CN204533789U - A kind of high temperature butterfly valve valve shaft seal - Google Patents
A kind of high temperature butterfly valve valve shaft seal Download PDFInfo
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- CN204533789U CN204533789U CN201520189378.0U CN201520189378U CN204533789U CN 204533789 U CN204533789 U CN 204533789U CN 201520189378 U CN201520189378 U CN 201520189378U CN 204533789 U CN204533789 U CN 204533789U
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- valve shaft
- boss
- stuffing box
- valve
- filler
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Abstract
The utility model relates to a kind of high temperature butterfly valve valve shaft seal, and it comprises valve shaft, Stuffing box, compound seal body, filler and Gland; With ring packing boss on valve shaft, outside valve shaft, be provided with Stuffing box, in Stuffing box by adjacent boss to the direction away from boss, set gradually the compound seal body of close proximity, filler and Gland, tight Gland to be fixed on Stuffing box and to compress filler.Boss and compound seal body realize end face seal, and have the gap of more than 5 millimeters or 5 millimeters between boss and Stuffing box, have the gap of more than 5 millimeters or 5 millimeters between clamping sleeve and valve shaft.Valve shaft at high temperature produces compound seal body when deformation even bends can make fine setting, make valve shaft and still combine closely between compound seal body and clamping sleeve, and frictional force is constant.The utility model is provided with out sweeps mouth 4, and blow valve port passes into external wind and the medium between valve shaft and seal arrangement can be blown off, and prevents blocking.
Description
Technical field
A kind of high temperature butterfly valve valve shaft seal, particularly high temperature butterfly valve valve shaft seal in petrochemical equipment.
Background technique
Refer to Fig. 1 and Fig. 2, it is cut-away view and the A-A sectional drawing thereof of Present Domestic high temperature butterfly valve valve shaft seal.As seen from the figure, the valve shaft seal of this high temperature butterfly valve comprises Stuffing box 3, filler 4, gland 7 and the first neutral gear, utilize the first neutral gear 71 that gland is fixed, gland 7 is compressed filler 4 and makes it closely be filled in the gap between valve shaft and Stuffing box 3, realize radial seal.At this moment valve shaft will have certain frictional force when rotating and between filler, and when valve shaft, at high temperature to produce deformation even bending, and between valve shaft sealing place and bearing, concentricity can not ensure, frictional force strengthens, and opens difficulty, even stuck, causes butterfly valve to use.Moreover the medium of circulation in flue slowly can corrode filler under the effect of the pressure and clog the gap between valve shaft and filler, causes valve shaft stuck, makes butterfly valve use.
Because the defect that above-mentioned existing high temperature butterfly valve valve shaft seal exists, the present inventor is based on being engaged in the practical experience and professional knowledge that this type of product specification manufacture enriches for many years, and coordinate the utilization of scientific principle, actively in addition research and innovation, to founding a kind of high temperature butterfly valve valve shaft seal of new structure, general existing high temperature butterfly valve valve shaft seal can be improved, make it have more practicability.Through constantly research, design, and through repeatedly studying sample and after improving, finally creating the utility model had practical value.
Summary of the invention
The purpose of this utility model is, overcome the defect that existing high temperature butterfly valve valve shaft seal exists, and a kind of valve shaft seal of high temperature valve shaft of new structure is provided, technical problem to be solved makes it realize end face seal by the boss on valve shaft and compound seal body, make sealing device still can realize sealing effect when axle high temperature deformation, and set out and sweep mouth to pass into the medium between gas clean-up axle and seal arrangement, in case be blocking, thus be more suitable for practicality.
The purpose of this utility model and solve its technical problem be adopt following technological scheme realize.According to a kind of high temperature butterfly valve valve shaft seal that the utility model proposes, comprise valve shaft, Stuffing box, compound seal body, filler and Gland, with ring packing boss on described valve shaft; Described Stuffing box is located at outside valve shaft, in Stuffing box, by adjacent boss to the direction away from boss, set gradually the compound seal body of close proximity, filler and Gland, wherein Gland is pressed on filler, filler is pressed on compound seal body, and compound seal body is pressed on the end face of boss.
The purpose of this utility model and solve its technical problem and can also be further achieved by the following technical measures.
Aforesaid valve shaft seal, wherein more comprises blow valve port.
