CN2412132Y - Three-dimensional eccentric conical surface hard sealed butterfly bamper - Google Patents
Three-dimensional eccentric conical surface hard sealed butterfly bamper Download PDFInfo
- Publication number
- CN2412132Y CN2412132Y CN 00229687 CN00229687U CN2412132Y CN 2412132 Y CN2412132 Y CN 2412132Y CN 00229687 CN00229687 CN 00229687 CN 00229687 U CN00229687 U CN 00229687U CN 2412132 Y CN2412132 Y CN 2412132Y
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- valve
- sealing
- eccentric
- sealing surface
- shaft
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- Expired - Fee Related
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Abstract
The utility model relates to a three-dimensional eccentric conical surface hard sealed butterfly valve which comprises a valve body, a valve seat, a valve shaft, a valve plate and sealing filler. The utility model is characterized in that the sealing surface of the valve seat and the sealing surface of the valve plate are both deflective conical table surfaces; conical points B of the deflective conical table surfaces are biased at one side of the centerline of a flow channel of the valve body; the slewing shaft core O of the valve shaft and the centerline of the flow channel of the valve body have an eccentric distance e; the slewing shaft core O of the valve shaft and the center line of the sealing surface also have a distance L. The utility model has the advantages of reasonable structure, tight fits of the sealing surfaces, no leakage, high temperature resistance, high pressure resistance, three-eccentric structure, small turning moment, long service life and convenient maintenance. The utility model uses the deflective conical table surfaces to form sealing pairs.
Description
The utility model relates to a kind of valve, the eccentric conical surface hard seal butterfly valve of especially a kind of three-dimensional, and it is applicable on the conveyance conduit of high, medium and low piezodielectric.
At present, purposes valve approximate, that structure is different is of a great variety, it is multiple only to be that metal hard-sealing butterfly valve also has, but existing metal hard-sealing butterfly valve is because due to its structure, in use have the following disadvantages: (1), seal valve seat structural type adopt " U ", " S " and " L " type, there is leakage phenomenon in various degree in the sealing of these several forms, and only is applicable on the low pressure pipeline, the easier leakage of high pressure medium.And leaking rear valve base is difficult for changing.(2), butterfly valve adopts two eccentric structures, the butterfly valve moment of torsion is big, opens relatively difficulty, damages component easily.(3), the butterfly plate sealing surface adopts body to process, anti-dielectric corrosion performance is poor, causes leakage phenomenon easily.(4), be bumped into other alloy material on the butterfly plate that has, increase the sectional area of butterfly plate, influenced the flow of medium.(5), no joint chair is connected between butterfly valve and the transmission device, the valve shaft place just can repair or replace filler after leaking and must laying down transmission device, influences the normal operation of pipeline.(6), valve shaft connects with generally adopting taper pin being connected of valve plate, reduces the intensity of valve shaft, causes the distortion and the fracture of valve shaft easily.
A kind of novel hard seal butterfly valve that the purpose of this utility model is designed and developed at the existing deficiency of above-mentioned existing valve just, this valve mechanism is reasonable, good sealing effect, moment of rotation is little, high temperature high voltage resistant, long service life, easy to maintenance.
The purpose of this utility model realizes by following scheme:
The eccentric conical surface hard seal butterfly valve of three-dimensional of the present utility model comprises valve body, is fixed on valve seat in the valve body by platen, be installed on the valve shaft and valve plate and stuffing box packing that match with valve seat, wherein: the sealing surface of valve seat and the sealing surface of valve plate are inclined to one side frustum face, and both cooperate the formation sealing pair; The conical point B of frustum face is offset to valve flowing channel center line one side partially, and valve shaft revolution axle center O and valve flowing channel center line have an eccentric distance e, also have a distance L with the sealing surface center line.
In the utility model, the thickness of valve plate edge sealing part is less than the thickness of valve plate center, and its effect is to reduce seal f ace width, improves sealability; Built-up welding has stainless steel material on the sealing surface of valve plate, can prevent the corrosion of sealing surface; Valve shaft top is provided with joint chair, is used for being connected with transmission device; In order to guarantee the intensity of valve shaft, valve plate combines by flat key and valve shaft.
1., owing to adopt three eccentric structures the advantage that the utility model is compared with prior art possessed is:, moment of torsion is little, opens easily; 2., adopt inclined to one side frustum face to constitute sealing pair, sealing surface cooperates tight, does not have to leak, and high temperature resistant, high pressure; 3., valve body and valve seat adopts the solid forging structure, the processing back is indeformable, exchanges easily; 4., sealing surface of valve plate adopts the built-up welding stainless steel material, can prevent the corrosion of sealing surface, reduces the sectional area of valve plate, increased the flow of butterfly valve medium.5., valve seat is connected by joint chair with transmission device, filler is adjusted and changed to axial leakage easily; 6., valve shaft and valve plate adopt flat key to be connected, than the taper pin connection of common employing, more can guarantee the intensity of valve shaft.
The drawing of accompanying drawing is described as follows:
Fig. 1 is a structural front view of the present utility model.
Fig. 2 is the A-A sectional view of Fig. 1.
The utility model is described in further details below in conjunction with accompanying drawing:
As shown in Figure 1 and Figure 2: this three-dimensional eccentric conical surface hard seal butterfly valve comprises valve body (4), is fixed on the interior valve seat (5) of valve body by fastening disk (6), be installed on the valve shaft (9) and valve plate (8) that match with valve seat (5) and stuffing box packing (3), gland (2), wherein: the sealing surface of the sealing surface of valve seat (5) and valve plate (8) is inclined to one side frustum face, and both cooperate the formation sealing pair; The thickness of valve plate (8) edge sealing part is less than the thickness of valve plate center, and its effect is to reduce seal f ace width, improves sealability; Built-up welding has stainless steel material on the sealing surface of valve plate, can prevent the corrosion of sealing surface; The conical point B of frustum face is offset to valve flowing channel center line one side partially, and valve shaft (9) revolution axle center O and valve flowing channel center line have an eccentric distance e, also have a distance L with the sealing surface center line.Valve shaft (9) top is provided with joint chair (1), is used for being connected with transmission device; In order to guarantee the intensity of valve shaft, valve plate (8) combines by flat key (7) and valve shaft (9).
During work, rotate valve shaft and open valve gradually, and slowly strengthen with the rotation valve port of valve rod, when becoming 90 ° with pipe diameter up to the valve plate plane valve port open maximum, counter-rotation when closing, valve port dwindles gradually, entirely directly close up sealing.
Claims (5)
1, the eccentric conical surface hard seal butterfly valve of a kind of three-dimensional, it comprises valve body (4), is fixed on the interior valve seat (5) of valve body by fastening disk (6), be installed in valve plate on the valve shaft (9) and that match with valve seat (8) and stuffing box packing (3), it is characterized in that: the sealing surface of the sealing surface of valve seat (5) and valve plate (8) is inclined to one side frustum face, and both cooperate the formation sealing pair; The conical point B of frustum face is offset to valve body (4) runner center line one side partially, and valve shaft (9) revolution axle center O and valve body (4) runner center line have an eccentric distance e, also have a distance L with the sealing surface center line.
2, three-dimensional eccentric awl according to claim 1 and hard seal butterfly valve is characterized in that: the thickness of valve plate (8) edge sealing part is less than the thickness of valve plate center.
3, the eccentric conical surface hard seal butterfly valve of three-dimensional according to claim 1 and 2 is characterized in that: built-up welding has stainless steel material on valve plate (8) sealing surface.
4, the eccentric conical surface hard seal butterfly valve of three-dimensional according to claim 1 is characterized in that: valve shaft (9) top is provided with joint chair (1), is used for being connected with transmission device.
5, the eccentric conical surface hard seal butterfly valve of three-dimensional according to claim 1 is characterized in that: valve plate (8) combines by flat key (7) and valve shaft (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00229687 CN2412132Y (en) | 2000-04-12 | 2000-04-12 | Three-dimensional eccentric conical surface hard sealed butterfly bamper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00229687 CN2412132Y (en) | 2000-04-12 | 2000-04-12 | Three-dimensional eccentric conical surface hard sealed butterfly bamper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2412132Y true CN2412132Y (en) | 2000-12-27 |
Family
ID=33592926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00229687 Expired - Fee Related CN2412132Y (en) | 2000-04-12 | 2000-04-12 | Three-dimensional eccentric conical surface hard sealed butterfly bamper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2412132Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8727313B2 (en) | 2012-09-26 | 2014-05-20 | Jdv Control Valves Co., Ltd | Tri-eccentric valve with a symmetric drain-proof ring |
| DE102014104346A1 (en) | 2014-03-27 | 2015-10-01 | Jdv Control Valves Co., Ltd. | TRIPLE ECCENTRIC VALVE WITH SYMMETRIC SEALING THAT DOES NOT USE NORMAL POWER ON THE VALVE SEAT |
-
2000
- 2000-04-12 CN CN 00229687 patent/CN2412132Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8727313B2 (en) | 2012-09-26 | 2014-05-20 | Jdv Control Valves Co., Ltd | Tri-eccentric valve with a symmetric drain-proof ring |
| DE102014104346A1 (en) | 2014-03-27 | 2015-10-01 | Jdv Control Valves Co., Ltd. | TRIPLE ECCENTRIC VALVE WITH SYMMETRIC SEALING THAT DOES NOT USE NORMAL POWER ON THE VALVE SEAT |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |