CN205089996U - Two eccentric butterfly valves of soft seal are with valve plate seal ring who has fluoroplastics covering - Google Patents
Two eccentric butterfly valves of soft seal are with valve plate seal ring who has fluoroplastics covering Download PDFInfo
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- CN205089996U CN205089996U CN201520840818.4U CN201520840818U CN205089996U CN 205089996 U CN205089996 U CN 205089996U CN 201520840818 U CN201520840818 U CN 201520840818U CN 205089996 U CN205089996 U CN 205089996U
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Abstract
The utility model relates to a two eccentric butterfly valves of soft seal are with valve plate seal ring who has fluoroplastics covering, include that it fixes the valve plate seal ring on it to encircle the valve plate outer fringe, the valve plate seal ring under the valve plate closed condition receives the extrusion and sets up the disk seat conical surface sealing contact on valve body passageway inner wall, its characterized in that valve plate seal ring is a fluoroplastics covering valve plate seal ring who comprises fluorubber or silicon rubber core circle and surperficial wrap -around fluoroplastics layer, and its sectional form is the wooden club shape who is formed by top semicircle, semicircle the both ends slick and sly adduction hypotenuse of connecting, vertical limit and horizontal base in proper order, equipment location back valve plate seal ring sets up with the outstanding valve plate outer fringe of its section central line perpendicular to disk seat conical surface and top. The utility model has the advantages that high temperature resistant, sealing performance good, is applicable to food and oils medium.
Description
Technical field
The utility model relates to a kind of soft sealing butterfly valve component, particularly relates to a kind of soft seal double eccentric butterfly valve valve plate seal ring with fluoroplastic covering.
Background technique
Soft sealing butterfly valve mainly comprises valve body, valve seat, valve plate and valve shaft, and all outer rims of valve plate ring are provided with valve plate seal ring.The valve plate of butterfly valve is installed on the diametric(al) of valve channel, and in valve cylinder-shaped passage, valve plate rotates around valve shaft.When needs medium circulates, valve shaft is rotated counterclockwise 90 °, and driving valve plate and valve plate seal ring to rotate, when valve plate seal ring center line and valve body central axis, is standard-sized sheet.When needs block medium circulation, turn clockwise valve shaft, and valve plate seal ring center line is overlapped with valve body center line, and now valve plate seal ring extrudes valve seat, and generation resiliently deformable is filled up gap and played seal action, thus full cut-off prevents the circulation of medium.If adjust flux, valve plate seal ring center line is made to become the angle of a 0-90 ° with valve body center line.
Soft seal double eccentric butterfly valve, valve body 01 is as shown in Figure 1 the two eccentric cast-iron butterfly valve of rubber seal of cast iron quality, because its structural secondary eccentric produces cam effect, valve plate 07 sealing surface when opening can be separated with valve seat 04 sealing surface rapidly, alleviates the friction torque power of sealing surface of valve plate and sealing surface of seat; Have again the sealability of closing tighter and tighter during closedown, therefore, the sealability of this type of valve is reliable; Current sealing pair material generally selects stainless steel and rubber to match, and namely adopts stainless steel valve seat 04 and rubber valve plate seal ring 06, and has removable feature, therefore long service life, and valve plate adopts frame structure, and intensity is high, and area of passage is large, and flow resistance is little.In view of above-mentioned plurality of advantages, this type of valve is widely used in the system water supply and sewages such as water factory, power plant, steel mill, papermaking, chemical industry, diet.
But rubber valve plate seal ring as above, because its operating temperature of quality of rubber materials is limited to less than 120 DEG C, just inadaptable for medium oil product, the working environment of steam equitemperature more than 120 DEG C.In addition, rubber material is not suitable for food, oil based media yet.Consider above-mentioned factor, adopt the fluoroplastic of high temperature resistant more than 150 DEG C to replace rubber material to contribute to solving the problem, but fluoroplastic belong to pure plastics, elasticity extreme difference, directly affect sealability and easily produce wearing and tearing.Therefore, research and develop a kind ofly improve resistance to high temperature, can be used for food, oil based media and the soft seal double eccentric butterfly valve valve plate seal ring of favorable sealing property becomes industry concerned issue.
Model utility content
Main purpose of the present utility model is for the problems referred to above, provide a kind of high temperature resistant, can be used for food and oil based media and the soft seal double eccentric butterfly valve of the favorable sealing property valve plate seal ring with fluoroplastic covering.
The utility model solves the technological scheme that its technical problem adopts:
A kind of soft seal double eccentric butterfly valve valve plate seal ring with fluoroplastic covering, comprise the valve plate seal ring be fixed thereon around valve plate outer rim, valve plate seal ring under valve plate closed condition is squeezed and contacts with the valve seat conical surface seal be arranged on valve channel inwall, it is characterized in that described valve plate seal ring is a fluoroplastic covering valve plate seal ring be made up of fluorine rubber or silicone rubber core circle and surface coated fluoroplastics layer thereof, its section configuration is the wooden club shape formed by the adduction hypotenuse at top semi-circular, semicircle two ends successively round and smooth connection, vertical edge and bottom horizontal.
Assembling location after described fluoroplastic covering valve plate seal ring with its section central axis in the valve seat conical surface and top give prominence to valve plate outer rim arrange.
The beneficial effects of the utility model are: compared with prior art, valve plate seal ring adopts the fluoroplastic covering valve plate seal ring be made up of fluorine rubber or silicone rubber core circle and surface coated fluoroplastics layer thereof, its resistance to high temperature is improved, and can be used for food and oil based media, and good springiness, intensity are high; Especially, the section of fluoroplastic covering valve plate seal ring is wooden club shape, assembling location after described fluoroplastic covering valve plate seal ring with its section central axis in the valve seat conical surface and top give prominence to valve plate outer rim arrange, with the square rubber valve plate seal ring ratio of to be top the be arc of section configuration in prior art, contact tightr, easier extrusion-deformation, during work, its top can be done trace and swung thus can realize two way sealed along valve passage direction, improve the sealability of valve and extend valve working life.
Accompanying drawing explanation
Fig. 1 is the structural representation of the two eccentric cast-iron butterfly valve of rubber seal in prior art;
Fig. 2 is the structural representation of rubber valve plate seal ring in Fig. 1;
Fig. 3 is the structural representation of fluoroplastic covering valve plate seal ring;
Fig. 4 is the application of fluoroplastic covering valve plate seal ring in existing two eccentric cast-iron butterfly valve;
Fig. 5 is the application of fluoroplastic covering valve plate seal ring in the two eccentric cast-iron butterfly valve improved;
Fig. 6 is that fluoroplastic covering valve plate seal ring adopts the application in the two eccentric carbon steel butterfly valve of soldering stainless steel layer at valve seat;
Fig. 7 is that fluoroplastic covering valve plate seal ring adopts the application in the two eccentric carbon steel butterfly valve of roll extrusion bag circle stainless steel lining at valve seat.
In figure:
01 valve body, 02O type circle, 03 screw, 04 valve seat, 05 valve plate trim ring, 06 rubber valve plate seal ring, 07 valve plate, 08 valve shaft;
1 cast iron valve body, 2O type circle, 3 screws, 4 valve seats, 5 valve plate trim rings, 6 fluoroplastic covering valve plate seal rings, 61 fluoroplastics layers, 62 fluorine rubber or silicone rubber core circle, 7 screws, 8 valve plates, 81 clamp faces, 9 valve shafts; 10 pressure rings, 101 outward flanges, 1a carbon steel valve body, 2a1 circular cone body, 2a2 built-up welding stainless steel lining, 2a3 roll extrusion bag circle stainless steel lining.
Below in conjunction with drawings and Examples, the utility model is described in detail.
Embodiment
Fig. 3 illustrates a kind of soft seal double eccentric butterfly valve valve plate seal ring with fluoroplastic covering, comprise the valve plate seal ring be fixed thereon around valve plate outer rim, valve plate seal ring under valve plate closed condition is squeezed and contacts with the valve seat conical surface seal be arranged on valve channel inwall, of the present utility modelly be characterised in that described valve plate seal ring is a fluoroplastic covering valve plate seal ring 6 be made up of fluorine rubber or silicone rubber core circle 62 and surface coated fluoroplastics layer 61 thereof, its section configuration is by top semi-circular, the adduction hypotenuse of semicircle two ends round and smooth connection successively, the wooden club shape that vertical edge and bottom horizontal are formed, assembling location after fluoroplastic covering valve plate seal ring with its center line perpendicular to the valve seat conical surface and top give prominence to valve plate outer rim arrange.
