CN203096101U - Blast-furnace top distributing device - Google Patents
Blast-furnace top distributing device Download PDFInfo
- Publication number
- CN203096101U CN203096101U CN 201220712056 CN201220712056U CN203096101U CN 203096101 U CN203096101 U CN 203096101U CN 201220712056 CN201220712056 CN 201220712056 CN 201220712056 U CN201220712056 U CN 201220712056U CN 203096101 U CN203096101 U CN 203096101U
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- China
- Prior art keywords
- chute
- material flow
- regulating valve
- flow regulating
- blast
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Abstract
The utility model discloses a blast-furnace top distributing device which comprises a material flow regulating valve, a roller, a chute, stock rods and a PLC (Programmable Logic Controller) control device, wherein the material flow regulating valve is arranged at the bottom of a lower hopper; the roller is arranged at the lower part of the material flow regulating valve, and the chute is arranged below the roller through a rolling shaft; the number of the stock rod is only 2, the stock rods are arranged below the chute, and oppositely distributed on both sides of the wall of a blast furnace at an angle of 180 degrees; and the PLC control device is connected with the material flow regulating valve and the chute, and controls the opening degree gamma of the material flow regulating valve, the inclination angle Alpha of the chute and the constant-speed rotating angle Beta of the chute. The blast-furnace top distributing device disclosed by the utility model greatly reduces manual intervention, truly realizes the automatic control of the number of distributing circles, and has an extremely positive effect on the persist stable running of the blast furnace.
Description
Technical field
The utility model relates to a kind of blast furnace roof material distributing device, belongs to the blast furnace roof material distributing technical field.
Background technology
The blast furnace material distribution process, after blast furnace receives the cloth instruction, the material flow gate of its hopper at first reaches given aperture (being the γ angle) by processing requirement, at this moment furnace charge flows on the distributor chute behind the cloth feed roller by certain flow, this moment, distributor chute was raised to certain turning angle (being the α angle) by processing requirement, and distributor chute is carrying out at the uniform velocity rotation (being the β angle) on the horizontal plane direction simultaneously.In the certain cloth number of turns of process, furnace charge can be evenly distributed on the charge level of blast furnace like this.
Along with the continuous innovation of iron and steel enterprise's smelting technology, the blast furnace operating accuracy requirement is also improved day by day the particularly accurate control of roof material distributing.In the industry be at present: adopt proportional valve as material flow gate, calculate the materials flow amount by the aperture of ore density and proportional valve and control the cloth number of turns to blast furnace material distribution number of turns control most common form.The shortcoming of this mode has: proportional valve requires high to hydraulic efficiency oil progression, generally all will clean oil circuit length consuming time more than 8 grades, and expense is big; Complex structure easily stops up, difficult maintenance, and price is higher about 15000 yuan; Calculate the aperture of proportional valve by ore density.Because the degree of drying difference of environment and ore, the aperture that this mode calculates can not reach the precision of production requirement, relies on operator's execute-in-place experience to control substantially.
The utility model content
Technical problem to be solved in the utility model is, overcomes the shortcoming of prior art, and a kind of reduction equipment cost and time cost are provided, and safeguards low-cost blast furnace roof material distributing device easily.
In order to solve above technical problem, the utility model provides a kind of blast furnace roof material distributing device, comprises material flow gate, cylinder, chute, stock rod and PLC control device, and described material flow gate is arranged at the bottom of hopper; Described cylinder is arranged at the bottom of described material flow gate, and described chute is arranged at the below of described cylinder by roller assembly; Described stock rod is 2, is arranged at described chute below, and is 180 degree positioned opposite in the blast furnace furnace wall both sides; Described PLC control device is connected with described chute with described material flow gate, controls the inclination alpha angle of the aperture γ angle of described material flow gate, described chute and the angle beta angle that described chute at the uniform velocity rotates.
The beneficial effects of the utility model are: a kind of blast furnace roof material distributing device described in the utility model and distributing process thereof, owing to adopt conventional valve control, the hydraulic efficiency oil class requirement generally in the 6-7 level, is greatly reduced and cleans equipment cost and the time cost that oil circuit consumed; Conventional electromagnetic valve structure is simple, easy care, low price; According to the feedback of the cloth number of turns, adjust the aperture of material flow gate automatically, significantly reduced manual intervention, the real control cloth number of turns automatically that realizes, continual and steady operation has very positive effect to blast furnace.
Description of drawings
Fig. 1 is the structural representation of blast furnace roof material distributing device described in the utility model;
Fig. 2 is the schema of blast furnace roof material distributing method described in the utility model;
Fig. 3 is the schema of the automatic compensation process of the number of turns in the blast furnace roof material distributing method described in the utility model.
Among the figure:
1, hopper; 2, material flow gate; 3, cylinder; 4, chute; 5, furnace wall.
Embodiment
Embodiment 1
A kind of blast furnace roof material distributing device that present embodiment provides, its structural representation comprise material flow gate 2, cylinder 3, chute 4, stock rod and PLC control device as shown in Figure 1.Material flow gate 2 is arranged at the bottom of hopper 1; Described cylinder 3 is arranged at the bottom of described material flow gate 2, and described chute 4 is arranged at the below of described cylinder 3 by roller assembly.Described stock rod is 2, is positioned at chute 4 belows, near furnace wall 5, and is 180 degree positioned opposite; Described PLC control device is connected with described chute (4) with described material flow gate (2), controls the inclination alpha angle of the aperture γ angle of described material flow gate (2), described chute (4) and the angle beta angle that described chute (4) at the uniform velocity rotates.
This method has realized that substituting proportional valve with conventional magnetic valve carries out accurate angle control aperture, and can switch back original gear control aperture at any time.Avoided the problem that material flow gate can not be adjusted when the angle feedback assembly breaks down.
