CN201334494Y - Improved hot blast valve sealing structure - Google Patents
Improved hot blast valve sealing structure Download PDFInfo
- Publication number
- CN201334494Y CN201334494Y CNU2008202277502U CN200820227750U CN201334494Y CN 201334494 Y CN201334494 Y CN 201334494Y CN U2008202277502 U CNU2008202277502 U CN U2008202277502U CN 200820227750 U CN200820227750 U CN 200820227750U CN 201334494 Y CN201334494 Y CN 201334494Y
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- China
- Prior art keywords
- valve
- hot blast
- sealing
- valve rod
- ring
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- 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.)
- Expired - Fee Related
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- Sliding Valves (AREA)
Abstract
The utility model provides an improved hot blast sealing structure, the basic structure of which comprises a hydraulic elevating bracket, wherein the elevating bracket is provided with a power oil cylinder and a hoisting chain, and the hoisting chain is connected with hoisting bracket which is arranged on a valve rod and drives a valve plate to complete the opening and the closing actions, and the valve rod is provided with a sliding sealing pair to realize the sealing, and is characterized in that a lower padding box of the sliding sealing pair of the valve rod is provided with n layers of graphite which are separated from each other through a separation ring. When in use, the sealing at the valve rod is changed to be a graphite ring, so that the sealing between the graphite ring and the valve rod can be improved by compressing the gap of the separation ring, thereby effectively preventing the heat from spreading upwards, and lubricating the valve rod, and improving the sealing performance of the hot blast valve, and prolonging the service life.
Description
Technical field
The utility model relates to a kind of improved hot blast valve sealed structure, belongs to blast funnace hot blast stove system valve technology field.
Background technology
Hot blast valve is mounted in the hot blast shifter of hotblast stove outlet and hot blast manifold, is the visual plant of blast funnace hot blast stove, on air opens at hotblast stove, and the burning phase closes.Working temperature is 900 ℃～1350 ℃, operating pressure is 0.1-0.5Mpa, traditional hot blast valve is because the envrionment temperature height, sealing material wears out and mouthful flange and the leakage of valve rod place in causing easily, shorten life of valve, existing valve stem seal is to place metallic packing ring in stuffing box, and wear ring is made up of three lobes, embrace the sealing that on valve rod, realizes the valve rod place by spring, because the variation of spring force makes the valve rod place be easy to leak; And a mouthful flange seal is only to add a metal packing washer in the middle of mouthful flange in mouthful flange and the valve body in valve gap in existing, compress mouthful sealing from the face realization with Bolt Connection, because high temperature ageing and the influence that changed by bolt force, also be easy to leak, therefore keeping the sealing at valve rod place and the sealing at middle mouthful of flange place is blast-furnace hot-air valve problem demanding prompt solution.
Summary of the invention
The purpose of this utility model is to provide a kind of improved hot blast valve sealed structure, to solve the sealing reliability problem of mouthful flange in valve stem seal and valve gap and the valve body.
The technical solution of the utility model is achieved in that this improved hot blast valve sealed structure, basic structure comprises the lifting support that surges, power cylinder and lifting chain are set on the lifting support, the suspension bracket drive valve plate that lifting chain is connected on the valve rod is finished switching motion, valve rod is provided with that slipper seal is secondary to realize sealing, it is characterized in that: n layer graphite annulus is set in the following stuffing box of valve stem slides sealing pair and separates with spacer ring.
Described improved hot blast valve sealed structure is characterized in that: the contact surface of described graphite annulus and spacer ring is a V-type, improves sealing between graphite annulus and valve rod by the gap that compresses spacer ring in the stuffing box up and down.
Described improved hot blast valve sealed structure, described graphite annulus is set to 5 layers.
Described improved hot blast valve sealed structure, described slipper seal pair also are provided with sealing-ring and the oil supply spacer ring that the cross section is an X-shaped in last stuffing box, compress the realization auxiliary seal with packing gland.
A kind of improved hot blast valve sealed structure, basic structure comprises the lifting support that surges, power cylinder and lifting chain are set on the lifting support, the suspension bracket drive valve plate that lifting chain is connected on the valve rod is finished switching motion, in the valve gap in mouthful flange and the valve body a mouthful flange sealing is set, it is characterized in that: open the twice groove on mouthful flange in the valve body, the metal hollow circle that is respectively arranged with the cross section on the groove and is O shape is realized sealing as wear ring with in a Bolt Connection valve gap mouthful of flange and the valve body mouthful of flange screw two seals ring.
Described improved hot blast valve sealed structure is filled with bituminous varnish in the described seal with O ring ring.
Described improved hot blast valve sealed structure is symmetrical arranged balancing cylinder at the bilateral of the lifting support upper valve rod that surges, and power cylinder is arranged at suspension bracket on the valve rod by the lifting chain pulling and drives valve plate and finish switching motion.
Described improved hot blast valve sealed structure, the cylinder rod of described balancing cylinder is fixed on on the lifting support that surges by nut, and the cylinder barrel of balancing cylinder links together hot blast valve valve rod and balancing cylinder with suspension bracket.
The improved hot blast valve sealed structure of the utility model in actual applications, because graphite annulus is changed in the sealing at valve rod place, improve sealing between graphite annulus and valve rod by the gap that compresses spacer ring, effectively prevented upwards propagating of heat, and valve rod is played lubrication; The metallic O ring of filled bitumen lacquer is adopted in the sealing at middle mouthful of flange place, has effectively prevented the high temperature deformation of metal o-ring, has realized labyrinth seal, thereby has improved the sealing property of hot blast valve, has prolonged work-ing life.
Description of drawings
Fig. 1 is that sealed structure of the present utility model is provided with synoptic diagram
Fig. 2 is the enlarged view of improved valve stem slides sealing pair 3 among Fig. 1
Fig. 3 is the enlarged view of improved middle mouthful of flange seal structure 11 among Fig. 1
Fig. 1 component label is respectively:
1, surge lifting support 2, valve rod 3, valve stem slides sealing pair 4, valve gap 5, valve plate 6, valve body 7, balancing cylinder 8, suspension bracket 9, lifting chain 10, power cylinder 11, middle mouthful of flange seal structure
Fig. 2 component label is respectively:
2, valve rod 12, oil supply spacer ring 13, X RunddichtringO 14, graphite annulus 15, time stuffing box 16, spacer ring 17, ring 18, packing gland 19, last stuffing box
Fig. 3 component label is respectively:
23, mouthful flange in mouthful flange 20, nut 21, wear ring 22, the valve body in the valve gap
Embodiment
The hot blast valve sealed structure that the utility model shown in Figure 1 provides is provided with synoptic diagram, basic structure comprises the lifting support 1 that surges, power cylinder 10 and lifting chain 11 are set on the lifting support, the suspension bracket 8 drive valve plates 5 that lifting chain is connected on the valve rod 2 are finished switching motion, and valve rod 2 is provided with slipper seal secondary 3 and realizes sealing.
5 layers of graphite annulus 14 are set in the following stuffing box 15 of valve stem slides sealing pair 3 shown in Figure 2 and use spacer ring 16 to separate.Graphite annulus 14 is a V-type with the contact surface of spacer ring 16, improves the primary seal of graphite annulus 14 and 2 of valve rods by the gap that compresses spacer ring in the stuffing box up and down, has effectively prevented the upwards propagation of heat.
The elongation technology scheme that valve stem slides sealing pair 3 provides is also to be provided with sealing-ring 13 and the oil supply spacer ring 12 that the cross section is an X-shaped in last stuffing box 19, compresses the realization auxiliary seal with packing gland 18.
The technical scheme of middle mouthful of flange seal structure 11 that the utility model provides is as shown in Figure 3: open the twice groove on mouthful flange 22 in the valve body, the metal hollow circle that is respectively arranged with the cross section on the groove and is O shape is as wear ring 21, connects in the valve gaps in mouthful flange 19 and valve body a mouthful flange 22 with bolt 20 and compresses the two seals ring and realize sealing.In order to prevent wear ring 21 temperature distortions, be filled with bituminous varnish for 21 li at the seal with O ring ring.
Except above-mentioned improved hot blast valve sealed structure, the utility model also improves with regard to the hoisting appliance of hot blast valve: the bilateral that is included in lifting support 1 upper valve rod 2 that surges is symmetrical arranged balancing cylinder 7, and power cylinder 10 is finished switching motion by the suspension bracket 8 drive valve plates 5 that lifting chain 11 pullings are arranged on the valve rod 2.The cylinder rod of balancing cylinder 7 is fixed on on the lifting support 1 that surges by nut, and the cylinder barrel of balancing cylinder 7 links together hot blast valve valve rod 2 and balancing cylinder 7 with suspension bracket 8.Owing to use symmetric balancing cylinder to replace the counterweight of valve plate, alleviated the power that valve plate weight has effectively reduced power cylinder simultaneously, energy efficiency further improves the use properties of hot blast valve.
The utility model listed examples is intended to further illustrate the application of this improved hot blast valve sealed structure, and protection domain of the present utility model is not constituted any restriction.
Claims (8)
1, a kind of improved hot blast valve sealed structure, basic structure comprises the lifting support that surges (1), power cylinder (10) and lifting chain (11) are set on the lifting support, suspension bracket (8) the drive valve plate (5) that lifting chain is connected on the valve rod (2) is finished switching motion, valve rod (2) is provided with slipper seal pair (A) and realizes sealing, it is characterized in that: n layer graphite annulus (14) is set in the following stuffing box (15) of valve stem slides sealing pair and uses spacer ring (16) to separate.
2, according to the described improved hot blast valve sealed structure of claim 1, it is characterized in that: the contact surface of described graphite annulus (14) and spacer ring (16) is a V-type, improves sealing between graphite annulus (14) and valve rod (2) by the gap that compresses spacer ring in the stuffing box up and down.
3, according to the described improved hot blast valve sealed structure of claim 1, it is characterized in that: described graphite annulus is set to 5 layers.
4, according to the described improved hot blast valve sealed structure of claim 1, it is characterized in that: described slipper seal pair also is provided with sealing-ring that the cross section is an X-shaped (13) and oil supply spacer ring (12) in last stuffing box (19), compress the realization auxiliary seal with packing gland (18).
5, a kind of improved hot blast valve sealed structure, basic structure comprises the lifting support that surges (1), power cylinder (10) and lifting chain (11) are set on the lifting support, suspension bracket (8) the drive valve plate (5) that lifting chain is connected on the valve rod (2) is finished switching motion, in the valve gap in mouthful flange (19) and the valve body mouth flange (22) sealing (B) is set, it is characterized in that: open the twice groove on mouthful flange (22) in the valve body, the metal hollow circle that is respectively arranged with the cross section on the groove and is O shape is as wear ring (21), connects in the valve gap in mouthful flange (19) and valve body a mouthful flange (22) with bolt (20) and compresses the two seals ring and realize sealing.
6, according to the described improved hot blast valve sealed structure of claim 5, it is characterized in that: described seal with O ring ring (21) lining is filled with bituminous varnish.
8, according to claim 1 or 5 described improved hot blast valve sealed structures, it is characterized in that: the bilateral at the lifting support that surges (1) upper valve rod (2) is symmetrical arranged balancing cylinder (7), and power cylinder (10) is finished switching motion by suspension bracket (8) the drive valve plate (5) that lifting chain (11) pulling is arranged on the valve rod (2).
9, described according to Claim 8 improved hot blast valve sealed structure, it is characterized in that: the cylinder rod of described balancing cylinder (7) is fixed on on the lifting support that surges (1) by nut, and the cylinder barrel of balancing cylinder (7) links together hot blast valve valve rod (2) and balancing cylinder (7) with suspension bracket (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202277502U CN201334494Y (en) | 2008-12-09 | 2008-12-09 | Improved hot blast valve sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202277502U CN201334494Y (en) | 2008-12-09 | 2008-12-09 | Improved hot blast valve sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201334494Y true CN201334494Y (en) | 2009-10-28 |
Family
ID=41286143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202277502U Expired - Fee Related CN201334494Y (en) | 2008-12-09 | 2008-12-09 | Improved hot blast valve sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201334494Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102803883A (en) * | 2010-03-15 | 2012-11-28 | 保尔伍斯股份有限公司 | Hot blast control valve for a metallurgical installation |
| CN102912058A (en) * | 2012-10-30 | 2013-02-06 | 中冶东方工程技术有限公司 | Hot-blast valve used in hot-blast furnace system for direct reduced iron vertical furnace |
| CN111677891A (en) * | 2020-05-29 | 2020-09-18 | 江苏浩博塑业有限公司 | Linkage sealing type air valve |
-
2008
- 2008-12-09 CN CNU2008202277502U patent/CN201334494Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102803883A (en) * | 2010-03-15 | 2012-11-28 | 保尔伍斯股份有限公司 | Hot blast control valve for a metallurgical installation |
| CN102803883B (en) * | 2010-03-15 | 2014-12-03 | 保尔伍斯股份有限公司 | Hot blast control valve for a metallurgical installation |
| CN102912058A (en) * | 2012-10-30 | 2013-02-06 | 中冶东方工程技术有限公司 | Hot-blast valve used in hot-blast furnace system for direct reduced iron vertical furnace |
| CN102912058B (en) * | 2012-10-30 | 2015-05-27 | 中冶东方工程技术有限公司 | Hot-blast valve used in hot-blast furnace system for direct reduced iron vertical furnace |
| CN111677891A (en) * | 2020-05-29 | 2020-09-18 | 江苏浩博塑业有限公司 | Linkage sealing type air valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091028 Termination date: 20121209 |