CN204879025U - Hot -blast valve valve rod fixing device - Google Patents
Hot -blast valve valve rod fixing device Download PDFInfo
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- CN204879025U CN204879025U CN201520556174.6U CN201520556174U CN204879025U CN 204879025 U CN204879025 U CN 204879025U CN 201520556174 U CN201520556174 U CN 201520556174U CN 204879025 U CN204879025 U CN 204879025U
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- valve
- valve rod
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- blast
- blast valve
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Abstract
The utility model relates to a hot -blast valve valve rod fixing device, its characterized in that: valve rod fixing device is equipped with two sets, installs respectively in the outside of the hot -blast valve valve rod of hot -blast valve, and including the fixed block of welding on the hot -blast valve valve emits the body, the fixed block lies in the outside of the outer circumference of sealed packing gland, on the fixed block towards hot -blast valve valve rod orientation through the detachable backup pad of installing of bolt, the tip of backup pad is equipped with semi -circular uide bushing along hot -blast valve valve rod axis direction, the semi -circular copper sheathing of fixedly connected with in the uide bushing, the internal diameter of semi -circular copper sheathing matches with the external diameter of hot -blast valve valve rod. Adopt above -mentioned technical scheme, solved valve rod swing problem, make valve rod oscillating quantity reach the designing requirement, solved simultaneously, because that valve rod swing crush seal packing results in is sealed not tight, lead to the fact the hot -blast valve valve rod department to run the wind problem, use the back effect fine. Additionally, the utility model discloses still have advantages such as simple structure, mounting adjustment convenience.
Description
Technical field
The utility model belongs to hot blast valve of blast furnace valve rod technical field, particularly relates to a kind of valve rod of hot blast valve fixing device.
Background technique
At present, hot blast stove is hot-air system very important in blast furnace production process.And the first critical point of hot-blast valve when being hot-air system heat air delivery, therefore the quality run of hot-blast valve is most important.
Situation before transformation: in production run process, often there is Air Leakage in hot blast valve of blast furnace valve rod place.This problem of Solve on site, only has the rolling reduction of adjustment sealed packing gland.And the rolling reduction of gland is only less than 20mm.And all after pressure, Air Leakage still cannot solve.
Through field observation, valve rod of hot blast valve swings, and oscillating quantity reaches about 5mm.Can so why valve rod of hot blast valve produce and swing? learn afterwards after deliberation, hot-blast valve is in During Process of Long-term Operation, and the sealing guiding device during valve emits produces excessive wear, and cause valve stem seal guiding device to lose efficacy, valve rod cannot be fixed, and generation swings.And the fit dimension sealed between guiding device and valve rod, technical requirements should at below 0.1mm.And the oscillating quantity of about 5mm, well beyond technical requirements.The process of leaking out is: valve rod of hot blast valve drives in valve cake running, and valve rod produces neck and swings.Valve rod crush seal packing when valve rod swings, causes producing excessive gap value between sealed packing and valve rod, seal failure.Therefore high-temperature hot-air is after valve stem seal guiding device, at the gap location by producing between packing_seal and valve rod, runs out of in a large number through valve rod wall.Leak out produce adverse consequences: due to valve rod swing, cause gap value between valve rod and sealed packing excessive, sealed packing cannot play seal action.The hot blast just making hot blast stove carry is run out of from valve rod.Valve rod can be made when high-temperature hot-air leaks out for a long time on a small quantity to produce large areas of pitting, affect sealing effect.If leak out in a large number and process not in time, high-temperature hot-air (about 12000C) can by valve rod scaling loss.
At present, the method for Air Leakage is solved: the method solving valve rod of hot blast valve Air Leakage is.Necessary blast furnace staying, emits dismounting by hot-blast valve valve after damping down, changes sealing guiding device, changes sealed packing simultaneously.Then return dress to resume production.The damping down time needs 12 hours.And remove valve when emitting, due to hot-blast valve valve cake be in the condition of high temperature under (about 10000C).Therefore the cooling water of hot-blast valve valve cake not interruptible price.If there is no cooling water for a long time, valve cake scaling loss can be made.Due to the particularity of this work, make in maintenance process, to need to overcome very large difficulty, time and effort consuming.Blast furnace is not having damping down in planned situation in addition, can cause very large impact to conditions of blast furnace and production.
Summary of the invention
The utility model provides a kind of valve rod of hot blast valve fixing device for solving in known technology the technical problem that exists, its structure is simple, easy to install, solve valve rod vibration problems, valve rod oscillating quantity is made to reach designing requirement, solve simultaneously, because valve rod swinging extrusion sealed packing causes poorly sealed, cause valve rod of hot blast valve place to run wind problem, use rear effect fine.
The technological scheme that the utility model is taked for the technical problem existed in solution known technology is:
A kind of valve rod of hot blast valve fixing device, it is characterized in that: valve rod fixing device is provided with two covers, be arranged on the outside of the valve rod of hot blast valve of hot-blast valve respectively, comprise and be welded on hot-blast valve valve and emit fixed block on body, described fixed block is positioned at the outside of sealed packing gland excircle, fixed block is provided with dunnage towards valve rod of hot blast valve direction by bolt is detachable, the end of described dunnage is provided with semicircle guide sleeve along valve rod of hot blast valve axial direction, described guide sleeve internal fixtion is connected with semicircle copper sheathing, the semicircle internal diameter of copper sheathing mates with the external diameter of valve rod of hot blast valve.
The advantage that the utility model has and good effect are: because the utility model adopts technique scheme, solve valve rod vibration problems, valve rod oscillating quantity is made to reach designing requirement, solve simultaneously, because valve rod swinging extrusion sealed packing causes poorly sealed, cause valve rod of hot blast valve place to run wind problem, use rear effect fine.In addition, the utility model also has the advantages such as structure is simple, mounting and adjusting is convenient.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is side view;
Fig. 3 is the utility model using state figure.
In figure: 1, fixed block; 2, bolt; 3, dunnage; 4, semicircle guide sleeve; 5, semicircle copper sheathing; 6, hot-blast valve valve emits body; 7, valve rod of hot blast valve.
Embodiment
For summary of the invention of the present utility model, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1 to Fig. 3, a kind of valve rod of hot blast valve fixing device, this valve rod fixing device is provided with two covers, be arranged on the outside of the valve rod of hot blast valve of hot-blast valve respectively, comprise and be welded on hot-blast valve valve and emit fixed block 1 on body 6, described fixed block is positioned at the outside of sealed packing gland excircle, fixed block is provided with dunnage 3 towards valve rod of hot blast valve 7 direction by bolt 2 is detachable, the end of described dunnage is provided with semicircle guide sleeve 4 along valve rod of hot blast valve axial direction, described guide sleeve internal fixtion is connected with semicircle copper sheathing 5, the internal diameter of semicircle copper sheathing mates with the external diameter of valve rod of hot blast valve 7.
This device is two covers.Two valve rods of stationary heat air-valve, make valve rod can not swing and play the guiding role respectively.Dunnage lays respectively at the outside of hot-blast valve two valve rods.Fixed block and dunnage are bolted.Object is when changing sealing and changing packing, the joint dunnage near valve rod place is removed, is convenient to take out sealed packing gland.One end of fixed block and valve emit body structural member to be welded and fixed.Copper sheathing coordinates with valve lever clearance, and gap value can adjust according to actual conditions.
The utility model adopts technique scheme, solves valve rod vibration problems, makes valve rod oscillating quantity reach designing requirement, solve simultaneously, because valve rod swinging extrusion sealed packing causes poorly sealed, cause valve rod of hot blast valve place to run wind problem, use rear effect fine.In addition, the utility model also has the advantages such as structure is simple, mounting and adjusting is convenient.
The above is only to preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, every according to technical spirit of the present utility model to any simple modification made for any of the above embodiments, equivalent variations and modification, all belong in the scope of technical solutions of the utility model.
Claims (1)
1. a valve rod of hot blast valve fixing device, it is characterized in that: valve rod fixing device is provided with two covers, be arranged on the outside of the valve rod of hot blast valve of hot-blast valve respectively, comprise and be welded on hot-blast valve valve and emit fixed block on body, described fixed block is positioned at the outside of sealed packing gland excircle, fixed block is provided with dunnage towards valve rod of hot blast valve direction by bolt is detachable, the end of described dunnage is provided with semicircle guide sleeve along valve rod of hot blast valve axial direction, described guide sleeve internal fixtion is connected with semicircle copper sheathing, the semicircle internal diameter of copper sheathing mates with the external diameter of valve rod of hot blast valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520556174.6U CN204879025U (en) | 2015-07-28 | 2015-07-28 | Hot -blast valve valve rod fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520556174.6U CN204879025U (en) | 2015-07-28 | 2015-07-28 | Hot -blast valve valve rod fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204879025U true CN204879025U (en) | 2015-12-16 |
Family
ID=54823397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520556174.6U Active CN204879025U (en) | 2015-07-28 | 2015-07-28 | Hot -blast valve valve rod fixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204879025U (en) |
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2015
- 2015-07-28 CN CN201520556174.6U patent/CN204879025U/en active Active
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |