CN205136730U - Three eccentric two -way all -metals butterfly valve sealed firmly - Google Patents
Three eccentric two -way all -metals butterfly valve sealed firmly Download PDFInfo
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- CN205136730U CN205136730U CN201520895364.0U CN201520895364U CN205136730U CN 205136730 U CN205136730 U CN 205136730U CN 201520895364 U CN201520895364 U CN 201520895364U CN 205136730 U CN205136730 U CN 205136730U
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- ring
- dish plate
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Abstract
The utility model discloses a three eccentric two -way all -metals butterfly valve sealed firmly has valve body and valve rod, is equipped with disk seat and dish board sub -assembly in the valve body, and the disk seat still is equipped with the clamping ring on placing the valve body inner wall in on the valve body inner wall, and the clamping ring is fixed the disk seat on the valve body, and dish board sub -assembly has the dish board, on a side end face of dish board, along the border of side end face is provided with the several breach, is equipped with the clamping ring on the breach, is equipped with full metallic sealing ring between dish board and clamping ring, and the clamping ring will full metallic sealing ring and be fixed. The utility model discloses a disk seat / sealing ring is forged by metal material completely and forms, and the surface is hardening treatment, has antiscour, stand wear and tear, high temperature and high pressure, long service life's advantage. The valve is to beginning to keeping superior two -way sealing performance, the biggest leakage rate <= 20ppm eventually. The sealed face of dish board is independent with the dish board, and the disk seat also is independent with the valve body, so sealed face of dish board and disk seat can be changed alone, needn't scrap whole deck valve door again.
Description
Technical field
The utility model relates to butterfly valve correlative technology field, is specifically related to a kind of three eccentric two-way full-metallic hard seal butterfly valve.
Background technique
Butterfly valve is Flap valve again, it is the simple modulating valve of a kind of structure, the butterfly valve that can be used for the switch control rule of low pressure pipeline medium refers to that closure member (flap or butterfly plate) is disk, a kind of valve reaching open and close is rotated around valve shaft, valve can be used for the flowing controlling all kinds fluids such as air, water, steam, various Korrosionsmedium, mud, oil product, liquid metal and radiating medium, and on pipeline, main rising is cut off and throttling action.Butterfly valve is as fluid line system for regulating or block the control unit of medium, and because structure is simple, volume is little, open and close the advantages such as rapid, its application becomes general just day by day.And constantly advance along with society, the working condition of fluid line system also becomes and becomes increasingly complex, under many circumstances, the working condition of butterfly valve application has the situation of high temperature, high pressure and bidirectional flow simultaneously, and common butterfly valve can not meet the requirement of fluid line system.
Just because of this, three eccentric two-way hard seal butterfly valve is developed in recent years, but because of its technology and technique be not also very perfect and ripe, so actual production and use in the middle of also there is a lot of defect.The valve seat of such as conventional three eccentric butterfly valve or seal ring structure are that stacked the forming of stainless steel thin slice and graphite flake is arranged on dish plate or valve body, and sealing surface is easy to the erosion being subject to fluid, and working life is very short.Such as valve seat and seal ring and valve are one, after valve seat or seal ring damage, need whole valve all to change, waste resource, also substantially increase maintenance cost.In addition, owing to using at high temperature under high pressure, therefore have unavoidably to leak and occur, therefore how to reduce leak-down rate as much as possible and prevent valve rod from blowing out, improve Safety performance, all to have much room for improvement and perfect.
Model utility content
The purpose of this utility model is to make up the deficiencies in the prior art, provides a kind of three eccentric two-way full-metallic hard seal butterfly valve, leak low, the life-span is long, easy to maintenance, is easy to better assembly.
In order to reach the purpose of this utility model, technological scheme is as follows:
A kind of three eccentric two-way full-metallic hard seal butterfly valve, there is valve body and valve rod, valve seat and dish plate assembly parts is provided with in valve body, it is characterized in that described valve interior wall having the second turning, described valve seat is placed in described second corner, valve interior wall is also provided with trim ring, described trim ring is fixed on valve body by socket head screw, and valve seat is fixed on valve body by described trim ring
Described dish plate assembly parts has dish plate, on a side end face of described dish plate, edge along described side end face is provided with several breach, described breach is provided with pressure ring, between dish plate and pressure ring, be provided with all-metal sealing ring, described pressure ring to be fixed on dish plate by socket head screw and to be fixed by described all-metal sealing ring.
Further, spacer is provided with between described all-metal sealing ring and dish plate.
Further, between described valve seat and valve body, be provided with left side sealing gasket, between described valve seat and trim ring, be provided with right side sealing gasket.
Further, described valve rod by pin and dish plate assembly parts fastening, the exposed end portion place of described pin is provided with a layer.
Further, between described valve rod and upper part valve body, be provided with Upper shaft sleeve, between valve rod and lower part valve body, be provided with Lower shaft sleeve.
Further, be also provided with filler between valve rod and valve body, described filler is positioned at the upside of Upper shaft sleeve, on the upside of filler, is provided with the Gland closed by described filler.
Further, described filler is made up of upper, middle and lower-ranking, and wherein the upper and lower are folder woven graphite rope wiry, and mesosphere is shaping graphite annulus.
Further, the surface of described all-metal sealing ring and valve seat, surfacing or heap are welded with cemented carbide.
The beneficial effect that the utility model has:
Valve seat/seal ring is forged by metallic material form completely, and surface cemented carbide does cure process, there is the advantage of antiscour, wear-resistant, high temperature high voltage resistant, long service life, even if open and close frequent, valve still can keep high sealability, has stopped the Multi-layer sealing structure not drawback such as resistance to erosion, has made valve have essential fire performance, greatly improve the working life of valve, the design service life on heating network was more than more than 30 years.
Adopt combined stuffing sealing system, guarantee valve maximum leakage rate≤20ppm, dynamic load sealing configuration can be selected, make filler permanent seal, extend the filler non-maintaining cycle.
Valve is to beginning to keeping superior two way sealed performance eventually, and valve seal does not rely on medium power, and the moment of torsion provided by drive unit completely realizes sealing, and valve all can reliable sealing under high and low pressure.
Dish plate sealing surface and dish plate are independently, valve seat and valve body are also independently, so dish plate sealing surface and valve seat can be changed simultaneously, when dish plate sealing surface or valve seat impaired time, whole deck valve door need not be scrapped again, only need change dish plate sealing surface and valve seat, greatly reduce cost of upkeep, also greatly reduce maintenance man-hours and overhaul intensity and difficulty.Meanwhile, Changable type bulk metal sealing surface, solves the different requirements of various different quality to seal face materials.
Accompanying drawing explanation
Fig. 1 is the cross section structure schematic diagram of the utility model three eccentric two-way full-metallic hard seal butterfly valve;
Fig. 2 is the side structure schematic diagram of the utility model three eccentric two-way full-metallic hard seal butterfly valve;
Fig. 3 is the structural representation of valve body and dish plate assembly parts in the utility model;
Fig. 4 is the structural representation of dish plate assembly parts in Fig. 3;
Fig. 5 is the fractionation structural representation of valve seat installation place;
Fig. 6 is the structural representation of valve rod bottom when having a step;
Fig. 7 is the structural representation of the another kind of embodiment's butterfly valve of the utility model.
Embodiment
Below in conjunction with embodiment, the utility model is further described, but protection domain of the present utility model is not only confined to embodiment.
Shown in composition graphs 1 and Fig. 2, a kind of three eccentric two-way full-metallic hard seal butterfly valve, has valve body 6 and valve rod 14, is provided with valve seat 10 and dish plate assembly parts 15 in valve body 6.Be provided with support 19 on the upside of valve body 6, support 19 is fixed on valve body 6 by hexagon head bolt 20, support 19 can be used for install the pneumatic or electric actuator of gear-box, and actuator is connected with valve rod 14 and drives described valve rod 14 to rotate.Have fluid passage in valve body 6, the inner chamber of fluid passage i.e. valve body 6, valve body is divided into upper and lower two-part by fluid passage.
Valve rod 14 is through the inner chamber of whole valve body 6, and the lower end of valve rod 14 is placed in the inside of lower part valve body 6, and in close valve rod 14 lower end, be provided with end cap 2, end cap 2 is fixed on the downside of valve body 6 by socket head screw 1.Between end cap 2 and valve body 6, be provided with pad 3, be provided with between end cap 2 upper side and valve rod 14 underpart and adjust pad 4.Spacing between adjustment pad 4 adjustable end cap 2 and valve rod 14, end cap 2 is closely abutted with valve rod 14 underpart, spacing between pad 3 adjustable end cap 2 and valve body 6, by pad 3 and adjustment pad 4, even if make when valve rod 14 length change, end cap 2 still can closely abut with valve rod 14, makes end cap 2 firmly prop up valve rod 14 lower end, serves the effect of firm valve rod 14 lower end.End cap 2, pad 3 and adjustment pad 4 constitute the anti-blow structure of bottom valve rod jointly.
Be provided with Lower shaft sleeve 9 between valve rod 14 and lower part valve body 6, be provided with divided ring 5 on the downside of Lower shaft sleeve 9, divided ring 5 outer wall closely abuts with valve body 6, and divided ring 5 plays the effect of fastening Lower shaft sleeve 9 and valve rod 14, prevents valve rod 14 from blowing out.The thickness of divided ring 5 is greater than the thickness of Lower shaft sleeve 9, with Lower shaft sleeve 9 be enclosed within Placement outside valve rod 14 unlike, divided ring 5 is embedded on valve rod 14, and therefore on valve rod 14 position of installing divided ring 5, be provided with fluting, divided ring 5 is embedded in described fluting.Further, in divided ring 5 place and part down, the thickness of the valve body 6 of its corresponding part is less (comparing the valve body that Lower shaft sleeve place is corresponding), therefore, has certain gap between the valve rod 14 below divided ring 5 and valve body 6.Gap location is convenient to install divided ring 5, certainly also can load the sealing parts of seal ring class at gap location.And at divided ring 5 with on the valve body 6 of lower 9 connecting parts, have a step, the upper side of divided ring 5 withstands on described step, makes whole valve rod 14 up to move.Shown in composition graphs 6, at the end portion of valve rod 14, also have a step 14-1 protruded to both sides, valve rod 14 has also become a Step Shaft, respective outer side edges anti-blow with bottom valve rod, and prevent valve rod 14 from blowing out, structure is firm stable more.Upper shaft sleeve 16 is provided with between valve rod 14 and upper part valve body 6, filler 17 is also provided with between valve rod 14 and valve body 6, filler 17 is positioned at the upside of Upper shaft sleeve 16, on the upside of filler 17, be provided with the Gland 18 closed by described filler 17, Gland 18 is fixed by stud, nut, plain washer and valve rod 14 and valve body 6.Filler 17, Gland 18, Upper shaft sleeve 16 together form the anti-blow structure in top, prevent valve rod 14 from blowing out.
Shown in composition graphs 5, outwards its inwall has the first turning 62, turning 61, second and turning, 63, three, the 3rd turning from valve body 6 is inner and is right angle type, wherein the first turning 61 and the 3rd turning 63 outwardly.Valve seat 10 is placed in the second turning 62 place, valve seat 10 comprises connected upper semisection and lower semisection, and the width of upper semisection is greater than lower semisection, and the upper side of upper semisection has the sealing surface of inclination, the connection of upper semisection and lower semisection is in step 101, and described step 101 is placed in the first turning 61 place.Valve body 6 inwall is also provided with trim ring 8, and trim ring 8 is fixed on valve body 6 by socket head screw 7, and valve seat 10 is fixed on valve body 6 by trim ring 8 simultaneously.Trim ring 8 is structures of a L-type, and the interior angle of L-type is just placed on the 3rd turning 63.Be provided with left side sealing gasket 12 between the lower semisection left surface of valve seat 10 and valve body 6, between valve seat 10 right flank and trim ring 8, be provided with right side sealing gasket 11.Valve seat 10 is fixed by trim ring 8, changes, need not change whole valve, greatly reduce cost of upkeep if valve seat 10 damages to take apart, also greatly reduces maintenance man-hours and overhauls intensity and difficulty.Valve seat 10 is matched with the first turning 61 by step 101, valve seat 10 is connected with valve body 6 and coordinates close and firm more, left side sealing gasket 12 can better be fixed on inside simultaneously.Therefore, preferably, except arranging a step on the left of valve seat 10, also can a step being also set on right side, making to be connected between valve seat 10 with trim ring 8 to coordinate close and firm more, also right side sealing gasket 11 can better be fixed on inside simultaneously.In addition, valve seat 10 surface overlaying cemented carbide, makes the sclerosis of valve seat 10 entirety, extends whole valve working life, reduces maintenance times.
Shown in composition graphs 3 and Fig. 4, dish plate assembly parts 15 has dish plate 15-1, on side (side near the trim ring 8) end face of described dish plate 15-1, the edge along described side end face is provided with several breach, and each described breach is provided with a pressure ring 15-5.Between dish plate 15-1 and pressure ring 15-5, be provided with all-metal sealing ring 15-3, pressure ring 15-5 to be fixed on dish plate 15-1 by socket head screw 15-4 and to be fixed by described all-metal sealing ring 15-3.Between all-metal sealing ring 15-3 and dish plate, be provided with spacer 15-2, spacer 15-2 makes all-metal sealing ring 15-3 can be fastened between pressure ring 15-5 and dish plate 15-1, and the all-metal sealing ring 15-3 of applicable different-thickness.The outer end of all-metal sealing ring 15-3 is protruded outside dish plate assembly parts 15, and the outer end of all-metal sealing ring 15-3 is provided with the seal face coordinated with sealing surface on valve seat 10.
All-metal sealing auxiliary structure, valve is made to have essential fire performance, the seal ring and the valve seat that have employed the forging of full-metallic stainless steel construct and seal ring surface spraying weld stellite, have the advantage of antiscour, wear-resistant, high temperature high voltage resistant, long service life, the design service life on heating network was more than more than 30 years.And seal ring is fixed by pressure ring 15-5 and socket head screw 15-4, for convenience detach and installation, changes if damage to take apart, need not change whole valve, greatly reduce cost of upkeep, also greatly reduces maintenance man-hours and overhauls intensity and difficulty.
Valve rod 14 fastening by pin 13 and dish plate assembly parts 15, the exposed end portion place of pin 13 is provided with a layer 21.The length of Upper shaft sleeve 16 and Lower shaft sleeve 9 is longer, is greater than the wall thickness of valve body 6, and the length of Upper shaft sleeve 16 is substantially equal to valve body 6 inner cavity top and is substantially equal to the distance of valve body 6 intracavity bottom to valve body 6 bottom to the length of the distance on valve body 6 top, Lower shaft sleeve 9.Valve rod 14 is located and guiding by the axle sleeve that lengthens, avoids valve rod 14 laterally offset that causes because lateral pressure impacts and causes stem packing place to be leaked.And the axle sleeve lengthened can reduce valve rod friction, ensure lowly to turn round operation square.
In the present embodiment, pad 3, left side sealing gasket 12, right side sealing gasket 11, spacer 15-2, filler 17 all adopt Expanded graphite.Preferably, filler 17 adopts precompression treatment, and whole filler 17 is made up of upper, middle and lower-ranking, and wherein the upper and lower use folder woven graphite rope wiry, and mesosphere is shaping graphite annulus, enhances anti-leak performance, and leakage rate can be less than 20ppm.And graphite annulus can enter bearing by preventing pollution thing.In addition, in order to strengthen anti-leak performance further, control the surface roughness of valve rod 14 and stuffing box, wherein valve rod 14 Roughness Surface on Control is between Ra0.4 ~ Ra0.8, stuffing box is Ra1.6, and wherein stuffing box comprises filler 17, Gland 18, Upper shaft sleeve 16 and valve body 6.
Continue shown in composition graphs 7, be another kind of example structure of the present utility model, wherein do not fit completely bottom valve seat 10 and between valve body 6, but have certain gap, and in this gap in be placed with Compress Spring 22; Equally, also can there is certain gap in inner side surface and the dish plate 15-1 of all-metal sealing ring 15-3, and place spring 22 at gap location.By reserving certain gap and placing spring, valve seat 10 or the seal ring of different size can be changed according to actual needs, and not need to change miscellaneous part, expand the Applicable scope of product.
Last it is noted that above embodiment only in order to illustrate the utility model and and technological scheme described by unrestricted the utility model, therefore, although this specification has been described in detail the utility model with reference to each above-mentioned embodiment, but, those of ordinary skill in the art is to be understood that, still can modify to the utility model or equivalent replacement, and all do not depart from technological scheme and the improvement thereof of spirit and scope of the present utility model, it all should be encompassed in right of the present utility model.
Claims (8)
1. a three eccentric two-way full-metallic hard seal butterfly valve, there is valve body (6) and valve rod (14), valve seat (10) and dish plate assembly parts (15) is provided with in valve body, it is characterized in that, described valve interior wall has the second turning (62), described valve seat is placed in described second corner, valve interior wall is also provided with trim ring (8), described trim ring is fixed on valve body by socket head screw (7), valve seat is fixed on valve body by described trim ring
Described dish plate assembly parts has dish plate (15-1), on a side end face of described dish plate, edge along described side end face is provided with several breach, described breach is provided with pressure ring (15-5), between dish plate and pressure ring, be provided with all-metal sealing ring (15-3), described pressure ring to be fixed on dish plate by socket head screw and to be fixed by described all-metal sealing ring.
2. three eccentric two-way full-metallic hard seal butterfly valve according to claim 1, is characterized in that, is provided with spacer (15-2) between described all-metal sealing ring (15-3) and dish plate.
3. three eccentric two-way full-metallic hard seal butterfly valve according to claim 1, it is characterized in that, be provided with left side sealing gasket (12) between described valve seat (10) and valve body (6), between described valve seat (10) and trim ring (8), be provided with right side sealing gasket (11).
4. three eccentric two-way full-metallic hard seal butterfly valve according to claim 1, is characterized in that, described valve rod fastening by pin (13) and dish plate assembly parts, and the exposed end portion place of described pin is provided with a layer (21).
5. three eccentric two-way full-metallic hard seal butterfly valve according to claim 1, is characterized in that, is provided with Upper shaft sleeve (16) between described valve rod and upper part valve body, is provided with Lower shaft sleeve (9) between valve rod and lower part valve body.
6. three eccentric two-way full-metallic hard seal butterfly valve according to claim 5, it is characterized in that, be also provided with filler (17) between valve rod and valve body, described filler is positioned at the upside of Upper shaft sleeve, on the upside of filler, be provided with the Gland (18) closed by described filler.
7. three eccentric two-way full-metallic hard seal butterfly valve according to claim 6, it is characterized in that, described filler is made up of upper, middle and lower-ranking, and wherein the upper and lower are folder woven graphite rope wiry, and mesosphere is shaping graphite annulus.
8. three eccentric two-way full-metallic hard seal butterfly valve according to claim 6, is characterized in that, the surface of described all-metal sealing ring and valve seat, surfacing or heap are welded with cemented carbide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520895364.0U CN205136730U (en) | 2015-11-11 | 2015-11-11 | Three eccentric two -way all -metals butterfly valve sealed firmly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520895364.0U CN205136730U (en) | 2015-11-11 | 2015-11-11 | Three eccentric two -way all -metals butterfly valve sealed firmly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205136730U true CN205136730U (en) | 2016-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520895364.0U Expired - Fee Related CN205136730U (en) | 2015-11-11 | 2015-11-11 | Three eccentric two -way all -metals butterfly valve sealed firmly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205136730U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105299285A (en) * | 2015-11-11 | 2016-02-03 | 上海东宝阀门制造有限公司 | Three-eccentric bidirectional all-metal hard-seal butterfly valve |
| CN108105401A (en) * | 2017-12-19 | 2018-06-01 | 樊东升 | A kind of low torque, bi-direction zero-leakage all-metal sealing dish valve |
| EP3770472A1 (en) | 2019-07-26 | 2021-01-27 | Buracco SAS | Improved throttle valve for transporting fluid under high pressure or under extreme pressure |
-
2015
- 2015-11-11 CN CN201520895364.0U patent/CN205136730U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105299285A (en) * | 2015-11-11 | 2016-02-03 | 上海东宝阀门制造有限公司 | Three-eccentric bidirectional all-metal hard-seal butterfly valve |
| CN108105401A (en) * | 2017-12-19 | 2018-06-01 | 樊东升 | A kind of low torque, bi-direction zero-leakage all-metal sealing dish valve |
| EP3770472A1 (en) | 2019-07-26 | 2021-01-27 | Buracco SAS | Improved throttle valve for transporting fluid under high pressure or under extreme pressure |
| FR3099222A1 (en) * | 2019-07-26 | 2021-01-29 | Buracco Sas | Advanced butterfly valve for conveying fluid under high pressure or extreme pressure |
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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: 20160406 Termination date: 20161111 |