CN204533581U - A kind of sea water resistance butterfly valve - Google Patents
A kind of sea water resistance butterfly valve Download PDFInfo
- Publication number
- CN204533581U CN204533581U CN201420866212.3U CN201420866212U CN204533581U CN 204533581 U CN204533581 U CN 204533581U CN 201420866212 U CN201420866212 U CN 201420866212U CN 204533581 U CN204533581 U CN 204533581U
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- Prior art keywords
- valve rod
- sea water
- flap
- water resistance
- valve body
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Abstract
The utility model relates to a kind of sea water resistance butterfly valve, comprise end cap (1), lower valve rod (2), flap (4), upper valve rod (7), pressing plate (8), valve body (11), described end cap (1) lid is located at lower valve rod (2) bottom, be arranged on after described lower valve rod (2) and upper valve rod (7) are separately positioned on flap (4) top and the bottom in valve body (11), described pressing plate (8) is arranged on upper valve rod (7) top, and described flap (4) surface spraying has nylon layer.Compared with prior art, the utility model has the advantages such as anti-corrosion capacity is strong, the life-span is long.
Description
Technical field
The utility model relates to butterfly valve, especially relates to a kind ofly being applicable to the sea water resistance butterfly valve that Seawater was blocked or was communicated with in naval vessel, Binhai Generator Station, desalination of sea water etc.
Background technique
At present, the exploitation of ocean are the great national defence of China and economic strategy goal, the wherein construction of Infrastructure, be unable to do without the valve of resisting sea water erosion.This should solve the corrosion resistance of material, reduces raw material and manufacture cost again, is this problem tackling key problem main points.
Sea water resistance butterfly valve conventional is at present the object reaching anti-seawater corrosion, one is that choice for use anticorrosive (as Cuprum alloy or stainless steel etc.) makes valve body and butterfly plate, two is adopt separation layer valve body and butterfly plate and Seawater to be isolated, and two kinds of methods cut both ways.
Chinese patent application 201310379758.6 discloses a kind of heavy caliber sea water resistance centre-pivoted butterfly valve, there are valve body and butterfly plate, valve body there is valve shaft, butterfly plate is connected on the valve shaft in valve body, sealing pair is had between valve body and butterfly plate, sealing pair has the valve seal ring at valve body inner circumference and the butterfly plate seal ring at butterfly plate excircle, the axis of valve shaft, the center line of butterfly plate seal ring and the center line of valve seal ring are on the same line, the inner circumferential surface of valve body is compounded with rubber layer, valve seal ring is sea water resistance rubber material seal ring, the sealing surface of valve seal ring and butterfly plate seal ring is spherical zone face.Valve body and the butterfly plate carbon steel material of this invention are made, the inner circumferential surface of valve body is compounded with rubber layer, valve seal ring is sea water resistance rubber material, sealing pair is that soft-hard material fitted seal is secondary, although this butterfly valve cost declines, because employing rubber self can be aging, seawater scouring is subject in using process, produce the reasons such as wearing and tearing due to friction during switch valve, working life is generally 3-5, after this must transport manufactory back and carry out large repairs.
Summary of the invention
The purpose of this utility model be exactly provide that a kind of anti-corrosion capacity is strong to overcome defect that above-mentioned prior art exists, sea water resistance butterfly valve that the life-span is long.
The purpose of this utility model can be achieved through the following technical solutions: a kind of sea water resistance butterfly valve, comprise end cap, lower valve rod, flap, upper valve rod, pressing plate, valve body, described end cap lid is located at bottom lower valve rod, described lower valve rod and upper valve rod are arranged in valve body after being separately positioned on flap top and the bottom, described pressing plate is arranged on upper valve rod top, it is characterized in that, described flap surface spraying has nylon layer.
Described valve body and lower valve rod and flap joint are provided with lining ring, and flap and lining ring form sealing pair;
Described valve body and upper valve rod and flap joint are provided with lining and O RunddichtringO; Described upper valve rod overcoat has short lining, by short lining and valve body contact.
The cushion block of adjusting play is provided with between described end cap and lower valve rod.
Be connected by screw between described end cap and valve body.
Described valve body is by Flange joint manual operating device, and described manual operating device connects upper valve rod by key.
Back-up ring is provided with before described pressing plate.
Compared with prior art, composite nylon II material particles is melted into liquid state by the utility model in high temperature, pass through air gun, high-pressure uniform is sprayed on butterfly lobe metal surface, can significantly improve the dynamic modulus of material, and make the packing density mode of nylon matrix there occurs change, composite material and metallic matrix are bonded together completely, add original single material behavior, greatly improve flap corrosion resistance.Be provided with lining, cushion block, seal ring etc. to reduce friction, prevent from revealing simultaneously, be provided with back-up ring pressing plate, prevent valve rod, short lining axial float.There is the advantages such as anti-corrosion capacity is strong, the life-span is long.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model butterfly valve;
Fig. 2 is the side view of the utility model butterfly valve.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
Embodiment 1
As shown in Fig. 1 ~ 2, a kind of sea water resistance butterfly valve, comprise end cap 1, lower valve rod 2, flap 4, upper valve rod 7, pressing plate 8, valve body 11, described end cap 1 lid is located at bottom lower valve rod 2, be provided with adjusting play between described end cap 1 and lower valve rod 2 and reduce the cushion block rubbed, end cap can prevent medium from revealing as the capping of valve body, and described lower valve rod 2 and upper valve rod 7 are arranged in valve body 11 after being separately positioned on flap 4 top and the bottom, is connected by screw between described end cap 1 and valve body 11.Described valve body 11 is provided with lining ring 3 with lower valve rod 2 and flap 4 joint, and flap 4 and lining ring 3 form sealing pair, and ensureing that the sealing of valve is not revealed, is the major part of valve sealing element; Described valve body 11 is provided with lining and O RunddichtringO 5 with upper valve rod 7 and flap 4 joint, and friction factor when lower valve rod rotates in minimizing, prevents medium from revealing from lining; Described upper valve rod 7 overcoat has short lining 6, is contacted with valve body 11 by short lining 6, prevents medium from revealing from long bushing.Hoisting capacity is delivered to the major part on open-shut device by lower valve rod 2 and upper valve rod 7 simultaneously.
Described pressing plate 8 is arranged on upper valve rod 7 top, is provided with back-up ring before described pressing plate 8, and pressing plate 8 prevents valve rod, short lining axial float together with back-up ring.Described valve body 11 is by Flange joint manual operating device 9, and described manual operating device 9 connects upper valve rod 7 by key 10.Manual operating device 9 pairs of valve switchs carry out manually operated equipment.Valve body 11 and manual operating device 9, by Stud connection, by nut check, and arrange packing ring between valve body 11 and manual operating device 9, increase the connection locking torque of valve body and manual operating device.
Described flap 4 surface spraying has nylon layer.Composite nylon II material particles is melted into liquid state in high temperature, pass through air gun, high-pressure uniform is sprayed on butterfly lobe metal surface, the dynamic modulus of material can be significantly improved, and make the packing density mode of nylon matrix there occurs change, composite material and metallic matrix are bonded together completely, add original single material behavior, greatly improve flap corrosion resistance.
Claims (7)
1. a sea water resistance butterfly valve, comprise end cap (1), lower valve rod (2), flap (4), upper valve rod (7), pressing plate (8), valve body (11), described end cap (1) lid is located at lower valve rod (2) bottom, be arranged on after described lower valve rod (2) and upper valve rod (7) are separately positioned on flap (4) top and the bottom in valve body (11), described pressing plate (8) is arranged on upper valve rod (7) top, it is characterized in that, described flap (4) surface spraying has nylon layer.
2. a kind of sea water resistance butterfly valve according to claim 1, it is characterized in that, described valve body (11) is provided with lining ring (3) with lower valve rod (2) and flap (4) joint, and flap (4) and lining ring (3) form sealing pair.
3. a kind of sea water resistance butterfly valve according to claim 1, is characterized in that, described valve body (11) is provided with lining and O RunddichtringO (5) with upper valve rod (7) and flap (4) joint; Described upper valve rod (7) overcoat has short lining (6), is contacted with valve body (11) by short lining (6).
4. a kind of sea water resistance butterfly valve according to claim 1, is characterized in that, is provided with the cushion block of adjusting play between described end cap (1) and lower valve rod (2).
5. a kind of sea water resistance butterfly valve according to claim 1, is characterized in that, is connected by screw between described end cap (1) and valve body (11).
6. a kind of sea water resistance butterfly valve according to claim 1, it is characterized in that, described valve body (11) is by Flange joint manual operating device (9), and described manual operating device (9) connects upper valve rod (7) by key (10).
7. a kind of sea water resistance butterfly valve according to claim 1, is characterized in that, described pressing plate (8) is front is provided with back-up ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420866212.3U CN204533581U (en) | 2014-12-30 | 2014-12-30 | A kind of sea water resistance butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420866212.3U CN204533581U (en) | 2014-12-30 | 2014-12-30 | A kind of sea water resistance butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204533581U true CN204533581U (en) | 2015-08-05 |
Family
ID=53747590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420866212.3U Active CN204533581U (en) | 2014-12-30 | 2014-12-30 | A kind of sea water resistance butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204533581U (en) |
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2014
- 2014-12-30 CN CN201420866212.3U patent/CN204533581U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |