CN105402423A - Soft seal butterfly valve - Google Patents
Soft seal butterfly valve Download PDFInfo
- Publication number
- CN105402423A CN105402423A CN201510954711.7A CN201510954711A CN105402423A CN 105402423 A CN105402423 A CN 105402423A CN 201510954711 A CN201510954711 A CN 201510954711A CN 105402423 A CN105402423 A CN 105402423A
- Authority
- CN
- China
- Prior art keywords
- valve
- cast iron
- butterfly valve
- soft sealing
- epoxy resin
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims abstract description 34
- 229910001018 Cast iron Inorganic materials 0.000 claims abstract description 21
- 239000003822 epoxy resin Substances 0.000 claims abstract description 12
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 12
- 239000003973 paint Substances 0.000 claims abstract description 9
- 229910001141 Ductile iron Inorganic materials 0.000 claims abstract description 6
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 3
- 239000003651 drinking water Substances 0.000 abstract description 3
- 238000009713 electroplating Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 235000020188 drinking water Nutrition 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 235000012206 bottled water Nutrition 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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
-
- 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
- F16K1/16—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
- F16K1/224—Details of bearings for the axis of rotation
-
- 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
- F16K1/226—Shaping or arrangements of the sealing
- F16K1/2261—Shaping or arrangements of the sealing the sealing being arranged on 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
-
- 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
- F16K25/00—Details relating to contact between valve members and seats
- F16K25/005—Particular materials for seats or closure elements
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a soft seal butterfly valve which comprises a cast iron valve body, a replaceable type rubber valve seat in interference fit with the cast iron valve body, a cast iron valve plate, an upper valve shaft and a lower valve shaft. An epoxy resin paint layer is arranged on the sealing face of the cast iron valve plate. The epoxy resin paint is in the shape of an integral spherical face. According to the soft seal butterfly valve, the sealing face of the soft seal butterfly valve is designed into the integral spherical shape, sealing torque can be effectively reduced, and torque of opening and closing the valve is greatly reduced; paint is sprayed on the spheroidal graphite cast iron, and environment pollution caused by previous electroplating treatment is reduced; and the soft seal butterfly valve is suitable for more environments such as the drinking water environment, the water supply environment and other special environments.
Description
Technical field
The present invention relates to valve technology field, particularly relate to a kind of soft sealing butterfly valve.
Background technique
In prior art, between the valve seat of tradition butterfly valve and butterfly plate, the cylinder inner plane that adopts coordinates more, there is certain drawback in the fit system of this structure: can not coordinate too tight between butterfly plate and valve seat, if coordinate too tight, valve switch is just very difficult, if do not exert oneself, is just difficult to Open valve or complete throttle down, and throttle down of exerting oneself, butterfly plate is just easy to distortion and causes damage.But, if butterfly plate coordinates defective tightness with valve seat, be then easy to produce and leak.
Summary of the invention
The object of the invention is the technological deficiency for existing in prior art, and a kind of soft sealing butterfly valve is provided.
The technological scheme adopted for realizing object of the present invention is:
A kind of soft sealing butterfly valve, comprises cast iron valve body, with the Changable type rubber valve seat of described cast iron valve body interference fit, cast iron valve plate, and upper valve shaft and lower valve shaft, the sealing surface of described cast iron valve plate is provided with epoxy resin enamelled coating, described epoxy resin paint is overall sphere.
The width of described sealing surface is at 3-5mm.
Described cast iron valve plate is spheroidal graphite cast iron.
The thickness of described epoxy resin enamelled coating is 0.125mm-0.175mm.
Described valve seat is exoskeletal quality of rubber materials valve seat.
The outer middle side part of described valve seat be formed multi-compartment arrange and the stiffening rib extended vertically with relative valve body fixed valve base.
The lower valve port place of described cast iron valve body is provided with lower plug cover, and described lower plug cover is fixedly connected with described lower valve shaft lower end by screw thread, meanwhile, is provided with jump ring and goes out downwards to prevent it between described lower valve shaft lower end and valve body.
Compared with prior art, the invention has the beneficial effects as follows:
The sealing surface of soft sealing butterfly valve is designed to an integral spherical by the present invention, effectively can reduce packing torque, greatly reduces the moment of torsion of opening/shutting valve.And process that nodular cast iron valve plate sprayed paint, reduce the environmental pollution of electroplating processes in the past, and be applicable to more environment, such as the particular surroundings such as potable water, water supply.
Accompanying drawing explanation
Figure 1 shows that the structural representation of soft sealing butterfly valve of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1, soft sealing butterfly valve of the present invention comprises cast iron valve body 1, rubber valve seat 7, cast iron valve plate 8, and upper valve shaft 6, lower valve shaft 9, the sealing surface of described cast iron valve plate is provided with epoxy resin enamelled coating, the width of described sealing surface is at 3-5mm, and described epoxy resin enamelled coating is overall sphere.Described sealing surface comprises lower end face corresponding to the bi-side of valve plate and the upper end face corresponding with upper valve port and lower valve port, and this four part is on same sphere.The sealing surface of soft sealing butterfly valve is designed to an integral spherical, reduces the width of sealing surface simultaneously, effectively can reduce packing torque, greatly reduce the moment of torsion of opening/shutting valve.Simultaneously, nodular cast iron valve plate to be sprayed paint process, reduce the environmental pollution of electroplating processes in the past, and be applicable to more environment, the such as particular surroundings such as potable water, water supply, specifically, spraying paint for old man's board epoxy resin paint of nodular cast iron valve plate sealing surface, the thickness of epoxy resin enamelled coating is 0.125mm to 0.175mm.
Wherein, described upper valve shaft upper end passes from the upper valve port of valve body and is connected to realize the unlatching of cast iron valve plate 8 by key 1 with operating-controlling mechanism, simultaneously, described upper valve shaft 6 is provided with ring groove with the sealing in seal ring 5 realization on location between valve shaft and valve body, the upper valve shaft 6 on described upper seal ring 5 top is arranged with upper guide bush 4 to carry out leading and to reduce friction, reduce and open moment, the top of the upper valve port of described valve body is fixedly installed sealing and location that gland 14 and divided ring 2 and filler 3 realize end, wherein, described upper guide bush top is located by divided ring, bottom has the step of the inner stopper being formed in valve port upper end to locate.
The lower valve port place of described cast iron valve body is provided with lower plug cover 13, and described lower plug cover is fixedly connected with described valve shaft lower end by screw thread, meanwhile, is provided with jump ring 12 and goes out downwards to prevent it between described valve shaft lower end and valve body.The double break axle of valve plate of the present invention, the relative axis design of valve plate decreases the thickness at middle part, effectively reduces the pressure loss of valve.
Valve seat 7 of the present invention realizes effective sealing with valve body 1 by interference fit, and valve plate and valve seat are sealed by integral spherical, wherein, the outer middle side part of described valve seat be formed multi-compartment arrange and the stiffening rib extended vertically with relative valve body fixed valve base, when making valve in working order, sealing is stable, reliable, makes valve plate contact with valve seat better simultaneously, guarantee valve plate seals, and reduces valve torque.
Preferably, described valve seat is exoskeletal valve seat, and valve seat adopts reinforced grid design, and rubber thickness is large, compression resilience is excellent, thus moment of torsion is reduced, and with valve body interference seal, sealing effect is better, valve seat can make multiple quality of rubber materials, to be suitable for various different operating mode, valve seat is replaceable simultaneously, realizes product different operating mode of convenient and swift application after exchange valve seat.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. a soft sealing butterfly valve, it is characterized in that, comprise cast iron valve body, with the Changable type rubber valve seat of described cast iron valve body interference fit, cast iron valve plate, and upper valve shaft and lower valve shaft, the sealing surface of described cast iron valve plate is provided with epoxy resin enamelled coating, described epoxy resin paint is overall sphere.
2. soft sealing butterfly valve as claimed in claim 1, it is characterized in that, the width of described sealing surface is at 3-5mm.
3. soft sealing butterfly valve as claimed in claim 1, it is characterized in that, described cast iron valve plate is spheroidal graphite cast iron.
4. soft sealing butterfly valve as claimed in claim 1, it is characterized in that, the thickness of described epoxy resin enamelled coating is 0.125mm-0.175mm.
5. soft sealing butterfly valve as claimed in claim 1, it is characterized in that, described valve seat is exoskeletal quality of rubber materials valve seat.
6. soft sealing butterfly valve as claimed in claim 5, is characterized in that, the outer middle side part of described valve seat be formed multi-compartment arrange and the stiffening rib extended vertically with relative valve body fixed valve base.
7. soft sealing butterfly valve as claimed in claim 1, it is characterized in that, the lower valve port place of described cast iron valve body is provided with lower plug cover, described lower plug cover is fixedly connected with described lower valve shaft lower end by screw thread, meanwhile, be provided with jump ring between described lower valve shaft lower end and valve body to go out downwards to prevent it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510954711.7A CN105402423A (en) | 2015-12-15 | 2015-12-15 | Soft seal butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510954711.7A CN105402423A (en) | 2015-12-15 | 2015-12-15 | Soft seal butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105402423A true CN105402423A (en) | 2016-03-16 |
Family
ID=55468089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510954711.7A Pending CN105402423A (en) | 2015-12-15 | 2015-12-15 | Soft seal butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105402423A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106195293A (en) * | 2016-08-31 | 2016-12-07 | 天津富赛克流体控制设备有限公司 | Soft sealing butterfly valve |
| CN108561571A (en) * | 2018-06-26 | 2018-09-21 | 宁津美华工业有限公司 | A kind of butterfly valve seat |
-
2015
- 2015-12-15 CN CN201510954711.7A patent/CN105402423A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106195293A (en) * | 2016-08-31 | 2016-12-07 | 天津富赛克流体控制设备有限公司 | Soft sealing butterfly valve |
| CN108561571A (en) * | 2018-06-26 | 2018-09-21 | 宁津美华工业有限公司 | A kind of butterfly valve seat |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160316 |