CN203239954U - Single valve plate double sealing butterfly valve - Google Patents
Single valve plate double sealing butterfly valve Download PDFInfo
- Publication number
- CN203239954U CN203239954U CN 201320242554 CN201320242554U CN203239954U CN 203239954 U CN203239954 U CN 203239954U CN 201320242554 CN201320242554 CN 201320242554 CN 201320242554 U CN201320242554 U CN 201320242554U CN 203239954 U CN203239954 U CN 203239954U
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- Prior art keywords
- valve
- butterfly
- sealing
- plate
- butterfly plate
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- 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.)
- Expired - Fee Related
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Abstract
The utility model provides a single valve plate double sealing butterfly valve which comprises a valve body, a butterfly plate, a pressing plate and a sealing device. The butterfly plate is arranged inside the valve body. The sealing device comprises a fixed sealing part and a movable sealing part, wherein the fixed sealing part is arranged between the butterfly plate and the valve body, and the movable sealing part is fixed on the periphery of the butterfly plate through the pressing plate. The same butterfly plate of the butterfly valve is provided with a stainless steel metal sealing plane and a rubber sealing plane, the stainless steel metal sealing plane is corrosion resistant and long in service life, and the rubber sealing plane is good in sealing effect and convenient to replace. Therefore, the service life of the valve is greatly prolonged, and the sealing effect of the valve is greatly improved.
Description
Technical field
The utility model relates to a kind of butterfly valve, and it is specifically related to a kind of single valve plate double seals butterfly valve.
Background technique
The butterfly valve of present domestic General valve industry production mostly is greatly single seal form, or is rubber seal, or is metal sealing.At the water power valve industry, a kind of double seals butterfly valve of part manufacturer production is arranged, this kind valve adopts two butterfly plate forms, and the dress rubber seal is as working seal on the butterfly plate, and another piece butterfly plate adopts metal sealing as the maintenance sealing.Also need to be by moveable sealing during the maintenance sealing, moveable sealing adopts piston type more, reaches seal action by hydraulic pressure or oil pressure actuated seal ring.The driving mechanism of this kind butterfly valve is complicated, needs rubber seal to move on the piston-type metal seal ring, and this rubber ring is fragile, aging, and is difficult for changing, and affects sealing effect.The piston-type metal seal ring belongs to thin-wall part, easily distortion.In addition, the maintenance of this valve sealing belongs to reverse sealing, and butterfly plate deforms under the pressure-acting of medium, and the butterfly plate sealing surface can break away from sealing seat, leaks thereby produce.Valve aperture is larger, and pressure medium is higher, leaks just more serious.
The model utility content
The purpose of this utility model is to solve the problem that prior art exists, and a kind of single valve plate double seals butterfly valve is provided, and has stainless steel metal sealing and two sealing surfaces of rubber seal at same butterfly plate, and the stainless steel metal sealing surface is corrosion-resistant, long service life; Rubber seal face good sealing effect, replacing facility; Thereby working life and the sealing effect of valve have greatly been improved.
In order to reach above-mentioned technical purpose, the utility model by the following technical solutions:
A kind of single valve plate double seals butterfly valve, comprise valve body, butterfly plate, pressing plate and seal arrangement, described butterfly plate is arranged in the valve body, described seal arrangement comprises fixing seals and dynamic seal, described fixing seals is arranged between described butterfly plate and the valve body, and described dynamic seal is fixed on the periphery of butterfly plate by described pressing plate.
Preferred as such scheme, described fixing seals is the stainless steel metal of built-up welding between described butterfly plate and valve body.
Preferred as such scheme, described dynamic seal is rubber seal.
Owing to having said structure, the utility model has the following advantages compared to existing technology:
1, a kind of single valve plate double seals butterfly valve of providing of the utility model, be provided with fixing seal and two Sealings of movable sealing at a butterfly plate, fixing seals is the maintenance sealing, dynamic seal is working seal, realize the double-sealing effect at a butterfly plate, not only improve sealing effect and the working life of valve, also simplified the structure of butterfly valve; Be sealed into simultaneously the forward sealing, be not subjected to the impact of butterfly plate distortion, simple in structure, operation, easy to maintenance is used reliable.
2, a kind of single valve plate double seals butterfly valve of providing of the utility model, fixing seals adopts the stainless steel of built-up welding, withstand corrosion, the working life that strengthens butterfly valve.
3, a kind of single valve plate double seals butterfly valve of providing of the utility model, dynamic seal adopts rubber seal, good sealing effect, change convenient.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the utility model embodiment's generalized section;
Fig. 2 is the I place enlarged diagram of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing of the present utility model, the technical solution of the utility model is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment who obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, 2, the utility model provides a kind of single valve plate double seals butterfly valve, comprise valve body 1, butterfly plate 2, pressing plate 3 and seal arrangement, described butterfly plate 2 is arranged in the valve body 1, be provided with seal ring 6 with butterfly plate 2 contacted sealing surfaces in the described valve body 1, described seal arrangement comprises fixing seals and dynamic seal, and described fixing seals is arranged between described butterfly plate 2 and the seal ring 6, and described pressing plate 3 is fixed in described dynamic seal on the periphery of described butterfly plate 2 by bolt; Described fixing seals is the stainless steel metal 4 in described butterfly plate 2 and 6 built-up welding of seal ring; Described dynamic seal is rubber seal 5.There are throw of eccentric H in the central shaft of valve rod and the central shaft of valve body, when butterfly plate is subject to actuator drives, butterfly plate will be along the central shaft A rotation of valve rod, during normal working, realize sealing by rubber seal 5, if when rubber seal need to be changed, the sealing when realizing inspecting state by stainless steel metal 4, thisly at single butterfly plate double sealing structure is set, the stainless steel metal sealing surface is corrosion-resistant, long service life; Rubber seal face good sealing effect, replacing facility; Thereby working life and the sealing effect of valve have greatly been improved; Be sealed into simultaneously the forward sealing, be not subjected to the impact of butterfly plate distortion, simple in structure, operation, easy to maintenance is used reliable.
The above; it only is embodiment of the present utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of described claim.
Claims (3)
1. single valve plate double seals butterfly valve, comprise valve body, butterfly plate, pressing plate and seal arrangement, it is characterized in that, described butterfly plate is arranged in the valve body, described seal arrangement comprises fixing seals and dynamic seal, described fixing seals is arranged between described butterfly plate and the valve body, and described dynamic seal is fixed on the periphery of butterfly plate by described pressing plate.
2. single valve plate double seals butterfly valve according to claim 1 is characterized in that, described fixing seals is the stainless steel metal of built-up welding between described butterfly plate and valve body.
3. single valve plate double seals butterfly valve according to claim 1 and 2 is characterized in that, described dynamic seal is rubber seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320242554 CN203239954U (en) | 2013-05-08 | 2013-05-08 | Single valve plate double sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320242554 CN203239954U (en) | 2013-05-08 | 2013-05-08 | Single valve plate double sealing butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203239954U true CN203239954U (en) | 2013-10-16 |
Family
ID=49317252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320242554 Expired - Fee Related CN203239954U (en) | 2013-05-08 | 2013-05-08 | Single valve plate double sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203239954U (en) |
-
2013
- 2013-05-08 CN CN 201320242554 patent/CN203239954U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131016 Termination date: 20190508 |