CN202188137U - Blast furnace connection-rod type cut-off butterfly valve - Google Patents
Blast furnace connection-rod type cut-off butterfly valve Download PDFInfo
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- CN202188137U CN202188137U CN2011202616170U CN201120261617U CN202188137U CN 202188137 U CN202188137 U CN 202188137U CN 2011202616170 U CN2011202616170 U CN 2011202616170U CN 201120261617 U CN201120261617 U CN 201120261617U CN 202188137 U CN202188137 U CN 202188137U
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Abstract
The utility model discloses a blast furnace connection-rod type cut-off butterfly valve, comprising a valve body, a valve rod and a butterfly plate, wherein a valve cavity perforating the valve body is arranged in the valve body, an annular valve seat is arranged on the inner wall of the valve body, the valve rod is mounted on the valve body, the butterfly plate is fixedly connected with the valve rod and rotates along the valve rod in the valve cavity of the valve body, a sealing structure is formed by a contact surface between the valve seat of the valve body and the outer edge of the butterfly plate; a filler compaction sealing structure or a butterfly spring filler pre-tension sealing structure is arranged between the inner holes on the two ends of the valve body and the valve rod. A single-rod type or a double-rod type butterfly plate adjustment mechanism is arranged between the valve body and the valve rod. The sealing performance is improved due to the butterfly plate sealing structure of the cut-off butterfly valve, the filler compaction sealing structures on the two ends of the valve rod and a butterfly plate adjustment mechanism for adjusting the parallelism of the butterfly plate and the valve seat sealing surface. The cut-off butterfly valve has features of simple application, reliable performance, prolonged service life, small volume, light weight, small on-off power and high price-performance ratio and is suitable for the low-temperature medium cut-off operation condition in a blast furnace iron-making system.
Description
Technical field
The utility model relates to the cut-off valve that a kind of blast furnace process is used, and especially a kind of blast furnace linkage type cuts off butterfly valve.
Background technique
In the blast furnace hot blast stove system, use a large amount of blast furnace linkage types at coal gas, air, fume pipe and cut off butterfly valve.Blast furnace process is particularly strict to the seal request that the blast furnace linkage type cuts off butterfly valve, if the blast furnace linkage type cuts off the poorly sealed generation that gas leakage can take place, be prone to cause blast and personal injury major accident of butterfly valve.Existing blast furnace linkage type cuts off butterfly valve and has two big disadvantages: the one, and butterfly plate sealing surface and sealing surface of seat that existing blast furnace linkage type cuts off butterfly valve are plane structure; In the work after the butterfly plate pressure-bearing sealing surface can produce warpage; Cause the sealing surface bad connection; Influence sealing effect, occur easily between butterfly plate sealing surface and sealing surface of seat leaking promptly usually said interior leakage phenomenon; The 2nd, what existing blast furnace linkage type cut off butterfly valve valve rod two ends is sealed into the single entry sealing configuration, is prone to leak outside, and promptly the gas in the valve leaks in the air beyond the valve along the valve rod two ends and goes.There is interior the leakage and the phenomenon that leaks outside because existing blast furnace linkage type cuts off butterfly valve, often cause blast furnace staying to stop production, have a strong impact on and cut off the butterfly valve normal running, cause blast furnace process can't carry out normal operation.For this reason, develop that a kind of good seal performance, volume are little, in light weight, that service-strong cuts off the butterfly valve door is very necessary.
Summary of the invention
Cut off the above-mentioned technical problem that the butterfly valve door exists in order to solve the existing blast furnace linkage type of system for blast furnace ironmaking; Provide a kind of blast furnace linkage type to cut off butterfly valve hereby, this valve seal is tight, is easy to open; Guarantee normal smelting operation, and can adapt to blast furnace ironmaking medium cut-out operating mode.
The technological scheme that the utility model adopted is following:
The blast furnace linkage type cuts off butterfly valve; Comprise valve body, valve rod, butterfly plate, fixing rod; Be provided with the valve pocket that connects valve body in the valve body, valve interior wall is provided with ring-shaped valve seats, and valve rod is installed on the valve body; Butterfly plate is fixedly connected with valve rod and rotates in the valve body valve pocket around valve rod, constitutes sealing configuration by the valve seat of said valve body and the surface of contact between the butterfly plate outer; Be provided with filler between said valve body two ends endoporus and the valve rod and compress sealing configuration or butterfly spring filler pretension sealing configuration.
The contact end face of said valve interior wall valve seat is through built-up welding or surfacing martensite type stainless steel or Austenitic and the sealing plane that forms after processing grinding.
The valve seat of said valve interior wall contact end face is that the groove of this valve seat end face is through built-up welding or surfacing martensite type stainless steel or Austenitic and the sealing plane that forms after processing grinding.
Said butterfly plate is that the arcuate zone straight flange of whole punching press is along structure.
The corresponding contact end face of said butterfly plate and said valve seat is a formed sealing female cone hole face after selecting Austenitic stainless steel or built-up welding of martensite type stainless steel or surfacing for use and processing grinding.
The corresponding contact end face of said butterfly plate and said valve seat is groove formed sealing female cone hole face after selecting Austenitic stainless steel or the built-up welding of martensite type stainless steel or surfacing for use and processing grinding of this butterfly plate corresponding end-faces.
Said butterfly plate seal f ace width is 8mm, and the sealing surface of seat width is 2-3 a times of butterfly plate seal f ace width.
The ratio 1:1.1 to 3 of said butterfly plate sealing surface hardness number and sealing surface of seat hardness number.
Said filler compresses the two ends that sealing configuration is positioned at valve body and valve rod; Pack into successively between said valve body two ends endoporus and the valve rod axle sleeve, drip ring, first layer combined packing, stuffing box, second layer combined packing, Gland; Said Gland is connected with stuffing box through fastening piece, and said stuffing box is fixedly connected with valve body through fastening piece.
Said butterfly spring filler pretension sealing configuration places between valve body inner bore and the valve rod; Between said valve body inner bore and valve rod, pack into successively axle sleeve, drip ring, combined packing, gland and pressing plate; On the gland step, place butterfly spring; Adopt fastening piece that pressing plate is compressed butterfly spring, and pressing plate is connected with valve body.
Said combined packing material is that Expanded graphite adds graphite fiber, lubricating function is not only arranged and also be heated after have a certain amount of expansion, make sealing more reliable.
Said axle sleeve is that nanometer is electroplated self lubrication bearing, and nanometer is electroplated the self lubrication bearing performance and is superior to common self lubrication bearing.
This blast furnace linkage type cuts off butterfly valve, between said valve body and linkage mechanism, is provided with single lever-type butterfly plate controlling mechanism or double rod type butterfly plate controlling mechanism.
Said single lever-type butterfly plate controlling mechanism; Be arranged in said blast furnace linkage type and cut off the valve body of butterfly valve and the single fixing rod joint of linkage mechanism; Both sides fixedly install the adjusting screw rod seat respectively before and after the inwall of said valve body and the fixing rod joint; The end of the adjusting screw rod that is connected with said adjusting screw rod seat is fixed on the fixing rod bi-side respectively, constitutes the butterfly plate controlling mechanism of this cut-out butterfly valve.
Said double rod type butterfly plate controlling mechanism; Be arranged in two fixing rods difference joint that said blast furnace linkage type cuts off the valve body and the linkage mechanism of butterfly valve; The inwall of said valve body fixedly installs the adjusting screw rod seat respectively in both sides, front and back, joint respectively with two fixing rods; The end of the adjusting screw rod that is connected with said adjusting screw rod seat is fixed on two fixing rod bi-side respectively, constitutes the butterfly plate controlling mechanism of this cut-out butterfly valve.
The exterior edge face of said adjusting screw rod seat and the threaded connection place of adjusting screw rod are provided with lock nut.
This blast furnace linkage type cuts off the butterfly plate sealing configuration of butterfly valve and the sealing configuration at valve rod two ends, and make the blast furnace linkage type cut off the butterfly valve seal performance and improve, and simple suitable, reliable performance.This blast furnace linkage type cuts off butterfly valve and has thoroughly eradicated existing blast furnace linkage type and cut off that leaking outside often appears in butterfly valve and interior leakage conductance causes blast furnace stopping production damping down, energy waste; Have a strong impact on and cut off the butterfly valve normal running; Cause blast furnace process can't carry out normal operation, brought the very disadvantage of large economy loss to the user; This butterfly valve interior leakage can not occur and leak outside when being used as gas stop valve, avoid causing gaseous detonation crisis field personnel personal safety; Also avoided simultaneously gas to butterfly plate and valve body seriously wash away damage, valve improved working life, realized this cut-outs butterfly valve efficiently, longevity, reliably.
This blast furnace linkage type cuts off the butterfly plate controlling mechanism of butterfly valve; The parallelism of butterfly plate sealing surface and sealing surface of seat can be adjusted; Sealability improves, and this regulation structure is simply suitable, reliable performance; The working life of cutting off butterfly valve can be prolonged, cryogenic media cut-out operating mode in the system for blast furnace ironmaking can be adapted to.
This cuts off butterfly valve, volume is little, in light weight, cost performance is high, can adapt to cryogenic media cut-out operating mode in the system for blast furnace ironmaking.
Description of drawings
Fig. 1 cuts off butterfly valve (single lever-type) plan view for the blast furnace linkage type;
Fig. 2 cuts off butterfly valve (single lever-type) left view for the blast furnace linkage type;
Fig. 3 cuts off butterfly valve (double rod type) plan view for the blast furnace linkage type;
Fig. 4 cuts off butterfly valve (double rod type) left view for the blast furnace linkage type;
Fig. 5 cuts off the butterfly plate and the valve seal structural drawing of butterfly valve for the blast furnace linkage type;
Fig. 6 compresses sealed structure chart for the filler that the blast furnace linkage type cuts off butterfly valve;
Fig. 7 cuts off butterfly valve butterfly spring filler pretension sealed structure chart for the blast furnace linkage type.
Embodiment
Introduce the embodiment of the utility model below in conjunction with accompanying drawing.
Like Fig. 1, shown in Figure 2, this blast furnace linkage type cuts off butterfly valve, is provided with the valve pocket that connects valve body in the valve body 1; Be equipped with rotating butterfly plate 2 in the valve pocket; Butterfly plate 2 is connected through bearing pin or flat key with connecting rod 3, and connecting rod 3 is fixedly mounted on the valve rod 4, is equipped with filler pressed sealing device 17 between valve rod 4 two ends and the valve body 1 two ends endoporus; Valve rod 4 right-hand members stretch out valve body 1; The right-hand member of valve body 1 is equipped with support 18 through bolt, and support 18 is equipped with drive unit 5 through bolt, and the delivery outlet of drive unit 5 is fixedly connected with valve rod 4.The butterfly plate controlling mechanism that the blast furnace linkage type cuts off butterfly valve is positioned at single fixing rod 19 and valve body 1 joint one end.At the inwall and the fixing adjusting screw rod seat 20 of each welding of both sides, fixing rod 19 surface of contact front and back of valve body 1, adjusting screw rod 21 ends of matching thread connection hold out against fixing rod 19 bi-side with it, and fixing rod 19 is fixed.Also be provided with lock nut in the exterior edge face of adjusting screw rod seat 20 and the threaded connection place of adjusting screw rod 21, in order to prevent the loosening of adjusting screw rod 21 and to come off.
Fig. 3, Fig. 4 represent that the blast furnace linkage type cuts off the schematic representation of butterfly valve double rod type butterfly plate controlling mechanism.Be the adjusting screw rod 21 that double rod type butterfly plate controlling mechanism has adopted two fixing rods, 19, two cover adjusting screw rod seats 20 to be connected with matching thread with it with the difference of Fig. 1, single lever-type butterfly plate controlling mechanism shown in Figure 2.
Shown in Figure 5, valve body 1 inwall is welded with valve seat 6.Valve seat 6 one side end face machined grooves and in groove built-up welding or surfacing martensite type stainless steel or Austenitic stainless steel, form smooth valve body sealing surface 7 through the turning grinding.Built-up welding or surfacing Austenitic stainless steel or martensite type stainless steel after the butterfly plate 2 outer end face machined grooves form butterfly plate O-ring frustum through turning, grinding, and this butterfly plate O-ring frustum internal taper hole face is a butterfly plate sealing surface 8.The O-ring frustum face 8 of the sealing plane 7 of said valve body and valve seat 6 and butterfly plate 2 contacts tight than pure flat face seal; It when the two sealing surface does not have pressure the line contact; Its inner conical surface 8 can produce a certain amount of compensation distortion after butterfly plate 2 pressure-bearings, makes the two be the face contact, and sealability is better.Butterfly plate 2 is the whole punching press arcuate structure of steel plate, and good rigidity is even at the active force that butterfly plate sealing surface 8 is acted on the valve body and valve seat sealing surface 7, has improved sealing reliability, has stopped sealing surface because the wear out failure that unbalance stress causes.Butterfly plate 2 is different with the hardness of valve seat 6 corresponding sealing surfaces; Butterfly plate sealing surface hardness number is 1:1.1-3 with the ratio of sealing surface of seat hardness number, and butterfly plate 2 is when pressure-bearing, and sealing surface 8 is because the low micro-deformation that produces of hardness; Fit closelyr with valve body sealing surface, further improved the sealing of valve.Butterfly plate 2 is different with the width of valve seat 6 corresponding sealing surfaces 8, and butterfly plate sealing surface 8 width are 8mm, and sealing surface of seat 7 width are 2-3 times of butterfly plate sealing surface 8 width.After valve uses a period of time; Because the wearing and tearing running orbit can change; Because sealing surface of seat 7 width are bigger than butterfly plate sealing surface 8 width values, even if butterfly plate 2 produces displacement because track changes, butterfly plate sealing surface 8 is also still in sealing surface of seat 7 width ranges; Still can with sealing surface of seat 7 fine sealings, improved working life.
Shown in Figure 6; The filler that the blast furnace linkage type cuts off butterfly valve compresses sealing configuration; Between valve body 1 two ends endoporus and the valve rod 41, the nanometer of packing into is successively electroplated self lubrication bearing 9, drip ring 10, first layer combined packing 11, stuffing box 12, second layer combined packing 13, Gland 14.Stuffing box 12 is fixedly connected with valve body 1 through fastening piece 16.Gland 14 is connected with stuffing box 12 through fastening piece 15.Said stuffing seal is located at the two ends of valve rod 4; Adopt two groups of compound seals, seal combination filler 11 and 13 its materials are that Expanded graphite adds graphite fiber, and its sealability is apparently higher than traditional mono-layer graphite braided packing; It not only has lubricating function; And have a certain amount of expansion after being heated, and make sealing more reliable, solved the easy disadvantage that leaks outside of existing butterfly valve.The nanometer self lubrication bearing is better than general self lubrication bearing wear-resisting property, long service life.
Shown in Figure 7; The blast furnace linkage type cuts off the butterfly spring filler pretension sealing configuration of butterfly valve; The nanometer of packing into successively between valve body 1 endoporus and the valve rod 4 is electroplated self lubrication bearing 9, filler 11, drip ring 10, filler 13, gland 22; Filler 11, filler 13 are seal combination fillers that Expanded graphite adds the graphite fiber composite, and diagram is that filler 11,13 is placed on drip ring 10 both sides respectively, can make filler obtain sufficient lubrication.On gland 22 steps, place standard piece butterfly spring 24, adopt double-screw bolt and nut combinations fastening piece 25 that pressing plate 23 is compressed butterfly spring 24, and pressing plate 23 is connected with valve body 1.Can form pressure to pressing plate 23 through tightening nut, pressure acts in the stuffing box packing 11,13 through pressing plate 23, butterfly spring 24, gland 22, and 11,13 pairs of valve rod 4 external parts of stuffing box packing seal, and prevent that gas from escaping from valve rod.When the influence that receives operating mode, stuffing box packing 11,13 elasticity weaken or fastening piece 25 when loosening trend is arranged, and the elastic potential energy that butterfly spring 24 is stored discharges, and has kept the lasting pressure to stuffing box packing 11,13, has stoped the loosening of fastening piece 25.
This blast furnace linkage type cuts off butterfly valve and is installed in the blast furnace pipeline, and working medium is gases such as air, coal gas, flue gas.The function of this cut-out butterfly valve door is: accomplish the unlatching of butterfly plate 2 or close the circulation or the cut-out of realization medium by command request.
The blast furnace linkage type seals firmly and cuts off the butterfly valve working procedure: the unlatching of butterfly valve: see Fig. 1 and Fig. 2; When butterfly plate 2 is positioned at closed condition, control button, drive unit 5 actions; Driving valve rod 4 turns clockwise; Valve rod 4 rotates and 3 motions of drivening rod mechanism, and linkage mechanism 3 drives butterfly plate 2 again and turns clockwise, and the butterfly plate half-twist has promptly been accomplished the unlatching of valve.
Closing of butterfly valve: see Fig. 1 and Fig. 2; When butterfly plate 2 is positioned at opening state, control button, drive unit 5 actions; Driving valve rod 4 is rotated counterclockwise; Valve rod 4 rotations have driven linkage mechanism 3 motions again, and linkage mechanism 3 drives butterfly plate 2 again and is rotated counterclockwise, and half-twist has promptly been accomplished closing of valve.
Claims (18)
1. a blast furnace linkage type cuts off butterfly valve; Comprise valve body, valve rod and butterfly plate; Be provided with the valve pocket that connects valve body in the valve body, valve interior wall is provided with ring-shaped valve seats, and valve rod is installed on the valve body; Butterfly plate is fixedly connected with valve rod and rotates in the valve body valve pocket around valve rod, it is characterized in that: constitute sealing configuration by the valve seat of said valve body and the surface of contact between the butterfly plate outer; Be provided with filler between said valve body two ends endoporus and the valve rod and compress sealing configuration or butterfly spring filler pretension sealing configuration.
2. blast furnace linkage type according to claim 1 cuts off butterfly valve, and it is characterized in that: the contact end face of said valve interior wall valve seat is through built-up welding or surfacing martensite type stainless steel or Austenitic stainless steel and the sealing plane that forms after processing grinding.
3. blast furnace linkage type according to claim 1 cuts off butterfly valve, it is characterized in that: the valve seat contact end face of said valve interior wall is that groove at this valve seat end face is through built-up welding or surfacing martensite type stainless steel or Austenitic stainless steel and the sealing plane that forms after processing grinding.
4. blast furnace linkage type according to claim 1 cuts off butterfly valve, it is characterized in that: said butterfly plate is that the arcuate zone straight flange of whole punching press is along structure.
5. cut off butterfly valve according to claim 1 or 4 described blast furnace linkage types; It is characterized in that: the corresponding contact end face of said butterfly plate and said valve seat is a formed sealing female cone hole face after selecting Austenitic stainless steel or built-up welding of martensite type stainless steel or surfacing for use and processing grinding.
6. cut off butterfly valve according to claim 1 or 4 described blast furnace linkage types; It is characterized in that: the corresponding contact end face of said butterfly plate and said valve seat is the groove formed sealing female cone hole face after selecting Austenitic stainless steel or the built-up welding of martensite type stainless steel or surfacing for use and processing grinding at this butterfly plate corresponding end-faces.
7. blast furnace linkage type according to claim 1 cuts off butterfly valve, and it is characterized in that: said butterfly plate sealing surface hardness number is 1:1.1 to 3 with the ratio of sealing surface of seat hardness number.
8. blast furnace linkage type according to claim 1 cuts off butterfly valve; It is characterized in that: said filler compresses the two ends that sealing configuration is positioned at valve body and valve rod; Pack into successively between said valve body two ends endoporus and the valve rod axle sleeve, drip ring, first layer combined packing, stuffing box, second layer combined packing, Gland; Said Gland is connected with stuffing box through fastening piece, and said stuffing box is fixedly connected with valve body through fastening piece.
9. blast furnace linkage type according to claim 8 cuts off butterfly valve, and it is characterized in that: said combined packing material is that Expanded graphite adds graphite fiber.
