CN102235547A - Blast furnace connecting rod type cutting butterfly valve packing seal structure - Google Patents

Blast furnace connecting rod type cutting butterfly valve packing seal structure Download PDF

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Publication number
CN102235547A
CN102235547A CN2011102068607A CN201110206860A CN102235547A CN 102235547 A CN102235547 A CN 102235547A CN 2011102068607 A CN2011102068607 A CN 2011102068607A CN 201110206860 A CN201110206860 A CN 201110206860A CN 102235547 A CN102235547 A CN 102235547A
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CN
China
Prior art keywords
seal structure
blast furnace
valve body
valve
packing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2011102068607A
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Chinese (zh)
Inventor
杨国宇
袁静波
郭世卫
郭宇
张松涛
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SHILIN (LUOHE) METALLURGY EQUIPMENT CO Ltd
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SHILIN (LUOHE) METALLURGY EQUIPMENT CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by SHILIN (LUOHE) METALLURGY EQUIPMENT CO Ltd filed Critical SHILIN (LUOHE) METALLURGY EQUIPMENT CO Ltd
Priority to CN2011102068607A priority Critical patent/CN102235547A/en
Publication of CN102235547A publication Critical patent/CN102235547A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a blast furnace connecting rod type cutting butterfly valve packing seal structure which is positioned at the two ends of a valve body and a valve rod, wherein a shaft sleeve, an oil ring, a first-layer combined filler, a filler box, a second-layer combined filler and a packing gland are successively placed between a valve body inner hole and the valve rod; the packing gland is connected with the filler box through a fastener, and the filler box is connected with the valve body through a fastener; or the shaft sleeve, a drip ring, a combined filler and a pressing sleeve are successively placed between the valve body inner hole and the valve rod, a butterfly spring is placed on the step of the pressing sleeve, the butterfly spring is compacted by a pressing plate through a fastener, and the pressing plate is connected with the valve body. The seal structure provided by the invention has the advantages that the filler is made of flexible graphite and carbon fiber, thus the sealing property is obviously higher than that the traditional single-group graphite braided packing, the seal structure not only has a lubrication function but also certain expansion after being heated, the seal is more reliable, the high temperature resistance is achieved, and the problem that the two ends of the existing butterfly valve rod leak gas is preferably solved; and the shaft sleeve is a nanoplating self-lubricating shaft sleeve which has the advantages of stronger wear and abrasion resistance longer service life and more excellent performance compared with the than common shaft sleeve.

Description

A kind of blast furnace linkage type cuts off the butterfly valve packing seal structure
 
Technical field
The present invention relates to the linkage type cut-out butterfly valve that a kind of blast furnace process is used, especially a kind of blast furnace linkage type cuts off the butterfly valve packing seal structure.
Background technique
The blast furnace linkage type cuts off butterfly valve and is applicable on the medium pipelines such as blast furnace air, coal gas, combustible gas, is commonly used for cut-off valve.It is little that existing blast furnace linkage type cut-off valve has a volume, lightweight characteristics, but in real work, gas leakage problem in valve rod two ends often appears.Existing blast furnace linkage type cut-off valve, the sealed at both ends structure of valve rod are single group filler, and sealability is relatively poor, valve rod two ends leakage phenomenon often occurs, cause a hidden trouble for the ordinary production of blast furnace, staff's personal safety.The blast furnace linkage type of for this reason developing a kind of good seal performance cuts off very necessity of butterfly valve packing seal structure.
Summary of the invention
Cut off the above-mentioned technical problem that butterfly valve exists in order to solve existing blast furnace linkage type, provide a kind of normal smelting operation, good seal performance, a kind of blast furnace linkage type that maintenance cost is low of guaranteeing to cut off the butterfly valve packing seal structure.
The technical solution adopted in the present invention is:
Described blast furnace linkage type cuts off the butterfly valve packing seal structure and is positioned at valve body and valve rod two ends, pack into successively between described valve body two ends endoporus and the described valve rod axle sleeve, drip ring, first layer combined packing, stuffing box, second layer combined packing, Gland, described Gland is connected with stuffing box by fastening piece, and described stuffing box is fixedlyed connected with valve body by fastening piece.
Described combined packing material is that Expanded graphite adds carbon fiber.
Described fastening piece is bolt, nut.
Described axle sleeve is that nanometer is electroplated self lubrication bearing.
The present invention can also adopt the blast furnace linkage type of another kind of type to cut off the butterfly valve packing seal structure, this packing seal structure also is positioned at the two ends of valve body and valve rod, between described valve body two ends endoporus 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.
This blast furnace linkage type cuts off the butterfly valve packing seal structure, is positioned at the two ends of valve rod, adopts two groups of compound seals to compress by Gland, is called for short the Gland type; Or by the pretightening force that fastening piece produces pressing plate is formed pressure, pressure by pressing plate, butterfly spring, gland, act on the seal combination filler, thereby to the gas seal at valve rod external part place, be called for short the butterfly spring type.For the butterfly spring type, when influenced by operating mode, stuffing box packing elasticity weakens or fastening piece when loosening trend is arranged, and the elastic potential energy that butterfly spring is stored discharges, and has kept the lasting pressure to stuffing box packing.
The stuffing box packing material of packing seal structure is that Expanded graphite adds carbon fiber, and its sealability is apparently higher than traditional single group graphite braided packing.This packing seal structure not only has lubricating function, and has a certain amount of expansion after being heated, and makes sealing more reliable, and high temperature resistant, has solved the problem that existing butterfly valve valve rod two ends gas leaks outside satisfactorily.
Description of drawings
Fig. 1 cuts off the schematic representation of butterfly valve packing seal structure for the blast furnace linkage type;
Fig. 2 is the enlarged diagram of the A portion Gland type of Fig. 1;
Fig. 3 is the enlarged diagram of the A portion butterfly spring type of Fig. 1.
Embodiment
Further introduce embodiments of the invention below in conjunction with accompanying drawing:
Shown in Figure 1, this blast furnace linkage type cuts off the butterfly valve packing seal structure and is arranged on valve rod 2 extended positions that the blast furnace linkage type cuts off butterfly valve body 1 two ends.
Shown in Figure 2, the blast furnace linkage type cuts off the butterfly valve packing seal structure and comprises valve body 1, valve rod 2, self lubrication bearing 3, drip ring 4, first layer combined packing 5, stuffing box 6, second layer combined packing 7, Gland 8, fastening piece 9, fastening piece 10.Stuffing seal between valve body 1 endoporus and valve rod 2, the self lubrication bearing 3 of packing into successively, drip ring 4, first layer combined packing 5, stuffing box 6, second layer combined packing 7, Gland 8.Stuffing box 6 is fixedlyed connected with valve body 1 by fastening piece 10.Gland 8 is connected with stuffing box 6 by fastening piece 9.This packing seal structure is to have adopted two groups of compound seals at the two ends of valve rod 2 extended position.Seal combination filler 5 and 7 its materials are that Expanded graphite adds carbon fiber, its sealability not only has lubricating function, and has a certain amount of expansion after being heated apparently higher than traditional single group graphite braided packing, make sealing more reliable, solved the disadvantage that existing butterfly valve easily leaks outside.Self lubrication bearing 3 adopts nanometers to electroplate self lubrication bearings, and is more wear-resistant than general self lubrication bearing, the life-span is long, superior performance.
Shown in Figure 3, this blast furnace linkage type cuts off another type packing seal structure of butterfly valve, be arranged on valve rod 2 extended positions that the blast furnace linkage type cuts off butterfly valve body 1 two ends, seal combination filler 5, screw bolt and nut combination fasteners 14, valve body 1, valve rod 2, axle sleeve 3, drip ring 4 that seal combination filler 7, the Expanded graphite that it mainly adds the carbon fiber composite by gland 11, pressing plate 12, butterfly spring 13, Expanded graphite adds the carbon fiber composite constitute.The nanometer of packing into successively between valve body 1 endoporus and the valve rod 2 is electroplated axle sleeve 3, profit filler 5, slip ring 4, filler 7, the gland 11 of selflubricating material, and diagram is placed on drip ring 4 both sides respectively with filler 7 and filler 5, can make filler obtain sufficient lubrication.On gland 11 steps, place standard piece butterfly spring 13, adopt screw bolt and nut combination fasteners 14 that pressing plate 12 is compressed butterfly spring 13, and pressing plate 12 is connected with valve body 1.Can form pressure to pressing plate 12 by tightening nut, pressure is by pressing plate 12, and butterfly spring 13, gland 11 act in the stuffing box packing 5,7, and 5,7 pairs of valve rod 2 external parts of stuffing box packing seal, and prevent that gas from escaping from valve rod.When the influence that is subjected to operating mode, stuffing box packing 5,7 elasticity weaken or fastening piece 14 when loosening trend is arranged, and the elastic potential energy that butterfly spring 13 is stored discharges, and has kept the lasting pressure to stuffing box packing 5,7, has stoped the loosening of fastening piece 14.

Claims (8)

1. a blast furnace linkage type cuts off the butterfly valve packing seal structure, it is characterized in that: this packing seal structure is positioned at the two ends of valve body and valve rod, pack into successively between described valve body two ends endoporus and the valve rod axle sleeve, drip ring, first layer combined packing, stuffing box, second layer combined packing, Gland, described Gland is connected with stuffing box by fastening piece, and described stuffing box is fixedlyed connected with valve body by fastening piece.
2. blast furnace linkage type according to claim 1 cuts off the butterfly valve packing seal structure, and it is characterized in that: described combined packing material is that Expanded graphite adds carbon fiber.
3. blast furnace linkage type according to claim 1 and 2 cuts off the butterfly valve packing seal structure, and it is characterized in that: described fastening piece is bolt, nut.
4. blast furnace linkage type according to claim 1 and 2 cuts off the butterfly valve packing seal structure, it is characterized in that: described axle sleeve is that nanometer is electroplated self lubrication bearing.
5. a blast furnace linkage type cuts off the butterfly valve packing seal structure, it is characterized in that: this packing seal structure is positioned at the two ends of valve body and valve rod, between described valve body two ends endoporus 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.
6. blast furnace linkage type according to claim 5 cuts off the butterfly valve packing seal structure, and it is characterized in that: described combined packing material is that Expanded graphite adds carbon fiber.
7. cut off the butterfly valve packing seal structure according to claim 5 or 6 described blast furnace linkage types, it is characterized in that: described fastening piece is bolt, nut.
8. cut off the butterfly valve packing seal structure according to claim 5 or 6 described blast furnace linkage types, it is characterized in that: described axle sleeve is that nanometer is electroplated self lubrication bearing.
CN2011102068607A 2011-07-22 2011-07-22 Blast furnace connecting rod type cutting butterfly valve packing seal structure Pending CN102235547A (en)

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Application Number Priority Date Filing Date Title
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103697228A (en) * 2013-12-18 2014-04-02 中国航天科技集团公司第六研究院第十一研究所 Device capable of indicating packing compression status of valve stem
CN104110496A (en) * 2014-04-02 2014-10-22 衢州兰玲机电科技有限公司 Sealing structure for rotary shaft of flue gas valve
CN104863005A (en) * 2015-04-22 2015-08-26 浙江大盛纸业有限公司 Disc mill sealing device for pulping machine
CN105396482A (en) * 2015-11-23 2016-03-16 天津碎易得环保工程技术有限公司 Horizontal mixer
CN105782558A (en) * 2016-05-06 2016-07-20 上海沪航阀门有限公司 Multiple and double-layer sealing packing gland device and using method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5230498A (en) * 1990-10-09 1993-07-27 Fisher Controls International, Inc. Live load packing system
CN2893339Y (en) * 2006-04-20 2007-04-25 湖北洪城通用机械股份有限公司 Electric vacuum valve
CN200946673Y (en) * 2006-08-29 2007-09-12 浙江重工阀门有限公司 Double-eccentric bi-directional metal seal butterfly valve
US20070240676A1 (en) * 2006-04-12 2007-10-18 Denso Corporation Throttle control apparatus and method for throttle control
CN200979018Y (en) * 2006-02-14 2007-11-21 上海川和自控设备有限公司 Non-support type valve rod with dynamically loaded compensation
CN201129480Y (en) * 2007-12-18 2008-10-08 中核苏阀科技实业股份有限公司 Super high temperature flue gas butterfly valve

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5230498A (en) * 1990-10-09 1993-07-27 Fisher Controls International, Inc. Live load packing system
CN200979018Y (en) * 2006-02-14 2007-11-21 上海川和自控设备有限公司 Non-support type valve rod with dynamically loaded compensation
US20070240676A1 (en) * 2006-04-12 2007-10-18 Denso Corporation Throttle control apparatus and method for throttle control
CN2893339Y (en) * 2006-04-20 2007-04-25 湖北洪城通用机械股份有限公司 Electric vacuum valve
CN200946673Y (en) * 2006-08-29 2007-09-12 浙江重工阀门有限公司 Double-eccentric bi-directional metal seal butterfly valve
CN201129480Y (en) * 2007-12-18 2008-10-08 中核苏阀科技实业股份有限公司 Super high temperature flue gas butterfly valve

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103697228A (en) * 2013-12-18 2014-04-02 中国航天科技集团公司第六研究院第十一研究所 Device capable of indicating packing compression status of valve stem
CN103697228B (en) * 2013-12-18 2015-10-21 中国航天科技集团公司第六研究院第十一研究所 A kind of device with instruction stem packing impaction state
CN104110496A (en) * 2014-04-02 2014-10-22 衢州兰玲机电科技有限公司 Sealing structure for rotary shaft of flue gas valve
CN104863005A (en) * 2015-04-22 2015-08-26 浙江大盛纸业有限公司 Disc mill sealing device for pulping machine
CN105396482A (en) * 2015-11-23 2016-03-16 天津碎易得环保工程技术有限公司 Horizontal mixer
CN105782558A (en) * 2016-05-06 2016-07-20 上海沪航阀门有限公司 Multiple and double-layer sealing packing gland device and using method

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Application publication date: 20111109