Aforesaid valve shaft seal, wherein said blow valve port is located on Stuffing box, is positioned at outside boss and the position of adjacent compound seal body.
Aforesaid valve shaft seal, wherein more comprises clamping sleeve, and this clamping sleeve is enclosed within valve shaft, and its section is inverted L-shaped, and its one end is radially pressed between compound seal body and filler, and its one end is vertically located between filler and valve shaft.
Aforesaid valve shaft seal, wherein said clamping sleeve has gap along between one end end face and Gland of valve shaft axis.
Aforesaid valve shaft seal, has the gap being not less than 5 millimeters between wherein said clamping sleeve and valve shaft.
Aforesaid a kind of high temperature butterfly valve valve shaft seal, has the gap being not less than 5 millimeters between the external diameter of wherein said boss and the interior warp of described Stuffing box.
Aforesaid valve shaft seal, is characterized in that, wherein said Gland is fixed on Stuffing box.
Aforesaid valve shaft seal, wherein said Gland has gap away between one end of filler and valve shaft.
The utility model compared with prior art has obvious advantage and beneficial effect.By technique scheme, a kind of high temperature butterfly valve of the utility model valve shaft seal can reach suitable technological progress and practicability, and has the extensive value in industry, and it at least has following advantages:
Valve shaft realizes section with ring packing boss and compound seal body and seals, and has the gap of more than 5 millimeters or 5 millimeters, have the gap of more than 5 millimeters or 5 millimeters between clamping sleeve and valve shaft between boss and Stuffing box.Valve shaft at high temperature produces compound seal body when deformation even bends can make fine setting, make valve shaft and still combine closely between compound seal body and clamping sleeve, and frictional force is constant.Also add out and sweep mouth, blow valve port passes into external wind and the medium between valve shaft and seal arrangement can be blown off, and prevents blocking.
Accompanying drawing explanation
Fig. 1 is the cut-away view of existing high temperature butterfly valve valve shaft seal;
Fig. 2 is the A-A sectional drawing of Fig. 1;
Fig. 3 is the cut-away view of the utility model high temperature butterfly valve valve shaft seal;
Fig. 4 is the B-B sectional drawing of Fig. 3.
[primary component symbol description]
1: valve shaft
11: boss
2: valve body
3: Stuffing box
31: blow valve port
4: filler
5: compound seal body
6: clamping sleeve
7: Gland
8: supporting sleeve
9: bearing
Embodiment
For further setting forth the utility model for the technological means reaching predetermined goal of the invention and take and effect, below in conjunction with accompanying drawing and preferred embodiment, to according to a kind of its embodiment of high temperature butterfly valve valve shaft seal, structure, feature and the effect thereof that the utility model proposes, be described in detail as follows.
Refer to Fig. 3 and Fig. 4, it is cut-away view and the B-B sectional drawing thereof of a kind of high temperature butterfly valve valve of the utility model embodiment shaft seal.As seen from the figure, a kind of high temperature butterfly valve valve shaft sealing device of the utility model embodiment, comprises valve shaft 1, Stuffing box 3, compound seal body 5, filler 4, clamping sleeve 6, Gland 7.
Wherein valve shaft 1 is with ring packing boss 11, and Stuffing box 3 is located at the outside of valve shaft 1, has the gap of more than 5 millimeters or 5 millimeters between the external diameter of the internal diameter of Stuffing box 3 and the boss 11 of valve shaft 1.
In Stuffing box 3, by adjacent boss to away from boss, be provided with compound seal body 5, clamping sleeve 6, filler 4 and Gland 7 successively.
Compound seal body 5 is pressed on boss, realizes end face seal with boss.The filler 4 that adjacent compound seal body 5 is arranged is pressed on compound seal body 5 by Gland 7.Gland 7 one end is pressed on filler 4, and the other end is fixed on Stuffing box.
In order to prevent filler from spilling from valve shaft side when being squeezed, the utility model embodiment is also provided with clamping sleeve 6.The section of clamping sleeve 6 is inverted L-shaped, and its one end along valve shaft 1 radial direction is pressed between compound seal body 5 and filler 4, and end face is concordant with the end face of compound seal body 5; Its one end along valve shaft 1 axis between valve shaft 1 and filler 4, and and there is between valve shaft 1 gap of more than 5 millimeters or 5 millimeters, and also have certain interval between the end face in this direction and Gland.
