CN202209431U - Hollow tube trip valve of hollow electrode - Google Patents
Hollow tube trip valve of hollow electrode Download PDFInfo
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- CN202209431U CN202209431U CN2011203357760U CN201120335776U CN202209431U CN 202209431 U CN202209431 U CN 202209431U CN 2011203357760 U CN2011203357760 U CN 2011203357760U CN 201120335776 U CN201120335776 U CN 201120335776U CN 202209431 U CN202209431 U CN 202209431U
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Abstract
The utility model relates to closed electric furnace parts for metallurgy, particularly to a hollow tube trip valve of a hollow electrode, which is characterized by including a valve body, wherein a matched conical valve core is arranged at a cone part of the valve body, a bracket is fixedly connected onto the valve body, and a screw fixedly connected with the conical valve core is connected with a nut arranged on the bracket. By adopting the tubular cone valve structure, the hollow tube trip valve of the hollow electrode has the advantages of reasonable structure, reliable performance, convenience for use, long service life, quickness in plugging, and the like.
Description
Technical field
The utility model relates to metallurgy and uses the closed electric furnace parts, is a kind of hollow tube cut-off valve of hollow electrode.
Background technique
In recent years, China's ferro-alloy and calcium carbide industry had obtained development at full speed, and scale constantly enlarges.But because ferro-alloy and calcium carbide industry all belong to high energy consumption enterprise, so how to accomplish the energy-saving and cost-reducing problem that waste utilization is the continuous exploration of industry that reaches.
The main raw material of ferro-alloy and calcium carbide production is coke, ore etc.; Raw material will produce a large amount of powder in the fragmentation transportation, statistics accounts for the 15%-30% of whole material quantity, but because in smelting process; If powder is added in the burner hearth by usual manner; Will cause that the electric furnace gas permeability is poor, produce accidents such as material spring, production can't normally be moved.So a lot of enterprises work as waste disposal with powder, part enterprise has thought that also some utilize method, and like pressure ball etc., but utilization ratio is not high, and the side effect of generation is bigger.
Metallurgical hollow electrode with closed electric furnace utilizes the powder technique functions to come from abroad; Like countries such as Japan, Germany the application of hollow electrode technology in closed electric furnace arranged all; This technology can make powder directly be added in the high temperature molten bath of closed electric furnace through the hollow tube of electrode centers; Directly reaction generates product in the high temperature molten bath, and does not influence the gas permeability of by-product furnace gas, can not produce material spring, material collapses.China also introduces this technology respectively at late nineteen eighties, but through ten years development, and hollow electrode does not have the ripe operation of long period at home basically, and a lot of enterprises on new hang back, and dare not adopt this technology, trace it to its cause as follows:
1) directly inserts in the high temperature molten bath of closed electric furnace owing to hollow tube; High temperature is recurring chemical reduction reaction in the molten bath; Reaction generates a large amount of CO gas; These gases are assembled in the molten bath and are generated certain pressure, so powder just needs the inert gas release of pressure after getting into hollow tube, otherwise the gas in the burner hearth can return through hollow tube and toply catches fire or the people is caused intoxication accident.The used carrier gas of conveying material is generally nitrogen; So need the equipment of making nitrogen as assurance, but often because the failure and other reasons of the equipment of making nitrogen makes nitrogen pressure low or stop the supple of gas or steam, make the hollow electrode system can not long-term operation; And hollow tube does not have reliable valve shutoff, and accident is taken place frequently;
2) the same internal consumption in the molten bath constantly with electrode shell of hollow tube remedies so will constantly a section hollow tube be docked.Because hollow tube places in the molten bath; The inner CO gas with pressure of burner hearth can return top, and when the butt joint hollow tube, CO gas makes the people that fire accident take place to poison or cause along overflowing in the hollow tube; So, in butt joint must be to hollow tube during hollow tube, carry out effective shutoff.
In the prior art, the hollow tube of hollow electrode adopts the air bag plugging structure or directly adopts ball valve to carry out shutoff.
With reference to Fig. 1, the air bag plugging structure is on the sidewall of hollow tube 1, to open an air bag posting port 2, on air bag posting port 2, is connected with nut 3; When needs butt joint hollow tube 1, elder generation unclamps nut 3 fast and takes down, and overflows from air bag posting port 2 for preventing the CO gas in the burner hearth; Must fast the air bag 4 of unaerated be filled in the hollow tube 1 from air bag posting port 2; Use special-purpose inflator with air bag 4 qi of chong channel ascending adversely then, the balloon that makes expansion is shutoff in the hollow tube 1, after hollow tube 1 butt joint is installed; Fast the gas in the air bag 4 is bled off again and extract out, fast nut 3 is connected with air bag posting port 2 then from air bag posting port 2.This shows; In the operating process of butt joint hollow tube 1; Because factors such as operator's qualification, capping tools and nut 3 corrosions are difficult to guarantee all operations fast of each link, therefore; This structure that air bag 4 is inserted shutoff hollow tube 1 in the hollow tube 1 from air bag posting port 2 exists the possibility that the high temperature CO gas in the closed electric furnace molten bath is overflowed from air bag posting port 2, makes the people take place to poison or cause fire and personal injury accident.
With reference to Fig. 2; Utilizing conventional ball valve 5 blocking technologies is to utilize directly to connect ball valve 5 on the guide pin bushing that is enclosed within hollow tube 1 centre, and this ball valve 5 profiles and handle can not be too big, if the hollow tube 1 of too big butt joint can not be inserted in; See shown in the figure; Because the powder of conveying gets into hollow tube 1 through the spool bore of defeated material flexible pipe 6, ball valve 5, so the spool bore of ball valve 5 must align with pipeline at every turn, so that let powder normally import in the closed electric furnace molten bath.But because the characteristic of ball valve 5 itself will guarantee strict sealing, the spools in the middle of the ball valve 5 must closely cooperate with valve body; But because hollow tube 1 places in the closed electric furnace molten bath; Temperature fluctuation is greatly unavoidable, so the valve liner material of ball valve 1 is necessary for flexible material, and problem that Here it is place; Flexible material is general equal can not to bear the too high temperature and the wearing and tearing of dust; And the hollow pipeline communicates with the closed electric furnace molten bath, when scurrying up unavoidably owing to the high-temperature gas in the not enough molten bath of nebulizer gas pressure sometimes, so will damage ball valve 5.Also owing to the spool bore diameter of ball valve 5 diameter much smaller than hollow tube 1 forms carrying the throttling of powder; Be easy to cause local the obstruction, secondly because the powder dust-laden of carrying in the ball valve 5 is big, amounts of dust is to making the wearing and tearing of ball valve 5 valve body liners; To making ball valve very short 5 working lifes; Also to stop closed electric furnace if change ball valve 5, could thoroughly change ball valve 5 after furnace temperature lowers, can cause very big loss to production undoubtedly.
The model utility content
The purpose of the utility model is, overcomes the shortcoming of existing technology, and existing technology is carried out substantial improvements and innovation, provides a kind of rational in infrastructure, and reliable performance is easy to use, the life-span is long, and shutoff is the hollow tube cut-off valve of hollow electrode fast.
Realize that the technological scheme that the utility model purpose is taked is; A kind of hollow tube cut-off valve of hollow electrode; It is characterized in that: it comprises valve body; There is the taper valve core that matches cone part position at valve body, and on valve body, is fixed with support, and the nut that is provided with on the screw rod that taper valve core is connected and the support is connected.
The hollow tube cut-off valve of the utility model hollow electrode adopts the cannulate drill valve arrangement, and it is rational in infrastructure, and reliable performance is easy to use, the life-span is long, and shutoff is quick.
Description of drawings
Fig. 1 is the air bag plugging structure schematic representation of existing technology.
Fig. 2 is the ball valve plugging structure schematic representation of existing technology.
Fig. 3 is the hollow tube cut-off valve structural representation of the hollow electrode of the utility model.
Fig. 4 specifically uses schematic representation for the hollow tube cut-off valve of the hollow electrode of the utility model.
Among the figure: 1 hollow tube, 2 air bag posting ports, 3 nuts, 4 air bags, 5 ball valves, 6 defeated material flexible pipes; 7 valve bodies, 8 screw rods, 9 nuts, 10 supports, 11 packing seal elements; 12 cones, 13 taper valve cores, the hollow tube cut-off valve of 14 hollow electrodes, 15 carrier gas pipes, 16 interim charging hoses; 17 hollow electrodes, 18 powder conveyors, 19 powder lot feeding devices, 20 seal arrangements, 21 interior guide pin bushings.
Embodiment
Utilize accompanying drawing and embodiment that the utility model is further described below.
With reference to Fig. 3 and Fig. 4, the hollow tube cut-off valve 14 of hollow electrode comprises valve body 7, is equipped with the taper valve core 13 that matches at cone 12 positions of valve body 7, on valve body 7, is fixed with support 10, and the nut 9 that is provided with on the screw rod 8 that taper valve core 13 is connected and the support 10 is connected.Stretch out at screw rod 8 on the cone 12 of valve body 7 and be provided with packing seal element 11 on the plane.Interior guide pin bushing 21 top standpipes vertical and hollow tube 1 were connected when the hollow tube cut-off valve 14 of hollow electrode used; Hollow tube 1 is tightly connected with hollow electrode 17 through the seal arrangement 20 that is provided with on interior guide pin bushing 21 and the interior guide pin bushing 21, can realize after the hollow tube consumption that mutually internally guide pin bushing moves down.Hollow tube cut-off valve 14 tops of hollow electrode are connected with defeated material flexible pipe 6, or are connected with interim charging hose 16.The upper end of defeated material flexible pipe 6 is connected with powder conveyor 18 discharge ports, and defeated material flexible pipe 6 is connected with carrier gas pipe 15.Powder lot feeding device 19 is connected with powder conveyor 18 material feeding mouths.
During work; The hollow tube cut-off valve 14 of hollow electrode is shown in an open position; The taper valve core 13 and the screw rod 8 thereof that cooperate with cone 12 positions of valve body 7 are in the lower position, and at this moment powder is accompanied by carrier gas and gets into the molten bath that hollow tube 1 gets into closed electric furnace again through interior guide pin bushing 21 from top to down, when the hollow tube cut-off valve 14 of needs cut-out hollow electrode carries out hollow tube 1 connection; Close defeated material flexible pipe 6 and carrier gas pipe 15 earlier; Nut 9 on the rotary valve support 10 then, it is up to make screw rod 8 drive taper valve cores 13, with tight contact the in cone 12 positions of valve body 7 it is closed until the cone of taper valve core 13; If adopt CO that closed electric furnace reclaims, close before the hollow tube cut-off valve 14 of hollow electrode and should be in advance carrier gas to be switched to the hollow tube cut-off valve 14 of closing hollow electrode behind the nitrogen replacement again as carrier gas.Hollow tube to be connect 1 is inserted in last joint hollow tube 1 from the hollow tube cut-off valve 14 of hollow electrode docks.
During butt joint hollow tube 1; Close the hollow tube cut-off valve 14 of hollow electrode; The connecting end of the defeated material flexible pipe 6 that will be connected with the hollow tube cut-off valve 14 of hollow electrode unloads, and hollow tube to be connect 1 is inserted in last joint hollow tube 1 from the hollow tube cut-off valve 14 of hollow electrode docks.At this moment can in the hollow tube cut-off valve 14 of the hollow electrode of sealing, charge into nitrogen with pressure through opening interim charging hose 16; Further guarantee field personnel's safety; No matter execute-in-place working level height; Speed speed, but equal trouble free service have guaranteed the quality of operation and staff's safety.
The advantage applies of the hollow tube cut-off valve of hollow electrode exists:
1, easy and simple to handle reliable, shortened the operating time of changing hollow tube, can avoid the CO gas effusion in the closed electric furnace molten bath and make the people take place to poison or cause fire accident, guarantee safety;
2, spool adopts conical surface rigidity to contact with valve body, has guaranteed valve long-term operation under the rugged environment of high temperature, many dust.Owing to be the cone contact,, guarantee to seal simultaneously if spool or valve body have the compensation automatically of when wearing and tearing;
3, this valve also can add nitrogen and charges into joint, when closing, also can add nitrogen protection gas, assurance safety further toward the inside;
4, because present country widelys popularize closed electric furnace production, the recyclable coal gas of closed electric furnace, i.e. CO; The hollow tube cut-off valve of the utility model hollow electrode can guarantee to use as carrier gas with the coal gas that a part reclaims; After carrier gas and powder got into the closed electric furnace molten bath, carrier gas reclaimed through the bed of material again, and this mode can reduce a large amount of nitrogen preparation systems; Do not cause energy waste, so economical and practical;
5, the hollow tube cut-off valve of the utility model hollow electrode can make hollow electrode recovery powder technology guaranteed reliably; Make a large amount of powder that produce in ferro-alloy and the calcium carbide production be able to recycle; Change the not preceding present situation of present domestic hollow electrode technical stagnation simultaneously, help improving enterprise technology ability and economic benefit.
The hollow tube cut-off valve of the hollow electrode that the embodiment of the utility model provides does not limit to present embodiment; According to the enlightenment that the utility model obtained, those skilled in the art duplicate and improve the scope that should belong to the utility model rights protection without creative work is any.
Claims (1)
1. the hollow tube cut-off valve of a hollow electrode, it is characterized in that: it comprises valve body, in the cone part position of valve body the taper valve core that matches is arranged, and on valve body, is fixed with support, the nut that is provided with on the screw rod that taper valve core is connected and the support is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203357760U CN202209431U (en) | 2011-09-08 | 2011-09-08 | Hollow tube trip valve of hollow electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203357760U CN202209431U (en) | 2011-09-08 | 2011-09-08 | Hollow tube trip valve of hollow electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202209431U true CN202209431U (en) | 2012-05-02 |
Family
ID=45988978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203357760U Expired - Lifetime CN202209431U (en) | 2011-09-08 | 2011-09-08 | Hollow tube trip valve of hollow electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202209431U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359602A (en) * | 2011-09-08 | 2012-02-22 | 中钢集团吉林机电设备有限公司 | Hollow pipe shutoff valve for hollow electrode |
| CN107164610A (en) * | 2017-06-07 | 2017-09-15 | 攀钢集团攀枝花钢铁研究院有限公司 | Molten steel increasing method for nitrogen |
-
2011
- 2011-09-08 CN CN2011203357760U patent/CN202209431U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359602A (en) * | 2011-09-08 | 2012-02-22 | 中钢集团吉林机电设备有限公司 | Hollow pipe shutoff valve for hollow electrode |
| CN107164610A (en) * | 2017-06-07 | 2017-09-15 | 攀钢集团攀枝花钢铁研究院有限公司 | Molten steel increasing method for nitrogen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120502 |