CN2719851Y - Blast furnace up-down sealing valve - Google Patents
Blast furnace up-down sealing valve Download PDFInfo
- Publication number
- CN2719851Y CN2719851Y CN 200420016576 CN200420016576U CN2719851Y CN 2719851 Y CN2719851 Y CN 2719851Y CN 200420016576 CN200420016576 CN 200420016576 CN 200420016576 U CN200420016576 U CN 200420016576U CN 2719851 Y CN2719851 Y CN 2719851Y
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- CN
- China
- Prior art keywords
- connecting rod
- valve plate
- valve
- spring
- arm
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides a blast furnace up-down sealing valve with good sealing performance, comprising a valve body, a valve plate, a connecting rod switching mechanism and an elastic pressing mechanism arranged on the valve plate. A connecting rod switching arm is connected with the valve plate through the elastic pressing mechanism. The utility model forges a butterfly type spring into a press spring and keeps definite pretightening pressure contact between the sealing surface of the valve plate and the sealing surface of a valve seat through a linkage mechanism and the press spring. Because the spring on the valve plate is arranged on the center of the valve plate, the connecting rod switching mechanism can realize self locking by the eccentric force tending the center of gravity direction on the valve plate, ensure the favorable sealing performance of the system under the situation without oil pressure and improves the seal performance of the blast furnace.
Description
Affiliated technical field
The utility model relates to the blast furnace tightness system, is the upper and lower seal valve of a kind of blast furnace specifically.
Background technology
The upper and lower seal valve of blast furnace is when guaranteeing the blast furnace normal operation, and coal gas does not leak, and plays the pressurize effect, thus raising blast-furnace smelting efficient.The upper and lower seal valve of existing blast furnace generally adopts the crank arm type structure, and oil cylinder directly is connected with cranking arm, and cranking arm on the main shaft, main shaft and valve plate is connected, and valve plate is connected with the bearing pin of cranking arm, and plays sealing function thereby by back pressure valve plate is contacted with valve seat.But in the practical work process, because oil cylinder directly is connected with cranking arm, no self-locking action, in the working conditions of no oil pressure, valve plate is upper and lower usually not to reach rated differential head owing to equal pressures, owing to the gravity valve plate is opened voluntarily, thereby can't realize the pressurize effect.Because valve plate connects with cranking arm to be connected by bearing pin, thereby limited degree of freedom inside and outside on the valve plate, be difficult to realization and seal, can only be by strengthening, the method for thickened sealing ring is gone compensation, owing to increasing, thickened sealing ring, thereby require back pressure to increase, unfavorable to sealing.
Summary of the invention
Technical problem to be solved in the utility model provides the upper and lower seal valve of a kind of blast furnace, utilizes the dead point of connecting rod to make the oil cylinder self-locking, thereby and universal coupling be connected the degree of freedom that does not limit on the valve plate with valve plate, guarantee excellent sealing performance.
The technical scheme that the utility model technical solution problem is adopted is such: the utility model comprises valve body, valve plate and connecting rod open-and-close mechanism, elastic compression mechanism is set on the valve plate, connecting rod folding arm is connected with valve plate by elastic compression mechanism, main shaft in the hydraulic oil cylinder driving connecting rod open-and-close mechanism, main shaft rotates around its axle center, crank arm and rotate around spindle axis, the connecting rod open-and-close mechanism is provided with limited block.Oil cylinder is connected in the pass valve position mutually with linkage assembly and was changed to the dead-centre position, thereby makes valve plate close the valve position self-locking.
Described limited block is positioned at the dead-centre position of connecting rod open-and-close mechanism, fixedlys connected with rocker arm support.
Described connecting rod open-and-close mechanism comprises: oil cylinder, rocking arm, oil cylinder piston bar, main shaft and connecting rod, and oil cylinder is connected with connecting rod, and connecting rod one end is connected with rocking arm, and the other end of connecting rod is connected with the folding arm; Rocking arm is connected by hinge with rocker arm support, and the folding arm is connected with hinge.
The beneficial effects of the utility model are: by linkage assembly valve gap and valve seat are kept in touch, and by the self-locking of linkage assembly realization oil cylinder, adopt butterfly spring effect holddown spring, use sealing surface of valve plate and sealing surface of seat to keep certain preload pressure by butterfly spring pressure.
Thereby stressed valve plate and the free centering contact structures of sealing-ring of making of valve plate single-point have replaced contacting the mode that valve plate is contacted with sealing-ring by the valve plate two point between valve plate and the valve seat, promptly replace original bearing pin with ball journal.Because valve plate is provided with spring and is positioned at valve plate central authorities, make valve plate not have the eccentric force of tendency center of gravity direction, and give tight power and can regulate by spring, by the gas pressure in the blast furnace in valve plate, thereby reach sealing effectiveness.
Side rod mechanism is connected with oil cylinder, when valve plate during in off-position, thereby linkage assembly by the dead point after self-locking make the oil cylinder self-locking, no matter oil cylinder has or not oil pressure or self-locking can both make valve plate keep motionless in off-position.Sealing surface of seat contacts the conical contact into same angle with sealing surface of valve plate, owing on the valve plate spring is installed, can guarantee that contact surface all can make valve gap and sealing-ring keep well contacting when the deformation that produces in various degree.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the partial enlarged drawing of Fig. 1.
Among the figure: 1, oil cylinder, 2, hinge, 3, rocking arm, 4, rocker arm support, 5, limited block, 6, the oil cylinder piston bar, 7, main shaft, 8, connecting rod, 9, the bulb lid, 10,11 bulb installation sleeves, 12, ball journal, 13, valve body, 14, folding arm, 15, spring, 16, valve plate, 17, spring press-cover, 18, set nut, 19, ball-head cover.
Embodiment
As shown in Figure 1, the upper and lower seal valve of blast furnace comprises: valve body 13, valve plate 16 and connecting rod open-and-close mechanism, elastic compression mechanism is set on the valve plate 16, connecting rod folding arm 14 is connected with valve plate 16 by elastic compression mechanism, the connecting rod open-and-close mechanism is provided with limited block 5, main shaft 7 in the oil cylinder 1 drive link open-and-close mechanism, main shaft 7 rotates around its axle center, cranks arm 14 around main shaft 7 axle center rotation 5.Folding power provides by oil cylinder 1.
Limited block 5 is positioned at the dead-centre position of connecting rod open-and-close mechanism, fixedlys connected with rocker arm support 4.
The connecting rod open-and-close mechanism comprises: oil cylinder 1, rocking arm 3, oil cylinder piston bar 6, main shaft 7 and connecting rod 8, and oil cylinder 1 is connected with connecting rod 8, and connecting rod 8 one ends are connected with rocking arm 3, and the other end of connecting rod 8 is connected with folding arm 14; Rocking arm 3 is connected by hinge 2 with rocker arm support 4, and folding arm 14 is connected with hinge 7.
Elastic compression mechanism for implementing scheme in the present embodiment is: between valve plate 16 and the folding arm 14 hold-down mechanism is set, being connected to become of valve plate and hold-down mechanism is floated be connected and fixedly connected with the folding arm; Hold-down mechanism comprises spring housing and the holddown spring that is separately positioned on valve plate, the connecting rod folding arm, make the valve plate 16 and the trim of valve body keep in touch and use it to keep certain pressure by camber of spring, under installation for blast furnace gas pressure, make valve plate realize sealing.
The ball journal 12 that floats and connect with it is set on the valve plate 16 in the present embodiment, sphero-cylindrical lens 19, folding arm 14 is provided with fixedly connected with it spring press-cover 17, butterfly spring 15 places between sphero-cylindrical lens 19 and the spring press-cover 17, bulb installation sleeve 10,11 and bulb lid 9 is set on the valve plate, and ball journal is connected by the universal joint form with valve gap.
The self-locking mechanism embodiment of present embodiment is: connecting rod 8 because oil cylinder 1 reactive force (is crossed the dead point) when making connecting rod 8 become 180 to spend with the rocking arm angle, because limited block 5 acts on, is realized self-locking with rocking arm 3.
Elastic compression mechanism comprises the ball journal 12 that floats and be connected with valve plate, is installed in the spring 15 on the ball journal 12, and the other end of spring 15 places in the spring housing 17 that is provided with on the connecting rod folding arm.
The passing through of ball journal 12 and valve plate 16 is provided with ball journal 12 on the valve plate 16 installation sleeve 10,11 is connected with bulb lid 19.
Elastic compression mechanism is that spring 15 is arranged at valve plate 16 and floats on the ball journal 12 axle sleeve ball-head covers 19 that are connected, and on the connecting rod folding arm 14 spring housing 17 is set, and spring 15 places between sphero-cylindrical lens and the spring housing 17, and sphero-cylindrical lens and spring housing 17 are connected.
Claims (7)
1, the upper and lower seal valve of a kind of blast furnace, comprise: valve body (13), valve plate (16) and connecting rod open-and-close mechanism, valve plate is provided with elastic compression mechanism on (16), connecting rod folding arm (14) is connected with valve plate (16) by elastic compression mechanism, it is characterized in that the connecting rod open-and-close mechanism is provided with limited block (5), main shaft (7) in oil cylinder (1) the drive link open-and-close mechanism, main shaft (7) rotates around its axle center, and rotate around main shaft (7) axle center crank arm (14).
2, according to the upper and lower seal valve of the described blast furnace of claim 1, it is characterized in that described limited block (5) is positioned at the dead-centre position of connecting rod open-and-close mechanism, fixedly connected with rocker arm support (4).
3, according to claim 1 or the upper and lower seal valve of 2 described blast furnaces, it is characterized in that described connecting rod open-and-close mechanism comprises: oil cylinder (1), rocking arm (3), oil cylinder piston bar (6), main shaft (7) and connecting rod (8), oil cylinder (1) is connected with connecting rod (8), connecting rod (8) one ends are connected with rocking arm (3), and the other end of connecting rod (8) is connected with folding arm (14); Rocking arm (3) is connected by hinge (2) with rocker arm support (4), and folding arm (14) is connected with main shaft (7).
4, according to the upper and lower seal valve of the described blast furnace of claim 1, it is characterized in that described elastic compression mechanism fixedlys connected with connecting rod folding arm (14), floating with valve plate is connected.
5, according to claim 1 or the upper and lower seal valve of 4 described blast furnaces, it is characterized in that the ball journal (12) that described elastic compression mechanism comprises and valve plate floats and is connected, be installed in the spring (15) on the ball journal (12), in the spring press-cover (17) that the other end of spring (15) is provided with on connecting rod folding arm.
6, according to claim 1 or the upper and lower seal valve of 4 described blast furnaces, it is characterized in that described elastic compression mechanism is that spring (15) is arranged at valve plate (16) and floats on ball journal (12) the axle sleeve ball-head cover (19) that is connected, spring housing (17) is set on the connecting rod folding arm (14), spring (15) places between sphero-cylindrical lens and the spring press-cover (17), and sphero-cylindrical lens and spring press-cover (17) are connected.
7,, it is characterized in that described ball journal (12) is connected with bulb lid (9) by the installation sleeve (10,11) that ball journal is set with valve plate (16) according to the upper and lower seal valve of the described blast furnace of claim 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420016576 CN2719851Y (en) | 2004-07-12 | 2004-07-12 | Blast furnace up-down sealing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420016576 CN2719851Y (en) | 2004-07-12 | 2004-07-12 | Blast furnace up-down sealing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2719851Y true CN2719851Y (en) | 2005-08-24 |
Family
ID=35008813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420016576 Expired - Fee Related CN2719851Y (en) | 2004-07-12 | 2004-07-12 | Blast furnace up-down sealing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2719851Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102424870A (en) * | 2011-11-30 | 2012-04-25 | 中冶南方工程技术有限公司 | Lower sealing valve for bell-less top of blast furnace |
| CN105333188A (en) * | 2015-10-31 | 2016-02-17 | 瑞安市阀门一厂 | Adjustable pressure release valve |
-
2004
- 2004-07-12 CN CN 200420016576 patent/CN2719851Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102424870A (en) * | 2011-11-30 | 2012-04-25 | 中冶南方工程技术有限公司 | Lower sealing valve for bell-less top of blast furnace |
| CN105333188A (en) * | 2015-10-31 | 2016-02-17 | 瑞安市阀门一厂 | Adjustable pressure release 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: 20050824 Termination date: 20090712 |