CN1043748A - A kind of blast furnace roof material distributing device - Google Patents
A kind of blast furnace roof material distributing device Download PDFInfo
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- CN1043748A CN1043748A CN 88109730 CN88109730A CN1043748A CN 1043748 A CN1043748 A CN 1043748A CN 88109730 CN88109730 CN 88109730 CN 88109730 A CN88109730 A CN 88109730A CN 1043748 A CN1043748 A CN 1043748A
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- clock
- truncated cone
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- blast furnace
- furnace roof
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Abstract
The present invention is on the basis of existing common double clock top distributing gear, with the great bell in a little clock and the truncated cone replacement primary structure, thereby obtains to reduce difficulty of processing, improves working accuracy, improves the promising result of maintenance condition; When truncated cone and the supporting use of hoisting appliance, the relative position by truncated cone and play clock changes, and can realize comparatively ideal dicyclo four peak clothes, this in improving, the output of small furnace, reduce coke ratio, the guarantee furnace condition anterograde all can produce significant positively effect.
Description
The present invention relates to metallurgical machinery equipment, more precisely to having the improvement of blast furnace roof material distributing device now.
Select the ideal bf fabric device, reach with the means of improving cloth form in the stove improve output, reduce coke ratio, simplified construction, shortening repair time, the purpose of enhancing productivity be the iron industry question of common concern.
Common two clock furnace roofs, its main fabric construction is: have a last clock that cooperates with the small powder bucket (little clock) and one to be positioned at clock below, the following clock (great bell) that cooperates with big hopper.This structure can only form monocyclic bimodal cloth (" V " type or " M " type), and its reason is that below the clock (great bell) can not directly feed in raw material than big area under being positioned at, and furnace charge can only lean on the nature angle of rest (repose) to roll into.The potential difference that forms between peak valley of cloth is excessive like this, and centre portions is too loose, and the coal gas amount that causes passing through from here is significantly higher than the coal gas amount that fringe region passes through, so that its contained heat energy and chemical energy be not fully utilized, and technico-economical comparison is lower.Moreover because the volume of clock (great bell) is big down, therefore, it has cooperated the precision sizing that contacts endless belt of airtight effect very difficult with big hopper.And each maintenance must begin by the part dismounting from furnace roof, and is long in time limit, efficient is low.
Sweden adopted a kind of three clocks, one awl top distributing gear, its primary structure comprises: the last clock that cooperates with the small powder bucket, be arranged in small powder bucket place revolving top, place the big hopper of clock below, clock and the following clock installed in big hopper bottom and be positioned at fixedly truncated cone below the big hopper etc.This equipment can be near furnace wall, between the furnace wall and the stove heart and three regional clothes of the stove heart to form the little mild charge level of potential difference between peak valley.The charge level of this form can guarantee furnace throat temperature and CO distribution uniform.Improve approximately 15% when its cloth amount obtains its economic optimum-rate ratio common double clock furnace roof from furnace wall when the stove heart is followed successively by 4: 2: 1, it is about 10% that coke ratio reduces, and almost exempted hanging and collapsed the material accident.But the sealing property of this furnace roof is bad, obtain reliable sealing effect, needs four little clocks to finish, if like this, its structure is just too complicated.For above-mentioned reasons, this top construction fails to obtain to promote.
The objective of the invention is: in conjunction with the characteristics of medium and small blast furnace, it is better to design a kind of simple in structure, easy access, installation, stopping property, and can improve the novel blast-furnace top distributing gear of cloth condition.
A kind of blast furnace roof material distributing device provided by the present invention comprises the furnace throat sealing cover that has coal gas export mouth and access hole, the hopper that cooperatively interacts and bell, revolving top and bell hoisting appliance.It is characterized in that: matching with little hopper, big hopper, is respectively to go up clock and two upper bells of following clock, is a truncated cone under following clock.
For obtaining the cloth effect at dicyclo four peaks, the truncated cone among the present invention is fitted with hoisting appliance, and this mechanism controls truncated cone obtains different working positions, and by truncated cone and cooperating of following clock finishing the cloth task.
Introduce constructional feature of the present invention in detail below in conjunction with Figure of description:
Figure of description 1 is a structural representation of the present invention;
Figure of description 2 is C-C views of Figure of description 1;
Figure of description 3 is BOB sectional views of Figure of description 2;
Figure of description 4 is D-D views of Figure of description 3;
Figure of description 5 is that the E of Figure of description 1 is to view;
Figure of description 6 is to use a kind of charge level form of cloth of the present invention;
Figure of description 7 is to use second kind of charge level form of cloth of the present invention;
Figure of description 8 is to use the third charge level form of cloth of the present invention;
Figure of description 9 is to use the 4th kind of charge level form of cloth of the present invention.
In above-mentioned accompanying drawing: the 1st, access opening, the 2nd, truncated cone, the 3rd, coal gas export mouth, the 4th, stock rod, the 5th, following clock (little clock) the 6th, big hopper, the 7th, last clock, the 8th, little hopper, the 9th, revolving top, the 10th, hoisting appliance, the 11st, furnace throat sealing cover, the 12nd, last clock access hole, the 13rd, truncated cone lifting guide hole, the 14th, contactless ring.
Blast furnace furnace roof as shown in Figure 1 is by furnace throat sealing cover (11), clock (5) and big hopper (6) enforcement sealing down.Coal gas is derived by the coal gas export mouth (3) that is positioned on the furnace throat sealing cover (11).To play clock (5) to make little clock into by the great bell in the ordinary skill is one of characteristics of the present invention.Because work the time is to finish the top closure task by clock down with the contactless ring (14) of big hopper (6), the following clock of institute need be through the mechanical workout of precisions such as grinding.The great bell volume of clock employing is big down in the former technology, brings very big difficulty to processing.Replace great bell with little clock (5), solved the problems referred to above effectively.
Assemble with the maintenance that little clock (5) replaces being also advantageous in that of great bell to help equipment.The great bell that former technology adopted because of its volume is big, whenever overhaul of the equipments, when changing great bell, must be dismantled by furnace roof successively, hangs out great bell at last, thereby once about about 15 days time of maintenance, and time-consuming, effort has influenced production efficiency.Replace great bell with little clock (5) among the present invention, and in little clock (5) below a truncated cone (2) is set, when little clock (5) dropped down onto with the close place of truncated cone (2), its cloth performance and former technology adopted the great bell cloth to be as good as; And the effect that little clock (5) and truncated cone (2) can take out and obtain shortening maintenance duration, enhance productivity by access opening (1) easily is better than existing common double clock furnace roof significantly.
In order further to improve the roof material distributing effect, during the present invention is primarily aimed at, the production characteristics of small furnace have designed a kind of device that can obtain dicyclo four peak clothes.This device matches truncated cone recited above (2) with a hoisting appliance (10), make truncated cone (2) obtain at least two cloth positions, and makes down the satisfied inner chamber that can fall into truncated cone (2) of clock (5) carry out the requirement of cloth.
When this scheme of enforcement, the position at ring material peak in the bottom surface diameter of following clock (5) and the inclination angle decision thereof.Diameter is excessive, and the effect of dicyclo cloth reduces; Diameter is too small, can make the blanking difficulty on the one hand, also can reduce the effect of asymmetric cloth on the other hand.Comparatively rational structure is: the bottom surface diameter of clock (5) is about half of truncated cone (2) bottom surface diameter under the order, perhaps makes down the bottom surface diameter of clock (5) consistent with the bottom surface diameter of last clock (7); The inclination angle of following clock (5) is consistent with the inclination angle of truncated cone (2).
The position at the bottom surface diameter of truncated cone (2) and inclination angle decision outer shroud material peak in the ordinary course of things, can make in truncated cone (2) bottom surface diameter and inclination angle and the prior art in the common double clock top distributing gear bottom surface diameter and the inclination angle of great bell identical.And note making in the mill the bottom surface diameter of the internal diameter suitable for reading of truncated cone (2) greater than following clock (5), so that it passes through.Usually, the internal diameter suitable for reading of truncated cone (2) is greater than 50～100 millimeters of the bottom surface diameters that plays clock (5).
Truncated cone (2) can wholely be made, and also can be assembled by several sections.The truncated cone design of Wall Thickness preferably can make it stand furnace charge wearing and tearing to reach the order of generation stove.
By hoisting appliance (10) control, when truncated cone (2) when rising to the extreme higher position, the plane should not be higher than the bottom surface of clock (5) down it on, and is advisable to hang down 20 millimeters by the working position of truncated cone (2) shown in accompanying drawing 1, the accompanying drawing 2; Truncated cone (2) is when reducing to extreme lower position, fall down clock (5) after, between the bottom surface of following clock (5) and truncated cone (2) end face certain distance should be arranged, in order to avoid furnace charge falls into truncated cone (2) inside; When toward the endocyclic position cloth, between following clock (5) and truncated cone (2) inwall enough distances should be arranged, smooth and easy to guarantee blanking.
The form of hoisting appliance (10) has multiple, for example: adopt the type of belt drive driving reel-chain-pull bar of hydro-cylinder-rack and wheel to finish the lifting of truncated cone (2); Perhaps adopt the form of hydro-cylinder-pull bar; Also can adopt other known structure formations.
The both sides of hoisting appliance promote answers the basic synchronization motion, and guarantees that truncated cone (2) is in horizontality when closed position.In case for the accessibility that guarantees the maintenance of elevator structure with when preventing that hoisting appliance from breaking down, truncated cone falls in the stove, the chain extension that truncated cone (2) is high temperature resistant with two, high-strength material is made is coupled to the bottom of big hopper (6).
In order to reduce manufacturing cost, and improve obturation effect, little hopper (8) in the present invention and greatly the lower end of hopper (6) all adopt removable contactless ring.
The last clock access hole (12) that utilizes the present invention to be arranged on the access opening (1) on the furnace throat sealing cover (11) and be arranged on the big hopper (6) can replace with clock (7), following clock (5) and truncated cone (2), contactless ring (14) etc. simultaneously fast.Like this, eliminated on the one hand common double clock furnace roof and changed down clock spended time in addition, thereby offered help improving operation rate of blast furnace because of changing the disadvantage that great bell must long-term damping down, making again on the one hand.
Operating features of the present invention is: when truncated cone (2) when being in lower position, fall down clock (5) to truncated cone (2) top, furnace charge flows near the furnace wall along frustoconical exterior surface; When truncated cone (2) during at the top dotted line position (seeing accompanying drawing 3), fall down clock (5), furnace charge is then along the conical surface and truncated cone (2) inwall inflow central region of clock (5) down.Change the ratio of cloth amount, the relative height that just can regulate inner and outer rings material peak.(seeing accompanying drawing 6～accompanying drawing 9).
Because clock (5) diameter reaches half of common great bell approximately under among the present invention, the blanking amount of its unit time only reaches about 0.4 times of common great bell, that is under the suitable situation of Intake Quantity, following clock charge time is about about 2.5 times of common great bell, and this not only can not influence the charging ability of clock down, and is opposite, but alleviated the great bell when filling with substance, furnace charge slumps, and influences gas flue, and is taken out of the defective of a large amount of stove dirt by coal gas.
Advantage of the present invention is: by the structural design of two clock one cone furnace roofs, eliminated the used great bell of existing common double clock furnace roof, thereby reduced difficulty of processing, improved machining accuracy, and improved maintenance, mounting condition, effectively improved economic benefit
When selecting the liftable truncated cone, by cooperating of lower clock and truncated cone, dicyclo four peak clothes have been realized. Both overcome the defective of common double clock roof material distributing, avoided again in three clocks, the one cone top distributing gear disadvantage that middle clock can not be airtight. Can obtain and improve furnace processor, reduce coke ratio and ensure the positive effect of the aspects such as furnace condition anterograde by the operation that adds high pressure of reasonable cloth.
Embodiment:
Select 300m3Blast furnace is pressed said structure and conventional processing technology is made top distributing gear, and wherein truncated cone, lower clock and relevant parts fit dimension are as follows:
Throat diameter: 3800mm; Truncated cone bottom surface external diameter: 2600mm
Truncated cone inclination angle: 53 °; Truncated cone wall thickness: 50mm;
Truncated cone internal diameter suitable for reading: 1400mm; Truncated cone height: 679mm;
Lower clock bottom surface diameter: 1300mm; Lower clock inclination angle: 53 °;
Minimum range: 500mm between lower clock and truncated cone inwall;
Lower clock stroke: 742mm;
Minimum range: 96mm when lower clock falls and between the truncated cone end face;
Truncated cone stroke: 826mm; Big hopper inwall inclination angle: 5656 °.
The truncated cone elevating mechanism adopts oil cylinder-rack and wheel band movable reel-chain-pull bar and then drives the type of belt drive of truncated cone.
Claims (2)
1, a kind of blast furnace roof material distributing device comprises the furnace throat sealing cover that has coal gas export mouth and access hole, the hopper that cooperatively interacts and bell, revolving top and bell hoisting appliance.It is characterized in that: match with little hopper, big hopper.Being respectively to go up clock and two upper bells of following clock, is a truncated cone under following clock.
2, a kind of blast furnace roof material distributing device according to claim 1, it is characterized in that: truncated cone is fitted with hoisting appliance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88109730 CN1013959B (en) | 1988-12-30 | 1988-12-30 | Top feed distributor of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88109730 CN1013959B (en) | 1988-12-30 | 1988-12-30 | Top feed distributor of blast furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1043748A true CN1043748A (en) | 1990-07-11 |
| CN1013959B CN1013959B (en) | 1991-09-18 |
Family
ID=4835449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88109730 Expired CN1013959B (en) | 1988-12-30 | 1988-12-30 | Top feed distributor of blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1013959B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101565765B (en) * | 2008-04-23 | 2010-12-08 | 中冶赛迪工程技术股份有限公司 | Elastic bridge connection mechanism of lifting bearing ring |
| CN103411419A (en) * | 2013-08-30 | 2013-11-27 | 山东泰石节能保温材料有限公司 | Rotary distributing device for cupola |
| CN103759271A (en) * | 2014-01-20 | 2014-04-30 | 扬州澄露环境工程有限公司 | Uniform distribution device |
| CN110643770A (en) * | 2019-11-18 | 2020-01-03 | 秦皇岛中青冶金阀门有限公司 | Material distribution device and method for small blast furnace bell-less equipment |
-
1988
- 1988-12-30 CN CN 88109730 patent/CN1013959B/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101565765B (en) * | 2008-04-23 | 2010-12-08 | 中冶赛迪工程技术股份有限公司 | Elastic bridge connection mechanism of lifting bearing ring |
| CN103411419A (en) * | 2013-08-30 | 2013-11-27 | 山东泰石节能保温材料有限公司 | Rotary distributing device for cupola |
| CN103759271A (en) * | 2014-01-20 | 2014-04-30 | 扬州澄露环境工程有限公司 | Uniform distribution device |
| CN110643770A (en) * | 2019-11-18 | 2020-01-03 | 秦皇岛中青冶金阀门有限公司 | Material distribution device and method for small blast furnace bell-less equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1013959B (en) | 1991-09-18 |
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