: described valve rod comprises upper valve rod and the lower valve rod of coaxial setting, described valve road comprises and coordinates respectively Shang Fa Dao Hexiafa road with upper valve rod and lower valve rod, the other end that described pressing plate is provided with fixture block is relatively provided with upper shaft hole seat and lower shaft hole seat, described upper valve rod is connected with upper shaft hole seat and by screw, upper valve opening and butterfly plate is fixed through valve road, described lower valve rod is arranged in lower shaft hole seat and by screw, lower valve rod and butterfly plate is fixed, and described upper shaft hole seat and lower shaft hole seat coaxially arrange.
8. the wear-resisting butterfly valve of anti-seawater corrosion according to claim 7, it is characterized in that: between described upper valve rod Yu Shangfa road and between lower valve rod Yu Xiafa road, be respectively equipped with the hard lining that two phase stainless steel material is made, between described hard lining and upper valve rod and between hard lining and lower valve rod, be respectively equipped with double-layer rubber circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420306316.9U CN203880111U (en) | 2014-06-10 | 2014-06-10 | Wear resisting butterfly valve preventing seawater corrosion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420306316.9U CN203880111U (en) | 2014-06-10 | 2014-06-10 | Wear resisting butterfly valve preventing seawater corrosion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203880111U true CN203880111U (en) | 2014-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420306316.9U Expired - Fee Related CN203880111U (en) | 2014-06-10 | 2014-06-10 | Wear resisting butterfly valve preventing seawater corrosion |
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| Country | Link |
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| CN (1) | CN203880111U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105587705A (en) * | 2016-01-29 | 2016-05-18 | 太仓市微贯机电有限公司 | Scraping resisting and corrosion resisting pressure stabilizing valve |
| CN107664223A (en) * | 2017-11-03 | 2018-02-06 | 中船黄埔文冲船舶有限公司 | Anti-corrosion stop valve |
| WO2018094559A1 (en) * | 2016-11-22 | 2018-05-31 | 太仓市微贯机电有限公司 | Scratch-resistant and corrosion-resistant pressure maintaining valve |
-
2014
- 2014-06-10 CN CN201420306316.9U patent/CN203880111U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105587705A (en) * | 2016-01-29 | 2016-05-18 | 太仓市微贯机电有限公司 | Scraping resisting and corrosion resisting pressure stabilizing valve |
| WO2018094559A1 (en) * | 2016-11-22 | 2018-05-31 | 太仓市微贯机电有限公司 | Scratch-resistant and corrosion-resistant pressure maintaining valve |
| CN107664223A (en) * | 2017-11-03 | 2018-02-06 | 中船黄埔文冲船舶有限公司 | Anti-corrosion stop valve |
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