CN214327778U

CN214327778U - Molten steel inclusion denaturant feeding device

Info

Publication number: CN214327778U
Application number: CN202022275683.5U
Authority: CN
Inventors: 陈丹舟; 石思军; 张耘; 向志佳
Original assignee: Chengdu Yizhao Jingchuang Technology Co ltd
Current assignee: Chengdu Yizhao Jingchuang Technology Co ltd
Priority date: 2020-10-13
Filing date: 2020-10-13
Publication date: 2021-10-01
Anticipated expiration: 2030-10-13

Abstract

The utility model provides a molten steel inclusion denaturant feeding device, which comprises a basic lifting frame, a first moving mechanism, a second moving mechanism, a cantilever mechanism, a protection mechanism and a lifting mechanism; the first moving mechanism and the second moving mechanism are arranged below or above the basic lifting frame and connected with a cantilever mechanism comprising a material conveying component and a blanking component, so that the matrix type horizontal movement and feeding of the blanking component above a steel ladle can be realized; the protection mechanism comprises an adjusting section and a horn-like section which are fixedly connected with each other. The utility model can realize matrix material feeding with accurate positioning, and can ensure that the denatured material can go deep into the depth below the molten steel gasification area, the feeding effect is uniform, and the yield is high and stable; accurate, the even interpolation on line can be realized, the material impact that the molten steel arouses splashes when solving when adding, intelligent unmanned operation can be realized simultaneously.

Description

Molten steel inclusion denaturant feeding device

Technical Field

The utility model relates to a molten steel inclusion modification processing or molten steel alloy composition fine setting technical field, particularly, relate to a molten steel inclusion modifier drops into device, and the device can be used to get rid of and the modification processing of inclusion in the pure molten steel, also is applicable to the fine setting of molten steel alloy composition.

Background

In the steel making process, the inclusion denaturant is an important means for removing the inclusions to change the material performance.

After the molten steel enters the ladle, the components and the temperature of the molten steel basically meet the requirements, and the fine adjustment of the components and the temperature is mainly performed at the moment. However, in the high-temperature environment of a steel mill, the high-temperature resistance and oxidation resistance of the inclusion denaturant are weak, so that uniform and accurate quantitative addition is difficult to realize; after the inclusion denaturant is added into the molten steel, the materials impact the molten steel to cause splashing, which causes environmental damage and even endangers the safety of operators.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve at least one of the above-mentioned not enough of prior art existence.

In order to achieve the above object, the present invention provides a molten steel inclusion denaturant feeding device, which includes a basic lifting frame, a first moving mechanism, a second moving mechanism, a cantilever mechanism, a protection mechanism and a lifting mechanism, wherein the basic lifting frame has a height extending upward from the ground; the first moving mechanism comprises a first guide rail fixed on the top of the basic lifting frame along a first direction and a first trolley capable of reciprocating on the first guide rail along the first direction; the second moving mechanism comprises a second guide rail fixed above or below the first trolley along a second direction and a second trolley capable of moving on the second guide rail in a reciprocating manner along the second direction, and the second direction and the first direction are perpendicular to each other and are both located on a horizontal plane; the cantilever mechanism comprises a material conveying part and a blanking part, the material conveying part is arranged along the first direction and is provided with one end fixedly connected with the second trolley, the blanking part is arranged along the up-down direction and is provided with an upper end connected with the other end of the material conveying part, and the up-down direction is vertical to the first direction and the second direction; the protection mechanism is arranged along the up-down direction and comprises an adjusting section and a horn-like section, the adjusting section and the horn-like section are fixedly connected with each other, the caliber of the horn-like section gradually increases towards the molten steel surface, and the adjusting section is sleeved outside the blanking part; the lifting mechanism is connected with the adjusting section of the protection mechanism and can lift or descend the adjusting section to adjust the distance between the horn-like section of the protection mechanism and the liquid level of the steel.

Compared with the prior art, the beneficial effects of the utility model include at least one of following content: the matrix material feeding capable of being accurately positioned can be realized, the modified material can be enabled to deeply enter a preset depth position (for example, below 2 m) below a molten steel gasification zone, the feeding effect is uniform, and the yield is high and stable; accurate, the even interpolation on line can be realized, the material impact that the molten steel arouses splashes when solving when adding, intelligent unmanned operation can be realized simultaneously.

Drawings

FIG. 1 is a schematic plan view of an exemplary embodiment of a molten steel inclusion modifier charging apparatus according to the present invention;

FIG. 2 shows a schematic view of the structure of FIG. 1 in the direction C-C;

FIG. 3 shows an enlarged partial view of the area labeled IV in FIG. 2;

fig. 4 shows a partial enlargement of the region marked V in fig. 2.

The drawings illustrate the following:

the device comprises a basic lifting frame 1, a first moving mechanism 2, a first guide rail 2a, a first trolley 2b, an electric winch 2c, a second moving mechanism 3, a second guide rail 3a, a second trolley 3b, an electric winch 3c, a cantilever mechanism 4, a material conveying part 4a, a blanking part 4b, a speed-reducing and shock-absorbing member 4c, a protection mechanism 5, an adjusting section 5a, a horn-like section 5b, a lifting mechanism 6, a fixed pulley 6a, a cable system 6b, a winch 7 and a counterweight 8.

Detailed Description

Hereinafter, the molten steel inclusion denaturant supply apparatus of the present invention will be described in detail with reference to the exemplary embodiments.

In an exemplary embodiment of the present invention, the molten steel inclusion denaturant feeding device includes a base lifting frame, a first moving mechanism, a second moving mechanism, a cantilever mechanism, a shield mechanism, and a lifting mechanism.

Specifically, the base lift rack has a height extending upwardly from the ground. For example, the base lifting frame may be a frame of rigid rods to facilitate mounting of other associated mechanisms and components, etc. thereto.

The first moving mechanism includes a first rail fixed to the top of the base lifting frame in a first direction (e.g., left-right direction) and a first carriage capable of reciprocating on the first rail in the first direction. Here, the movement of the first carriage can be effected by means of a motor or an electric winch. For example, the stroke of the first carriage reciprocating in the first direction may be in the range of 2000 mm; the traveling speed of the first trolley can be 200-1000 mm/s. In addition, the frame of the basic lifting frame extending along the first direction can be set into a guide rail shape, so that the basic lifting frame and the first guide rail are integrally molded.

The second moving mechanism includes a second rail fixed above or below the first carriage in a second direction (e.g., a front-rear direction) and a second carriage capable of reciprocating on the second rail in the second direction, the second direction being perpendicular to the first direction and both being on a horizontal plane. Here, the movement of the second carriage can be effected by means of a motor or an electric winch. For example, the stroke of the second carriage reciprocating in the second direction may be in the range of 2000 mm; the traveling speed of the second trolley can be 200-1000 mm/s. In addition, the frame of the first trolley extending along the second direction can be set into a guide rail shape, so that the first trolley and the second guide rail are integrally molded.

The cantilever mechanism comprises a material conveying part and a blanking part. The material conveying part is arranged along the first direction and is provided with one end (which can be called a feeding end) fixedly connected with the second trolley, a conveying part (such as a chute or a conveyor belt) for conveying modified materials (such as deoxidizer, alloy element regulator and the like) and the other end (which can be called a discharging end) connected with the blanking part. The one end, the conveying part and the other end of the material conveying part are connected in sequence. For example, the denatured material may be a deoxidizer, an alloying element modifier, or the like, and the conveying section may be a chute or a conveyor belt. The radial size of the denatured material can be selected from 10-150 mm. The deformable material may be spherical. The feeding component is arranged along the up-down direction, the up-down direction is vertical to the first direction and the second direction, and the feeding component is provided with an upper end connected with the discharging end of the feeding component, an extending part extending along the up-down direction and a lower end connected with the protection mechanism. The upper end, the extension part and the lower end of the blanking part are connected in sequence. For example, the blanking member may be a high-temperature-resistant rigid pipe, and further may be a high-temperature-resistant rigid rectangular pipe or a high-temperature-resistant rigid circular pipe. That is, the material conveying part and the material discharging part form an L-shaped material traveling path which is rotated by 180 degrees at the right. In addition, the proportion of the maximum cross-sectional area of the denaturant along the horizontal plane to the cross-sectional area of the same position of the blanking part can be 80-98%, that is, a gap with a corresponding proportional size is formed between the denaturant and the inner wall of the blanking part when viewed from the cross section. Thus being beneficial to the stability and the smoothness of the blanking process.

The protection mechanism is arranged along the up-down direction and comprises an adjusting section and a horn-like section, wherein the adjusting section and the horn-like section are fixedly connected with each other, and the caliber of the horn-like section gradually increases towards the liquid level of the steel (namely, the caliber of the horn-like section faces downwards). The adjusting section is sleeved outside the blanking part and can move relative to the blanking part, and the adjusting section and the blanking part can move relative to each other through the two flanges. However, the present invention is not limited thereto. In addition, the adjusting section can be a high-temperature-resistant rigid pipe, and further can be a high-temperature-resistant rigid round pipe or a high-temperature-resistant rigid rectangular pipe.

Elevating system and protection mechanism adjust the section and be connected, and can promote or descend and adjust the section to the realization is to the regulation of protection mechanism height, and then realizes adjusting protection mechanism the distance of class loudspeaker section and molten steel level prevents that the molten steel from splashing. The lift mechanism may include a fixed pulley disposed on the boom mechanism and a tether (e.g., a wire rope) connected to the guard mechanism. Through the cooperation of elevating system, protection machanism and cantilever mechanism, can realize making the lifting stroke of class loudspeaker section in 800mm within range.

Through setting up first moving mechanism, second moving mechanism and cantilever mechanism, can realize carrying out matrix continuous input denaturant in to the molten steel, realize its even interpolation. For example, continuous feeding of materials in a rectangular range of 0-2000 mm can be achieved. In addition, the moving speed of the first trolley of the first moving mechanism and the moving speed of the second trolley of the second moving mechanism can be adjusted to effectively control the material feeding efficiency and effect.

In another exemplary embodiment of the present invention, the molten steel inclusion denaturant feeding device may further include a height adjusting mechanism capable of adjusting a height of a top of the base lifting frame on the basis of the structure according to the above exemplary embodiment, so as to raise or lower the height of the top of the base lifting frame by 10 to 500 mm. For example, the height adjustment mechanism may be implemented by a rotating threaded fit or a hydraulic cylinder. In addition, the cantilever mechanism can also comprise a speed reduction and shock absorption member which is arranged at the position far away from the material conveying part in the upper end of the blanking part, namely, the speed reduction and shock absorption member is arranged in the upper end of the blanking part and is opposite to the material discharging end of the material conveying part in the front direction, so that the rotation of the denaturant entering the blanking part from the material conveying part can be reduced or weakened, the state that the denaturant enters molten steel can be adjusted, and the more easily controlled and uniform depth and position of the denaturant entering the molten steel can be further obtained. The deceleration damping member may be a heat-resistant deceleration damping member or a fire-resistant deceleration damping member. For example, the deceleration shock-absorbing member may include an arc-shaped elastic steel wire.

In still another exemplary embodiment of the present invention, the molten steel inclusion denaturant feeding device is based on the structure according to any one of the above exemplary embodiments, and the protection mechanism thereof is composed of a metal skeleton, a refractory fiber and a first high temperature resistant coating layer, the refractory fiber is formed on the inner wall and the outer wall of the metal skeleton, and the first high temperature resistant coating layer is coated on the refractory fiber, thereby forming a regulation section and a horn-like section of the refractory fiber and the high temperature resistant coating layer which are coated on the surface of the main structure and have the main structure. That is, the metal skeleton constitutes the main structure of the adjusting section and the horn-like section. In addition, cantilever mechanism still can include the second high temperature resistant coating of cladding on the inside and the outer wall of unloading part, just the second high temperature resistant coating is set up to be from down to the top cladding and is accounted for 1/2 to whole of unloading part height. That is, the portion of the blanking member above 1/2, which is close to the molten steel portion, is coated with the second high temperature resistant coating. The fire-resistant temperature of the first high-temperature-resistant coating can be 1500-2500 ℃, and the fire-resistant temperature of the second high-temperature-resistant coating can be 1000-2000 ℃. In addition, the first high temperature resistant coating may also have an anti-adhesion function. The refractory fiber, the first high-temperature-resistant coating and the second high-temperature-resistant coating are arranged, so that the service life of the protection mechanism can be prolonged, and the adhesion of splashing molten steel on the protection mechanism can be effectively reduced.

In addition, the upper end of the adjusting section can be fixedly connected with a concave flange with the inner diameter size capable of being sleeved outside the blanking part, the lower end of the blanking part is fixedly connected with a flange with the outer diameter size capable of being contained in the adjusting section, and the concave flange and the flange are provided with through holes penetrating in the vertical direction. Can enough effectively realize like this that the regulation section of protection machanism cooperates with the movable cover of the unloading part of cantilever mechanism, also can form steam or flue gas passageway between regulation section and unloading part, and then can prevent steam or flue gas gathering effect from appearing, also can avoid steam or flue gas to disturb or even hinder the whereabouts process of denaturant because of going upward or gathering. The through hole may also be in the shape of a circular band. In addition, the side wall of the adjusting section and/or the blanking part can be directionally perforated under the condition of not deteriorating the high-temperature rigidity of the adjusting section and the blanking part, so that the gathering effect of hot air or smoke can be prevented, and the phenomenon that the falling process of the denaturant is interfered or even hindered due to the ascending or gathering of the hot air or the smoke can be avoided.

In another exemplary embodiment of the present invention, the molten steel inclusion denaturant feeding device may further include a molten steel surface distance collecting device provided at the upper end of the blanking member on the basis of the structure according to any one of the above exemplary embodiments, so as to collect the distance between the upper end and the molten steel surface in real time, thereby obtaining the falling distance of the denaturant in time.

In addition, in another exemplary embodiment of the present invention, the molten steel inclusion denaturant feeding device may further include an electric control unit disposed at a middle portion, a lower portion, or a side portion of the base lifting frame, based on the structure including any one of the above exemplary embodiments. The electric control unit can be electrically connected with one or more of the first trolley, the second trolley, the lifting mechanism and the material conveying part so as to control the operation of the first trolley, the second trolley and the lifting mechanism and the opening and closing of the material conveying part. The electric control unit can be integrated in the middle, the lower part or the side part of the basic lifting frame, and can also be independently formed into a cabinet. The power units of the first trolley, the second trolley and the lifting mechanism can adopt modes such as a servo motor and PLC (programmable logic controller) programming control, so that intelligent unmanned operation is realized.

FIG. 1 is a schematic plan view of an example embodiment of a molten steel inclusion modifier charging apparatus according to the present invention. Fig. 2 shows a schematic view of the structure of fig. 1 in the direction C-C, corresponding to a front view. Fig. 3 and 4 show enlarged partial views of the regions marked IV and V in fig. 2, respectively.

As shown in fig. 1 and 2, the molten steel inclusion denaturing agent feeding apparatus according to the present exemplary embodiment includes a base lifting frame 1, a first moving mechanism 2, a second moving mechanism 3, a cantilever mechanism 4, a shielding mechanism 5, and a lifting mechanism 6.

The base lift frame 1 may be a frame of rigid rods having a height extending upwardly from the ground to facilitate mounting of other associated mechanisms and components and the like thereon. Fig. 4 shows a schematic connection of the basic carrier.

The first moving mechanism 2 includes a first rail 2a fixed below or above the top of the base lifting frame in a first direction (left-right direction in fig. 1) and a first carriage 2b capable of reciprocating on the first rail 2a in the first direction. Here, the movement of the first carriage can be effected by means of an electric winch 2 c. Here, the frame of the base raising frame extending in the first direction is directly formed in a rail shape, and the base raising frame 1 and the first rail 2a are integrally molded.

The second moving mechanism 3 includes a second rail 3a fixed below or above the first carriage in a second direction (front-rear direction in fig. 2) and a second carriage 3b capable of reciprocating on the second rail 3a in a second direction, which is perpendicular to the first direction and is on a horizontal plane. Here, the movement of the second carriage can be effected by means of an electric winch 3 c. In addition, the frame of the first carriage extending in the second direction is directly provided in the shape of a rail, so that the first carriage 2b and the second rail 3a are integrally molded.

The arm mechanism 4 includes a feeding part 4a, a discharging part 4b, and a deceleration damping member 4 c. The feeding member 4a is disposed along the first direction and has one end (e.g., left end in fig. 1) fixedly connected to the second carriage, a conveying portion formed by the chute for conveying the denatured material, and the other end (e.g., right end in fig. 1) connected to the discharging member. The left end, the conveying part and the right end of the material conveying part are connected in sequence. Fig. 3 shows a schematic view of the connecting part of the feeding part and the blanking part.

The feeding member 4b is disposed in the vertical direction shown in fig. 2, which is perpendicular to both the first direction and the second direction, and has an upper end connected to the discharge end of the feeding member 4a, an extending portion extending in the vertical direction, and a lower end connected to the guard mechanism 5. The blanking part is a high-temperature-resistant rigid rectangular pipe, and the upper end, the extension part and the lower end of the blanking part are sequentially connected. Furthermore, the proportion of the largest cross-sectional area of the denaturing agent in the horizontal plane to the cross-sectional area of the same position of the blanking part may be 85%, that is, a gap of a corresponding proportional size is formed between the denaturing agent and the inner wall of the blanking part as viewed in cross section. Thus being beneficial to the stability and the smoothness of the blanking process.

The speed reduction and shock absorption member 4c is an arc-shaped elastic steel wire and is arranged at the position far away from the feeding part in the upper end of the feeding part, so that the rotation of the denaturant entering the feeding part from the feeding part can be reduced or weakened, the denaturant can be adjusted to enter molten steel, and the more controllable and uniform depth and position of the denaturant entering the molten steel can be further obtained.

The guard mechanism 5 is provided in the up-down direction shown in fig. 2, and includes an adjusting section 5a and a horn-like section 5b having a diameter gradually increasing toward the surface of the molten steel (i.e., a diameter facing downward), which are fixedly connected to each other. The adjusting section 5a can be a high-temperature resistant rigid round pipe which is sleeved outside the blanking part and can move relative to the blanking part. The upper end of the adjusting section is fixedly connected with a concave flange, and the lower end of the blanking part is fixedly connected with a convex flange. The inner diameter size of the concave flange meets the requirement that the concave flange can be sleeved outside the blanking part and is smaller than the outer diameter of the flange, and through holes penetrating through the concave flange and the flange in the vertical direction are formed in the concave flange and the flange.

The lifting mechanism 6 comprises a fixed pulley 6a arranged on the cantilever mechanism and a cable system 6b connected with the adjusting section 5a of the protection mechanism, and can lift or descend the adjusting section to realize the height adjustment of the protection mechanism, so that the distance between the horn-like section 5b of the protection mechanism and the liquid steel surface is adjusted, and the molten steel is prevented from splashing. In addition, for convenient control, the lifting mechanism 6 may further include a winch 7 and a counterweight 8 to facilitate lifting control. However, the embodiment is not limited to this, and the lifting mechanism may have other structures as long as the adjusting section can be lifted or lowered.

The utility model discloses a use can be: a throwing point is determined in the throwing matrix, the cantilever mechanism is horizontally moved and adjusted to a position needing throwing through the first moving mechanism and the second moving mechanism, the horn-like section of the protection mechanism is adjusted to a proper height through the lifting mechanism, and materials are transmitted and thrown through the cantilever mechanism. The process is continuously circulated to realize the material feeding once and again.

The utility model discloses a matrix that the device can realize pinpointing is put in, and can make the degeneration material go deep into the predetermined degree of depth position below the molten steel gasification district (for example, below 2 m), and the input effect is even, and the yield is high and stable.

Although the present invention has been described above in connection with exemplary embodiments and the accompanying drawings, it will be apparent to those of ordinary skill in the art that various modifications may be made to the above-described embodiments without departing from the spirit and scope of the claims.

Claims

1. A molten steel inclusion denaturant feeding device is characterized by comprising a basic lifting frame, a first moving mechanism, a second moving mechanism, a cantilever mechanism, a protection mechanism and a lifting mechanism, wherein,

the base lift rack has a height extending upwardly from a ground surface;

the first moving mechanism comprises a first guide rail fixed on the top of the basic lifting frame along a first direction and a first trolley capable of reciprocating on the first guide rail along the first direction;

the second moving mechanism comprises a second guide rail fixed above or below the first trolley along a second direction and a second trolley capable of moving on the second guide rail in a reciprocating manner along the second direction, and the second direction and the first direction are perpendicular to each other and are both located on a horizontal plane;

the cantilever mechanism comprises a material conveying part and a blanking part, the material conveying part is arranged along the first direction and is provided with one end fixedly connected with the second trolley, the blanking part is arranged along the up-down direction and is provided with an upper end connected with the other end of the material conveying part, and the up-down direction is vertical to the first direction and the second direction;

the protection mechanism is arranged along the up-down direction and comprises an adjusting section and a horn-like section, the adjusting section and the horn-like section are fixedly connected with each other, the caliber of the horn-like section gradually increases towards the molten steel surface, and the adjusting section is sleeved outside the blanking part;

the lifting mechanism is connected with the adjusting section of the protection mechanism and can lift or descend the adjusting section to adjust the distance between the horn-like section of the protection mechanism and the liquid level of the steel.

2. The molten steel inclusion denaturant feeding apparatus according to claim 1, wherein the base lifting frame further includes a height adjusting mechanism capable of adjusting a height of the top portion of the base lifting frame.

3. The molten steel inclusion denaturant feeding apparatus as claimed in claim 1, wherein the arm mechanism further includes a deceleration shock-absorbing member provided in the upper end of the blanking member at a position remote from the feeding member.

4. The molten steel inclusion denaturant feeding apparatus as claimed in claim 1, wherein the shielding mechanism includes a metal frame, refractory fibers formed on an inner wall and an outer wall of the metal frame, and a first high temperature-resistant coating layer coated on the refractory fibers.

5. The molten steel inclusion denaturant feeding device according to claim 4, wherein the cantilever mechanism further includes a second refractory coating covering an inner portion and an outer wall of the blanking member, and the second refractory coating is provided so as to cover from bottom to top and occupy 1/2 to all of a height of the blanking member.

6. The molten steel inclusion denaturant feeding device according to claim 1, wherein an upper end of the adjustment section is fixedly connected to a recessed flange having an inner diameter dimension capable of being fitted around the discharging member, a lower end of the discharging member is fixedly connected to a flange having an outer diameter dimension capable of being accommodated in the adjustment section, and the recessed flange and the flange are each provided with a through hole penetrating in the up-down direction.

7. The molten steel inclusion denaturant feeding apparatus according to claim 1, wherein a stroke of the first carriage reciprocating in the first direction is in a range of 2000mm, and a stroke of the second carriage reciprocating in the second direction is in a range of 2000 mm.

8. The molten steel inclusion denaturant feeding apparatus as claimed in claim 1, wherein the maximum cross-sectional area of the denaturant along the horizontal plane accounts for 80 to 98% of the cross-sectional area of the blanking member at the same position.

9. The molten steel inclusion denaturant feeding apparatus as claimed in claim 1, further comprising a molten steel surface distance collecting means provided at the upper end of the blanking member.