Application examples 1
Fig. 4 illustrates the application of fluoroplastic covering valve plate seal ring 6 in two eccentric cast-iron butterfly valve, as shown in the figure, this pair of eccentric cast-iron butterfly valve, comprise the cast iron valve body 1 with cylindrical channel, valve shaft 9, the valve plate 8 be fixedly connected with described valve shaft 9, fluoroplastic covering valve plate seal ring 6, fix the valve plate trim ring 5 of this valve plate seal ring, seal by O type circle 2 and screw 3 the circular cone stainless steel valve seat 4 be fixed on valve body around valve channel inwall, fluoroplastic covering valve plate seal ring 6 and valve plate trim ring 5 are set with successively and are fixed on all shoulders of the ring that the outer rim of valve plate 8 is arranged by screw 7.Described fluoroplastic covering valve plate seal ring 6 behind assembling location with its section central axis in the conical surface of valve seat 4 and the outer rim that valve plate 8 is given prominence at top arrange.In actual fabrication, the clamp face 81 that described valve plate 8 clamps fluoroplastic covering valve plate seal ring is inclined-plane, realizes the section central axis of this valve plate seal ring in the conical surface of valve seat 4, can further improve sealability thus with this.Owing to have employed fluorine rubber or silicone rubber core circle and fluoroplastic covering, its resistance to high temperature is improved, and can be applicable to food, oil based media, especially the double layer construction of two kinds of materials is adopted to overcome the inelastic shortcoming of pure fluoroplastic, core circle adopts fluorine rubber or silicone rubber to have excellent elasticity on the one hand, its surface fluoroplastics layer 61 that coated hardness is larger again, further increase the intensity of fluoroplastic covering valve plate seal ring, its section is wooden club shape and the outer rim that valve plate 8 is given prominence at top is arranged, compare with the square rubber valve plate seal ring 06 of to be top the be arc of section configuration in the prior art shown in Fig. 2, when fluoroplastic covering valve plate seal ring extrudes valve seat, easier extrusion-deformation, in actual use, when tightening fastening screw trip bolt 7, extruded by valve plate trim ring 5 and can produce distortion equally, improve sealability, and at work, this fluoroplastic covering valve plate seal ring top can be done trace and swung thus can realize two way sealed along valve passage direction, improve the sealability of valve and extend working life.
Application examples 2
Fig. 5 illustrates the application of fluoroplastic covering valve plate seal ring 6 in the two eccentric cast-iron butterfly valve improved, as shown in the figure, identical with application examples 1, this pair of eccentric cast-iron butterfly valve, comprise the cast iron valve body 1 with cylindrical channel, valve shaft (not shown), the valve plate 8 be fixedly connected with described valve shaft, fluoroplastic covering valve plate seal ring 6, fix the valve plate trim ring 5 of this valve plate seal ring, around the circular cone stainless steel valve seat 4 that valve channel inwall is contacted with valve seal by O type circle 2, valve plate seal ring 6 and valve plate trim ring 5 are set with successively and are fixed on all shoulders of the ring that the outer rim of valve plate 8 is arranged by screw 7.Its improvement has set up pressure ring 10 with described valve seat 5 is concentric, the exterior edge face of described pressure ring 10 is provided with outward flange 101, described valve seat 5 exterior edge face is arranged the concave station of O type circle 3 described in setting-in, described pressure ring 10 to compress on the exterior edge face that O type circle 2 abuts in valve seat 4 with its interior edge face and the outward flange 101 of pressure ring 10 exterior edge face is sleeping is contained on described valve body 1 on the corresponding indent annulus platform 11 arranged, and is screwed into valve body by screw 3 through the outward flange 101 of pressure ring exterior edge face and is fixed on valve body 1.Like this, the screw hole be opened on valve seat exterior edge face is changed and is put on valve body 1, thus valve seat bore is increased in prior art, really make valve seat minimum flow path internal diameter can meet the requirement of butterfly valve design standard.As shown in Figure 5, in the two eccentric cast-iron butterfly valve of this improvement, described fluoroplastic covering valve plate seal ring 6 behind assembling location with its section central axis in the conical surface of valve seat 4 and the outer rim that valve plate 8 is given prominence at top arrange.In actual processing and fabricating, the clamp face 81 that described valve plate 8 clamps fluoroplastic covering valve plate seal ring is inclined-plane, realizes the section central axis of this valve plate seal ring in the conical surface of valve seat 4, can further improve sealability thus with this.The beneficial effect that should fluoroplastic covering valve plate seal ring 6 be adopted to produce in use-case is with application examples 1.