For the ease of installing described seal arrangement, valve shaft outboard structure is divided into Stuffing box and supporting sleeve, is bolted between Stuffing box and supporting sleeve.Gland 7 is positioned at inside supporting sleeve near Stuffing box and supporting sleeve joint away from one end of boss, its end face is oval, supporting sleeve is stretched out through the mouth that supporting sleeve is outputed in the two ends of the major axis of this ellipse, and the two ends of stretching out supporting sleeve have bolt hole, utilize bolt that this gland is fixed on Stuffing box, Gland 7 is pressed on filler 4, makes the tight space of filling in clamping sleeve 6 and Stuffing box 3 of filler 4.
Due between the clamping sleeve 6 described in the utility model embodiment and valve shaft 1, between boss 11 and Stuffing box 3, all there is the gap of more than 5 millimeters or 5 millimeters, valve shaft 1 at high temperature produces compound seal body 5 when deformation even bends can make fine setting, make valve shaft 1 and still combine closely between compound seal body 5 and clamping sleeve 6, and frictional force is constant.
The utility model one embodiment, on Stuffing box 3, outside boss 11, the position of adjacent compound seal body 5, is also provided with blow valve port 31.Ventilate in the gap between Stuffing box and valve shaft by blow valve port 31, the medium in seal arrangement is blown off, to keep the gap of valve shaft and sealing means, prevent valve shaft from blocking.
The utility model high temperature butterfly valve valve shaft seal also can be used for the sealing of high temperature baffle plate valve shaft.
The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, although the utility model discloses as above with preferred embodiment, but and be not used to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solutions of the utility model, according to technical spirit of the present utility model to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (9)
1. a high temperature butterfly valve valve shaft seal, comprises valve shaft, Stuffing box, compound seal body, filler and Gland, it is characterized in that:
With ring packing boss on described valve shaft;
Described Stuffing box is located at outside valve shaft, in Stuffing box, by adjacent boss to the direction away from boss, set gradually the compound seal body of close proximity, filler and Gland, wherein Gland is pressed on filler, filler is pressed on compound seal body, and compound seal body is pressed on the end face of boss.
2. valve shaft seal according to claim 1, is characterized in that, wherein more comprise blow valve port.
3. valve shaft seal according to claim 2, is characterized in that, wherein said blow valve port is located on Stuffing box, is positioned at outside boss and the position of adjacent compound seal body.
4. valve shaft seal according to claim 1 and 2, is characterized in that, wherein more comprise clamping sleeve, this clamping sleeve is enclosed within valve shaft, its section is inverted L-shaped, and its one end is radially pressed between compound seal body and filler, and its one end is vertically located between filler and valve shaft.
5. valve shaft seal according to claim 4, is characterized in that, wherein said clamping sleeve has gap along between one end end face and Gland of valve shaft axis.
6. valve shaft seal according to claim 4, is characterized in that, has the gap being not less than 5 millimeters between wherein said clamping sleeve and valve shaft.
7. a kind of high temperature butterfly valve valve shaft seal according to claim 1, is characterized in that having the gap being not less than 5 millimeters between the external diameter of wherein said boss and the interior warp of described Stuffing box.
8. valve shaft seal according to claim 1, is characterized in that, wherein said Gland is fixed on Stuffing box.
9. valve shaft seal according to claim 1, is characterized in that, wherein said Gland has gap away between one end of filler and valve shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520189378.0U CN204533789U (en) | 2015-03-31 | 2015-03-31 | A kind of high temperature butterfly valve valve shaft seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520189378.0U CN204533789U (en) | 2015-03-31 | 2015-03-31 | A kind of high temperature butterfly valve valve shaft seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204533789U true CN204533789U (en) | 2015-08-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520189378.0U Active CN204533789U (en) | 2015-03-31 | 2015-03-31 | A kind of high temperature butterfly valve valve shaft seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204533789U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104712841A (en) * | 2015-03-31 | 2015-06-17 | 洛阳兴罡石化设备有限公司 | Sealing device for valve shaft of high-temperature butterfly valve |
-
2015
- 2015-03-31 CN CN201520189378.0U patent/CN204533789U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104712841A (en) * | 2015-03-31 | 2015-06-17 | 洛阳兴罡石化设备有限公司 | Sealing device for valve shaft of high-temperature butterfly valve |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |