CN209991793U

CN209991793U - On-line automatic slag tapping reconstruction system of steel pushing type heating furnace

Info

Publication number: CN209991793U
Application number: CN201920548874.9U
Authority: CN
Inventors: 孙洪美; 马莉莉; 莫建强
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-22
Filing date: 2019-04-22
Publication date: 2020-01-24
Anticipated expiration: 2029-04-22

Abstract

The utility model discloses a push away online automatic transformation system that slags tap of steel formula heating furnace for existing push away steel formula heating furnace and upgrade and reform transform, it fixes pusher and the nozzle on the water beam to be equipped with in the steel formula heating furnace to push away, it includes the slope stove bottom, adjacent two to push away steel formula heating furnace automatic transformation system that slags tap on line the bottom of slope stove is fixed with slag body conveyor in the middle of the slope stove bottom, the outer collection device of stove that slag body conveyor is connected, the slope stove bottom is located pusher below and is located existing water beam stand bottom, the funnel-shaped trapezium structure of the inversion of inversion is constituteed at two adjacent slope stove bottoms, the beneficial effects of the utility model are that: the novel collecting device in the furnace is used as a center and the online cleaning equipment is used, so that the slag in the furnace is cleaned online, the problem of slag accumulation is solved, the cleaning time is shortened, and the cleaning cost is reduced.

Description

On-line automatic slag tapping reconstruction system of steel pushing type heating furnace

Technical Field

The utility model relates to a steel rolling equipment among the metallurgical industry, especially push away the online automatic transformation system that slags tap of steel formula heating furnace that reforms transform that upgrades to existing steel formula heating furnace that pushes away.

Background

At present, in the production process of a push type heating furnace in the metallurgical industry, a large amount of slag is generated in a hearth, the push type heating furnace adopts a flat furnace bottom structure, and a billet falls off from a blank and is accumulated on the furnace bottom in the movement process from a steel loading side to a steel tapping side. The accumulation gradually increases to influence the operation of the furnace body. The oxidation burning loss is in direct proportion to the rise of the temperature, the higher the temperature is, the larger the burning loss is, the height of slag generated by the high-temperature heating furnace in half a year basically reaches the height of a burner, and then flame of the burner under the heating furnace is lifted, so that the flame is directly contacted with a steel billet, the local temperature of the steel billet is high, the steel billet is easy to melt, and the molten steel is easy to cause vicious accidents such as steel sticking and the like. And pile up in the stove along with the slag body, combustion space diminishes gradually, combustion efficiency has been caused and has been reduced, the steel billet upper and lower surface, the centre is big with the end-to-end difference in temperature, the fuel volume that makes the input increases, local difference in temperature has been aggravated, the oxidation loss of burning has been aggravated, furthermore, clearance slag body process needs the heating furnace to shut down, influence heating furnace operating efficiency, need a large amount of manual works during the clearance, high labor strength, it is dangerous big, pile up can not in time clear up to the slag body in the heating furnace, clearance slag body needs the heating furnace to shut down and consumes a large amount of artificial problems, this problem can be solved to urgent demand a new equipment.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides an online automatic slag tapping transformation system of a push steel type heating furnace.

The utility model discloses the concrete technical scheme who adopts does:

an on-line automatic slag tapping reconstruction system of a steel pushing type heating furnace is used for upgrading and reconstructing the existing steel pushing type heating furnace, the push steel type heating furnace is internally provided with a push steel machine and a burner which are fixed on a water beam, the push steel type heating furnace on-line automatic slag tapping reconstruction system comprises slope furnace bottoms, the bottom of the middle of each two adjacent slope furnace bottoms is fixed with a slag body conveying device, the furnace outer collecting device is connected with the slag body conveying device, the slope furnace bottom is positioned below the pusher and at the bottom of the existing water beam upright post, the two adjacent slope furnace bottoms form an inverted funnel-shaped trapezoidal structure, the design can automatically collect slag generated by steel billets on the pusher into the slag conveying device through the slope furnace bottom, the slag body is automatically conveyed to a slag body collecting device outside the furnace through the slag body conveying device, so that the automatic collection and cleaning of the slag body in the steel pushing type heating furnace are realized.

As the utility model discloses a further improvement, the slope stove bottom is fixed in existing water beam stand bottom, and its top is not higher than the nozzle, and its bottom is higher than ground, and the work that design slope stove bottom can not influence the nozzle like this can also walk the timely collection of the slag body that drops simultaneously, and the slope stove bottom does not contact with stove bottom ground simultaneously, has played the effect that the heat cut off, can have effectual holding furnace internal temperature.

Preferably, the trapezoid structure is an isosceles trapezoid structure, and the isosceles trapezoid structure can ensure that slag falling from two sides can all slide down and be collected at the same time, so that the situation that one side slides down and the other side is accumulated can not occur.

Preferably, two base angle A scopes of topside of isosceles trapezoid structure are 40 to 90, through experimental verification, the slag body can steady quick slide bottom when base angle A is in 40 to 50 within ranges, when base angle A is less than 40 the slip velocity on the inclined plane of slope bottom is on the small side, the slag body can not in time slide away on the inclined plane of slope bottom like this, and then lead to the slag body to pile up on the slope bottom, when base angle A is greater than 50, the slip velocity is too fast on the inclined plane of slope bottom for the slag body, can take place acutely to collide and cause and splash when falling to the bottom.

Preferably, the two base angles a of the top side of the isosceles trapezoid structure range from 45 °, and theoretical calculations and experiments prove that an object sliding down the slope can slide furthest on the plane of the bottom of the slope when the angle a is 45 °.

Preferably, the slope furnace bottom is built by using the castable, the slope angle and the smoothness of the slope furnace bottom can be ensured by using the precast mould for building by using the castable, and the construction speed and the construction efficiency can be effectively improved by using the castable building mode, wherein the castable is an unshaped refractory material which is most widely produced and used at present, is mainly used for forming integral structures such as various heating furnace linings and the like, and certain high-quality varieties can also be used for smelting furnaces, for example, the aluminate cement casting material can be widely used in various heating furnaces and other thermal equipment without slag and acid and alkali erosion, in some parts which have low working temperature and need high wear resistance, the phosphate castable is more suitable to be used, if corundum refractory materials are selected to be made into the castable, the method has better effect when used under reducing atmosphere, so that the wear resistance of the slope furnace bottom can be improved by adopting the castable to build the slope furnace bottom on the premise of lifting, preserving heat and insulating heat.

Preferably, the inclined plane of the slope furnace bottom is a smooth plane, and the design can effectively reduce the friction coefficient of the inclined plane and improve the sliding speed of slag bodies on the inclined plane.

Preferably, the smooth plane is a high-temperature-resistant steel plate or a high-temperature-resistant coating, and the wear resistance of the slope furnace bottom can be further improved by adopting the high-temperature-resistant steel plate or the inner high-temperature-resistant coating.

As a further improvement of the utility model, the conveying direction of the slag body conveying device is perpendicular to or parallel to the steel pushing direction of the steel pusher, and the existing space can be effectively utilized.

The utility model has the advantages that: through the newly-increased collection device and online cleaning equipment in the stove, make the interior slag body of stove realize online clearance, solved the slag body and piled up the problem, shorten clearance time, reduced the clearance expense.

Drawings

Fig. 1 is a longitudinal sectional structural view of the present invention;

FIG. 2 is a sectional view of the utility model shown in FIG. 1, taken along the line B- -B;

FIG. 3 is a cross-sectional view of the utility model of FIG. 2, taken along line C- -C;

FIG. 4 is a schematic view of the cross-sectional structure and the position of the angle A of the sloping hearth of the present invention shown in FIG. 1;

illustration of the drawings: 1-water beam column, 2-slope furnace bottom, 3-slag body conveying device, 4-burner and 5-collecting device outside furnace.

Detailed Description

The invention is described in detail below with reference to the following figures and specific embodiments:

the specific embodiment is as follows:

in the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, but do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

The first embodiment is as follows:

the on-line automatic slag tapping reconstruction system of the steel pushing type heating furnace is used for upgrading and reconstructing the existing steel pushing type heating furnace, a steel pushing machine and a burner 4 which are fixed on a water beam are arranged in the steel pushing type heating furnace, the on-line automatic slag tapping reconstruction system of the steel pushing type heating furnace comprises slope furnace bottoms 2, a slag body conveying device 3 is fixed at the bottom of the middle of each two adjacent slope furnace bottoms 2, an external furnace collecting device 5 connected with the slag body conveying device 3 is arranged, the slope furnace bottoms 2 are positioned below the steel pushing machine and at the bottom of the existing water beam upright post 1, the two adjacent slope furnace bottoms 2 form an inverted funnel-shaped trapezoid structure, as the existing water beam upright posts 1 are arranged in order, slopes are built at the bottom of each drainage beam upright post 1 to form the slope furnace bottoms 2, the adjacent slope furnace bottoms 2 are parallel to each other and are not contacted with each other, so that a groove with a funnel-shaped trapezoid cross section, when the slag body falls from the steel pusher, the slag body falls on the inclined plane of the slope furnace bottom 2, slides along the inclined plane of the slope furnace bottom 2 under the action of the gravity of the slag body, and finally slides to the middle part of the bottom of the groove of the funnel-shaped trapezoid structure, and because the slag body conveying device 3 is fixed at the middle bottom of the two adjacent slope furnace bottoms 2, when the slag body slides to the middle part of the bottom of the groove of the funnel-shaped trapezoid structure, the slag body conveying device 3 just conveys the slag body to the outside of the furnace, wherein the slag body conveying mechanism can be realized by a steel mesh belt conveyor or a spiral conveyor which is commonly used on the market, the mounting position of the slag body is required to be noticed by adopting a steel mesh belt conveyor or a spiral conveyor which is commonly used on the market, when the steel mesh belt conveyor is adopted, the upper plane of a steel mesh belt is not higher than the bottom of the slope furnace bottom 2, and when the spiral conveyor is adopted, the feed inlet of the screw conveyor is not higher than the bottom of the slope furnace bottom 2, and meanwhile, the steel mesh belt conveyor or the screw conveyor needs to be subjected to high temperature resistant protection treatment, and the high temperature resistant treatment can be carried out by adopting the existing technologies commonly used in the field, such as a water seal mechanism and the like.

The second embodiment is as follows:

the on-line automatic slag tapping reconstruction system of the pusher-type heating furnace is used for upgrading and reconstructing the existing pusher-type heating furnace, a pusher and a burner 4 which are fixed on a water beam are arranged in the pusher-type heating furnace, the pusher is fixed on the existing water beam and is fixed with the ground through an existing water beam upright post 1, the on-line automatic slag tapping reconstruction system of the pusher-type heating furnace comprises a slope furnace bottom 2, a slag body conveying device 3 is fixed at the bottom of the middle part of every two adjacent slope furnace bottoms 2, an external collecting device 5 connected with the slag body conveying device 3 is arranged at the bottom of the existing water beam upright post 1, the slope furnace bottom 2 is fixed at the bottom of the existing water beam upright post 1, the top of the slope furnace bottom is lower than the burner 4, the bottom of the slope furnace bottom is higher than the ground, the slope furnace bottom 2 can not influence the work of the burner 4 and can timely collect dropped slag bodies, simultaneously slope stove bottom 2 does not contact with stove bottom ground, has played the effect of hot wall, can have the effectual stove internal temperature that keeps, simultaneously slope stove bottom 2 is built by laying bricks or stones with the phosphate pouring material, and its characteristic of phosphate pouring material is the wearability, has just so improved slope stove bottom 2's wearability, and its inclined plane has inlayed high temperature resistant steel sheet or high temperature resistant coating simultaneously, further improves the smoothness that is used for improving the inclined plane, reduces coefficient of friction, improves the sliding speed of slag body on the inclined plane, collection device 5 is the upper shed box body structure that the steel sheet was made outside the stove, and its bottom is equipped with the gyro wheel and is convenient for transport, and its upper shed is located the terminal discharge gate below of spiral discharging machine and with discharge gate swing joint, slag body conveyor direction of delivery is perpendicular with pusher push steel direction.

The third concrete embodiment:

push away online automatic transformation system that slags tap of steel formula heating furnace for existing push away steel formula heating furnace and upgrade and reform transform, be equipped with pusher and nozzle 4 of fixing on the water beam in pushing away steel formula heating furnace, the pusher is fixed on existing water beam, and is in the same place through existing water beam stand 1 and ground is fixed, push away steel formula heating furnace and online automatic transformation system that slags tap includes slope stove bottom 2, adjacent two the middle bottom of slope stove bottom 2 is fixed with slag body conveyor 3, the outer collection device 5 of stove that slag body conveyor 3 is connected, slope stove bottom 2 is located pusher below and is located existing water beam stand 1 bottom, the funnel-shaped trapezium structure of the inversion of two adjacent slope stove constitutions inversion, slope stove bottom 2 is fixed in existing water beam stand 1 bottom, the trapezium structure is isosceles trapezoid structure, two base angle A of isosceles trapezoid structure are 45, theoretical calculation and experiments prove that when the angle A is 45 degrees, an object sliding down from the inclined plane can slide farthest on the plane at the bottom of the inclined plane, so that two bottom angles A of the top edge of the isosceles trapezoid structure are made to be 45 degrees, so that slag bodies can reach the slag body conveying device 3 positioned at the middle bottom of the two inclined furnace bottoms 2 as much as possible after sliding down from the inclined plane, the external furnace collecting device 5 is an upper opening box-shaped structure made of steel plates, rollers are arranged at the bottom of the external furnace collecting device to facilitate transportation, an upper opening of the external furnace collecting device is positioned below a tail end discharge port of the spiral discharging machine and movably connected with the discharge port, and the conveying direction of the slag body conveying device is perpendicular to the steel pushing direction of the steel pushing machine.

In the specific implementation:

a slope, namely a slope furnace bottom 2 is built between two vertical water beam upright posts 1 in a high-temperature section by using pouring materials, the tops of all slopes are flush and not higher than a lower burner 4, a trapezoidal structure is formed between the slope furnace bottom 2, two bottom angles A of the top edge of the trapezoid are 45 degrees, a slag body conveying device 3 is arranged in the trapezoidal structure, so that slag bodies falling from steel billets fall onto the slopes at a certain initial speed, as long as the angles A of the two slopes are 45 degrees, the slag bodies can slide to the bottom and are conveyed from the furnace to the outside of the furnace by the slag body conveying device 3 and fall into an external collecting device 5, in the figure 1, the slope furnace bottom 2 is symmetrically built between the two water beam upright posts 1, the tops are not higher than the lower nozzles of the burners 4, a trapezoidal space is formed between the two slopes, the slag body conveying device 3 is arranged in the trapezoidal structure and is a spiral conveyor, a high-temperature resistant or water sealing mechanism is adopted to enable the, the two slope surface angles A of the slope furnace bottom 2 are 45 degrees, the slope furnace bottom 2 is built by pouring materials, the surface is smooth, iron sheets can fall to the slope bottom and are conveyed to the outside of the furnace through the slag body conveying device 3, in the figure 2, the slope furnace bottom 2 installed at a high-temperature section is connected with a side wall at one side, the iron sheets cleaned by the slag body conveying device 3 are conveyed to the collecting device 5 outside the furnace, in the figure 3, the slope furnace bottom 2 is connected with the side wall at one side, the slag body conveying device 3 is installed in the slope furnace bottom 2, and the falling iron sheets are conveyed to the collecting device 5 outside the furnace.

The above embodiments have explained the present invention in detail. Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions, reductions, and substitutions made by the person skilled in the art within the spirit of the present invention also belong to the protection scope of the present invention.

Claims

1. Push away steel formula heating furnace and slag tap transformation system on line automatically for existing push away steel formula heating furnace upgrades and reforms transform, it fixes pusher and the nozzle on the water beam to be equipped with in the steel formula heating furnace, push away steel formula heating furnace and slag tap transformation system on line automatically and include slope stove bottom, adjacent two the bottom is fixed with slag body conveyor in the middle of the slope stove bottom, the outer collection device of stove that slag body conveyor is connected, its characterized in that, the slope stove bottom is located pushes away steel machine below and is located existing water beam stand bottom, and is two adjacent the funnel shaped trapezium structure of invering is constituteed at the slope stove bottom.

2. The on-line automatic slag tapping modification system for the pusher-type heating furnace as claimed in claim 1, wherein the slope furnace bottom is fixed at the bottom of an existing water beam column, the top of the slope furnace bottom is not higher than the burner, and the bottom of the slope furnace bottom is higher than the ground.

3. The on-line automatic slag tapping modification system for the pusher-type heating furnace according to claim 2, wherein the trapezoid structure is an isosceles trapezoid structure.

4. The on-line automatic tapping modification system for the pusher-type heating furnace according to claim 3, wherein two bottom angles A of the top side of the isosceles trapezoid structure range from 40 ° to 90 °.

5. The on-line automatic slag tapping modification system for the pusher-type heating furnace according to claim 4, wherein the two bottom angles A of the top edge of the isosceles trapezoid structure are 45 °.

6. The on-line automatic slag tapping modification system of the pusher-type heating furnace according to any one of claims 1 to 5, wherein the sloping hearth is constructed with a castable material.

7. The on-line automatic slag tapping modification system of the pusher-type heating furnace according to any one of claims 1 to 5, wherein the inclined surface of the sloping hearth is a smooth surface.

8. The on-line automatic slag tapping modification system for the pusher-type heating furnace according to claim 7, wherein the smooth surface is a high temperature resistant steel plate or a high temperature resistant coating.

9. The on-line automatic slag tapping modification system of the pusher-type heating furnace according to claim 7, wherein the conveying direction of the slag body conveying device is perpendicular to or parallel to the steel pushing direction of the pusher.