This method can be calculated the deviation of the number of turns of the cloth number of turns of ore and coke and setting separately, compensates respectively according to the angle that configures again.
Blast furnace roof material distributing method described in the utility model, carry out as follows:
(1) whether the raw material of judging hopper satisfies the cloth condition, if do not satisfy the cloth condition, then continues to put into raw material in hopper; If satisfy the cloth condition, then continue step (2);
(2) judge whether stock rod has reached stockline, if stock rod does not reach stockline, then represent not satisfy at present in the blast furnace cloth condition, the system wait stock rod arrives stockline; If stock rod arrives stockline, then begin cloth and mention stock rod;
(3) PLC control device control chute is transferred and is reached inclination alpha, and PLC control device control chute at the uniform velocity rotates then;
(4) after described chute arrived response position, the PLC control device was controlled conventional valve automatically, thereby made material flow gate γ angle arrive predetermined angular, the beginning cloth;
(5) chute at the uniform velocity rotates the number of turns of plan by inclination alpha, is empty until blanking, and cloth is finished;
(6) after cloth was finished, chute stopped the rotation, and promoted chute, put down stock rod, closed stream material variable valve, and cloth finishes, and after cloth was finished, writing down total cloth number of turns was the actual cloth number of turns.
Also comprise the automatic compensation process of the number of turns in the described method, the automatic compensation process of the described number of turns carries out as follows: after each cloth finishes, feed back the actual cloth number of turns, and according to the actual cloth number of turns of feedback with plan the cloth number of turns and compare, whether the number of turns of judging the actual rotation of chute is identical with the plan number of turns, if identical, then the aperture of material flow gate is constant, carries out cloth; If inequality, then recomputate the aperture of material flow gate, carry out cloth.
The described method that recomputates the aperture of material flow gate is: if the actual cloth number of turns greater than the plan cloth number of turns, increases the aperture of material flow gate; If the actual cloth number of turns less than the plan cloth number of turns, reduces the aperture of material flow gate.
The utility model utilizes existing equipment, do not increase any facility investment, after debugging during the blast furnace staying, there is not the precision height of direct usage ratio servo-valve though find the control accuracy of conventional magnetic valve simulation proportional valve, can satisfy actual needs fully.And the cloth number of turns function of compensation has automatically obtained checking after going into operation, each can compensate to suitable aperture automatically about 1 ~ 3 batch of material substantially after becoming material, it is more accurate more timely than manually to have saved the loaded down with trivial details of artificial calculating and result that computer calculates goes out.In order in time to follow the tracks of the cloth situation of every day, device is according to instructing after each blowing finishes, automatically write down this half batch of cloth time, lot number, front and back, the setting cloth number of turns, the actual cloth number of turns, important parameters such as setting aperture, actual aperture and the deviation number of turns, in time consult for the technologist, as following table 1.
Table 1:
Current technical renovation, the angle feedback assembly of use is that supporting original proportional servo valve is used, so do not spend any investment.But the result of use of bringing but is very significant, and at first, through the use of nearly half a year, the control accuracy of material flow gate in pre-determined range, satisfies the requirement of accurate blanking fully, and materials flow speed is more even; Secondly, when external conditions changes, correlation parameter is revised simple, need not manually in dangerous environment, to regulate, improved the security of producing, and original because frequent, per 2 ~ 3 months promptly can be damaged near switch near switch motion, now only need when overhauling, damping down get final product testing near the operating sensitivity of switch; The 3rd, omitted the servo-valve that oil is had relatively high expectations, reduced cost of equipment maintenance; The 4th, because we have kept original sequence of control near the on-off control aperture, so, also can be standby each other near switch and aperture feedback assembly, in case angle feedback assembly damage can easily switch to originally in the on-off control mode on picture, and very high handiness is arranged.
In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (1)
1. a blast furnace roof material distributing device is characterized in that, comprises material flow gate (2), cylinder (3), chute (4), stock rod and PLC control device, and described material flow gate (2) is arranged at the bottom of hopper; Described cylinder (3) is arranged at the bottom of described material flow gate (2), and described chute (4) is arranged at the below of described cylinder (3) by roller assembly; Described stock rod is 2, is arranged at described chute (4) below, and is 180 degree positioned opposite in the blast furnace furnace wall both sides; Described PLC control device is connected with described chute (4) with described material flow gate (2), controls the inclination alpha angle of the aperture γ angle of described material flow gate (2), described chute (4) and the angle beta angle that described chute (4) at the uniform velocity rotates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220712056 CN203096101U (en) | 2012-12-21 | 2012-12-21 | Blast-furnace top distributing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220712056 CN203096101U (en) | 2012-12-21 | 2012-12-21 | Blast-furnace top distributing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203096101U true CN203096101U (en) | 2013-07-31 |
Family
ID=48847519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220712056 Expired - Lifetime CN203096101U (en) | 2012-12-21 | 2012-12-21 | Blast-furnace top distributing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203096101U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103014210A (en) * | 2012-12-21 | 2013-04-03 | 江苏永钢集团有限公司 | Top distribution device and distribution method for blast furnace |
| CN115418422A (en) * | 2022-09-15 | 2022-12-02 | 包头钢铁（集团）有限责任公司 | Optimization method for reducing material distribution segregation of blast furnace |
-
2012
- 2012-12-21 CN CN 201220712056 patent/CN203096101U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103014210A (en) * | 2012-12-21 | 2013-04-03 | 江苏永钢集团有限公司 | Top distribution device and distribution method for blast furnace |
| CN115418422A (en) * | 2022-09-15 | 2022-12-02 | 包头钢铁（集团）有限责任公司 | Optimization method for reducing material distribution segregation of blast furnace |
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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: 20130731 |