Application examples 3
Fig. 6 shows the application of fluoroplastic covering valve plate seal ring 6 in two eccentric carbon steel butterfly valve.The structure of this carbon steel butterfly valve comprise there is cylindrical channel carbon steel valve body 1a, valve shaft (not shown), the valve plate 8 be fixedly connected with described valve shaft, fluoroplastic covering valve plate seal ring 6, fixing described valve plate seal ring valve plate trim ring 5, adhere at the circular cone body 2a1 that valve channel inwall is wholely set with it stainless steel valve seat 2a that stainless steel lining formed by around valve plate 8, fluoroplastic covering valve plate seal ring 6 and valve plate trim ring 5 are set with successively and are fixed on all shoulders of the ring that the edge of valve plate is arranged.In this example, stainless steel lining piles the built-up welding stainless steel lining 2a2 be soldered on circular cone 2a1, can also stainless steel coil is welded on the conical surface, is then worked into the size of designing requirement and the stainless steel lining of roughness formation.Can find out, assembling location after fluoroplastic covering valve plate seal ring 6 with its section central axis in the valve seat conical surface and top give prominence to valve plate 8 outer rim arrange.
Identical with application examples 1, in actual fabrication, the clamp face 81 that described valve plate 8 clamps fluoroplastic covering valve plate seal ring 6 is inclined-plane, realizes the section central axis of this valve plate seal ring in the conical surface of valve seat, can further improve sealability thus with this.Adopt beneficial effect that fluoroplastic covering valve plate seal ring produces with application examples 1 in this example.
Application examples 4
Shown in Fig. 7 is still the application of fluoroplastic covering valve plate seal ring 6 in two eccentric carbon steel butterfly valve.Should use-case and application examples 3 be uniquely the roll extrusion bag circle stainless steel lining 2a3 be pressed on circular cone 2a1 unlike the stainless steel lining of stainless steel valve seat, remaining structure and working principle, beneficial effect be identical with application examples 3, and this does not repeat.
The above is only preferred embodiment of the present utility model, not does any pro forma restriction to structure of the present utility model.Every above embodiment is done according to technical spirit of the present utility model any simple modification, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (2)
1. a soft seal double eccentric butterfly valve valve plate seal ring with fluoroplastic covering, comprise the valve plate seal ring be fixed thereon around valve plate outer rim, valve plate seal ring under valve plate closed condition is squeezed and contacts with the valve seat conical surface seal be arranged on valve channel inwall, it is characterized in that described valve plate seal ring is a fluoroplastic covering valve plate seal ring be made up of fluorine rubber or silicone rubber core circle and surface coated fluoroplastics layer thereof, its section configuration is by top semi-circular, the adduction hypotenuse of semicircle two ends round and smooth connection successively, the wooden club shape that vertical edge and bottom horizontal are formed.
2. a kind of soft seal double eccentric butterfly valve valve plate seal ring with fluoroplastic covering according to claim 1, it is characterized in that assemble location after described fluoroplastic covering valve plate seal ring with its section central axis in the valve seat conical surface and top give prominence to valve plate outer rim arrange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520840818.4U CN205089996U (en) | 2015-10-27 | 2015-10-27 | Two eccentric butterfly valves of soft seal are with valve plate seal ring who has fluoroplastics covering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520840818.4U CN205089996U (en) | 2015-10-27 | 2015-10-27 | Two eccentric butterfly valves of soft seal are with valve plate seal ring who has fluoroplastics covering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205089996U true CN205089996U (en) | 2016-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520840818.4U Active CN205089996U (en) | 2015-10-27 | 2015-10-27 | Two eccentric butterfly valves of soft seal are with valve plate seal ring who has fluoroplastics covering |
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| Country | Link |
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| CN (1) | CN205089996U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106609848A (en) * | 2015-10-27 | 2017-05-03 | 天津银河阀门有限公司 | Valve plate sealing ring with fluoroplastic cladding layer for soft-sealed double eccentric butterfly valve |
| CN115013546A (en) * | 2022-07-14 | 2022-09-06 | 良工阀门集团有限公司 | Two-way seal structure and butterfly valve |
-
2015
- 2015-10-27 CN CN201520840818.4U patent/CN205089996U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106609848A (en) * | 2015-10-27 | 2017-05-03 | 天津银河阀门有限公司 | Valve plate sealing ring with fluoroplastic cladding layer for soft-sealed double eccentric butterfly valve |
| CN115013546A (en) * | 2022-07-14 | 2022-09-06 | 良工阀门集团有限公司 | Two-way seal structure and butterfly valve |
| CN115013546B (en) * | 2022-07-14 | 2023-03-14 | 良工阀门集团有限公司 | Two-way seal structure and butterfly valve |
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