10. blast furnace linkage type according to claim 8 cuts off butterfly valve, it is characterized in that: said axle sleeve is that nanometer is electroplated self lubrication bearing.
11. blast furnace linkage type according to claim 1 cuts off butterfly valve; It is characterized in that: said butterfly spring filler pretension sealing configuration places between valve body inner bore and the valve rod; Between said valve body inner bore and valve rod, pack into successively axle sleeve, drip ring, combined packing, gland and pressing plate; On the gland step, place butterfly spring, adopt fastening piece that pressing plate is compressed butterfly spring, and pressing plate is connected with valve body.
12. blast furnace linkage type according to claim 11 cuts off butterfly valve, it is characterized in that: said combined packing material is that Expanded graphite adds graphite fiber.
13. blast furnace linkage type according to claim 11 cuts off butterfly valve, it is characterized in that: said axle sleeve is that nanometer is electroplated self lubrication bearing.
14. blast furnace linkage type according to claim 1 cuts off butterfly valve, it is characterized in that: be provided with single lever-type butterfly plate controlling mechanism or double rod type butterfly plate controlling mechanism between said valve body and the linkage mechanism.
15. blast furnace linkage type according to claim 14 cuts off butterfly valve; It is characterized in that: said single lever-type butterfly plate controlling mechanism; Be arranged in said blast furnace linkage type and cut off the valve body of butterfly valve and the single fixing rod joint of linkage mechanism; Both sides fixedly install the adjusting screw rod seat respectively before and after the inwall of said valve body and the fixing rod joint, and the end of the adjusting screw rod that is connected with said adjusting screw rod seat is fixed on the fixing rod bi-side respectively, constitutes the butterfly plate controlling mechanism of this cut-out butterfly valve.
16. blast furnace linkage type according to claim 15 cuts off butterfly valve, it is characterized in that: the exterior edge face of said adjusting screw rod seat and the threaded connection place of adjusting screw rod are provided with lock nut.
17. blast furnace linkage type according to claim 14 cuts off butterfly valve; It is characterized in that: said double rod type butterfly plate controlling mechanism; Be arranged in two fixing rods difference joint that said blast furnace linkage type cuts off the valve body and the linkage mechanism of butterfly valve; The inwall of said valve body fixedly installs the adjusting screw rod seat respectively in both sides, front and back, joint respectively with two fixing rods; The end of the adjusting screw rod that is connected with said adjusting screw rod seat is fixed on two fixing rod bi-side respectively, constitutes the butterfly plate controlling mechanism of this cut-out butterfly valve.
18. blast furnace linkage type according to claim 17 cuts off butterfly valve, it is characterized in that: the exterior edge face of said adjusting screw rod seat and the threaded connection place of adjusting screw rod are provided with lock nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202616170U CN202188137U (en) | 2011-07-22 | 2011-07-22 | Blast furnace connection-rod type cut-off butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202616170U CN202188137U (en) | 2011-07-22 | 2011-07-22 | Blast furnace connection-rod type cut-off butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202188137U true CN202188137U (en) | 2012-04-11 |
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ID=45919589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202616170U Expired - Lifetime CN202188137U (en) | 2011-07-22 | 2011-07-22 | Blast furnace connection-rod type cut-off butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202188137U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252106A (en) * | 2011-07-22 | 2011-11-23 | 世林（漯河）冶金设备有限公司 | Link type cutoff butterfly valve of blast furnace |
| CN103821952A (en) * | 2014-02-25 | 2014-05-28 | 杭州杭氧工装泵阀有限公司 | Three-rod type switchover butterfly valve |
-
2011
- 2011-07-22 CN CN2011202616170U patent/CN202188137U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252106A (en) * | 2011-07-22 | 2011-11-23 | 世林（漯河）冶金设备有限公司 | Link type cutoff butterfly valve of blast furnace |
| CN103821952A (en) * | 2014-02-25 | 2014-05-28 | 杭州杭氧工装泵阀有限公司 | Three-rod type switchover butterfly valve |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120411 |
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| CX01 | Expiry of patent term |