CN211438081U

CN211438081U - Bag bottom

Info

Publication number: CN211438081U
Application number: CN202020012111.5U
Authority: CN
Inventors: 郭振峰; 娄军峰; 李天清; 王艳娜; 任红霞
Original assignee: Puyang Refractories Group Co Ltd
Current assignee: Puyang Refractories Group Co Ltd
Priority date: 2020-01-05
Filing date: 2020-01-05
Publication date: 2020-09-08
Anticipated expiration: 2030-01-05

Abstract

The utility model discloses a package end, including hanging mechanism's residual and package end body, hang mechanism's residual and reserve for the package end installation after target in place the part on the body of package end the pouring material layer of coating on the upper surface of package end body, the pouring material layer covers completely hang mechanism's residual. The utility model provides a hang mechanism's working portion can dismantle from hanging mechanism's residual portion to the pouring material layer of coating thoroughly stops the molten steel and directly hangs mechanism's working portion or hang the remaining contact of mechanism, has reduced and has oozed steel, bleed-out risk, has increased factor of safety, has improved the resistant material life-span of carbon-free prefabricated section.

Description

Bag bottom

Technical Field

The utility model relates to an industrial furnace technical field. In particular to a ladle bottom.

Background

With the development of metallurgical technology, the application conditions of the steel ladle are increasingly harsh, and the quality requirement of customers on clean steel is higher and higher. Along with the improvement of ladle LF, RH, VD refining proportion, the residence time of molten steel in the ladle is prolonged, and correspondingly, the requirement on the service life of refractory materials is higher and higher. In recent years, the refractory for a ladle has been gradually reduced in carbonization and non-carbonization.

The carbon-free precast block for the ladle working lining is developed by taking high-alumina corundum as aggregate and fused magnesia, alumina micropowder and silica micropowder as matrix materials. The results show that: MgO and Al₂O₃The volume expansion effect associated with the reaction to form spinel allows the preform to achieve a lower post-firing linear shrinkage. With conventional Al₂O₃Compared with MgO bricks, the precast block combined by oxide micropowder has lower air-developing rate, higher high-temperature flexural strength and good slag resistance. The application result shows that the ladle working lining built by the precast blocks has better heat preservation effect, can effectively reduce the temperature drop of molten steel in the refining process, can effectively reduce the carbon increment of the molten steel, and is beneficial to improving the quality of the molten steel.

At present, at home and abroad, the ladle bottom masonry structure mainly comprises two types, wherein one type is aluminum-magnesium-carbon bricks or magnesium-aluminum-carbon masonry produced by a mechanical pressing process, and the other type is cast construction by adopting a carbon-free precast block in an impact area and adopting a high-aluminum casting material in a non-impact area.

The carbon-free precast block has the advantages of good scouring resistance, stable volume and the like, and is used for the position of an impact area on the ladle bottoms of a plurality of ladles at present, and the single weight of the carbon-free precast block is generally between 800kg and 4000 kg. The traditional lifting lug additionally installing mode has many risks in safety and application, if the lifting lug is not cut, the direct contact between the lifting lug and molten steel can aggravate the melting of the lifting lug, so that the effective thickness of a working layer is thinned, and the service life requirement of the carbon-free precast block is reduced; if the lifting lugs are cut off, the residual bolts can be melted, the service life of the ladle bottom is shortened, and the risks of steel infiltration and steel leakage of molten steel are greatly increased.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model aims to solve the technical problem that a package end of reducible bleed-out risk, improvement life is provided.

In order to solve the technical problem, the utility model provides a following technical scheme: the utility model provides a package end, includes hangs mechanism's residual and package end body, hang the mechanism's residual and reserve for the package end installation after targetting in place the part on the body of package end the casting material layer of coating on the upper surface of package end body, the casting material layer covers completely hang the mechanism's residual.

The bag bottom further comprises a hanging mechanism working part, the hanging mechanism residual part and the hanging mechanism working part form a hanging device, and the hanging mechanism residual part and the hanging mechanism working part are fixedly connected or detachably connected.

The ladle bottom is detachably connected with the hanging mechanism residual part through threaded matching.

The ladle bottom, the hanging device comprises a lifting eye bolt, a hexagon nut, a flat washer, a pressing plate, a steel ring, a PVC pipe, a rib plate and a plug;

the lifting eye bolt, the hexagon nut, the flat washer, the pressure plate, the steel ring and the PVC pipe form a working part of the hanging mechanism, and the rib plate and the plug form a residual part of the hanging mechanism; or the lifting eye bolt, the hexagon nut and the flat washer form the working part of the hanging mechanism, and the pressing plate, the steel ring, the PVC pipe, the rib plate and the plug form the residual part of the hanging mechanism;

the screw end of the lifting bolt sequentially penetrates through the hexagon nut, the flat washer, the other hexagon nut, the pressing plate, the steel ring, the PVC pipe, the rib plate and the plug from top to bottom, and the M-shaped external thread of the screw end of the lifting bolt is in threaded connection with the hexagon nut, the steel ring, the rib plate and the M-shaped internal thread of the plug respectively; and the lower surface of the rib plate is welded with the upper surface of the pipe plug.

The ladle bottom body is an integrally formed ladle bottom prefabricated block.

The ladle bottom is integrally formed with the nozzle brick cup and the air brick cup.

The ladle bottom body is an integrally formed ladle bottom precast block, and the ladle bottom precast block comprises a ladle bottom impact area and a ladle bottom non-impact area; the thickness of the ladle bottom impact area is greater than that of the ladle bottom non-impact area; the hanging devices are uniformly arranged on the ladle bottom non-impact area along the circumferential direction of the ladle bottom precast block.

In the ladle bottom, the distance between the lower surface of the plug and the lower surface of the non-impact area of the ladle bottom is greater than or equal to 40 mm.

In the ladle bottom, the ladle bottom precast block is provided with a water gap brick hole and an air brick hole; the ventilative brick hole of seat is the circular port, and is located the package end strikes district both sides in the package end non-impact district, the brick hole of water gap seat is semi-circular hole, and is located the circumference edge in the package end non-impact district.

The lifting eye bolt consists of a lifting lug, an upper screw rod and a lower screw rod, the lifting lug is fixedly connected with the upper screw rod, the lifting lug, the upper screw rod, the upper hexagon nut and the flat washer form a working part of the hanging mechanism, and the lower hexagon nut, the lower screw rod, the pressing plate, the steel ring, the PVC pipe, the rib plate and the plug form a residual part of the hanging mechanism; the upper screw rod sequentially penetrates through the hexagonal nut and the flat washer on the upper part from top to bottom and is in threaded connection with the hexagonal nut on the lower part; the top end of the lower screw rod is in threaded connection with the hexagonal nut at the lower part, and the bottom end of the lower screw rod sequentially penetrates through the pressing plate, the steel ring, the PVC pipe, the rib plate and the plug.

The technical scheme of the utility model following profitable technological effect has been obtained:

the utility model provides a ladle end has higher high temperature bending strength, good slag resistance to can effectual reduction molten steel recarburization, be favorable to improving the quality of molten steel. And has the characteristics of easy operability, high usability, high safety performance and the like. The mechanism work portion of hanging in this application can dismantle from hanging the mechanism residual portion to the pouring material layer of coating thoroughly stops the molten steel and directly with hanging the mechanism work portion or hang the remaining contact of mechanism, has reduced and has oozed steel, bleed-out risk, has increased factor of safety, has improved the resistant material life-span of carbon-free prefabricated section.

Drawings

FIG. 1 is a schematic view of a detachable hanging device for a bag bottom of the present invention;

FIG. 2 is a schematic top view of the bottom of the utility model;

FIG. 3 is a schematic view of the three-dimensional structure of the bottom of the utility model;

fig. 4 is a schematic view of the three-dimensional structure of the bottom of the utility model after the hanging device is disassembled.

The reference numbers in the figures denote: 1-eye bolt; 2-a hexagonal nut; 3-a flat washer; 4, pressing a plate; 5-steel ring; 6-PVC pipe; 7-rib plate; 8-plug; 9-brick holes of the water port seat; 10-ventilating seat brick holes; 11-a bottom impact zone; 12-bottom non-impact zone.

Detailed Description

Example 1

The package end of this embodiment is including hanging the mechanism residual and wrap the end body, hang the mechanism residual and for the package end installation reserve after target in place the part on the body of wrapping the end the casting material layer of coating on the upper surface of body of wrapping the end, the casting material layer covers completely hang the mechanism residual.

Before the bag bottom is hoisted in place, the bag bottom further comprises a hoisting mechanism working part, and the hoisting mechanism residual part and the hoisting mechanism working part form a hoisting device.

The ladle bottom body is an integrally formed ladle bottom prefabricated block. The ladle bottom precast block, the nozzle brick cup and the air brick cup are integrally formed.

The ladle bottom precast block comprises a ladle bottom impact area 11 and a ladle bottom non-impact area 12; the thickness of the ladle bottom impact area 11 is larger than that of the ladle bottom non-impact area 12; the hanging devices are uniformly arranged on the ladle bottom non-impact area 12 along the circumferential direction of the ladle bottom precast block.

In this embodiment, the hanging device comprises an eyebolt 1, a hexagon nut 2, a flat washer 3, a pressing plate 4, a steel ring 5, a PVC pipe 6, a rib plate 7 and a plug 8.

As shown in fig. 1, the screw end of the eye bolt 1 sequentially penetrates through one hexagon nut 2, the flat washer 3, the other hexagon nut 2, the pressing plate 4, the steel ring 5, the PVC pipe 6, the rib plate 7 and the plug 8 from top to bottom.

After the hoisting is in place, the lifting lugs of the lifting bolts 1 are sawed, the residual lifting bolts 1, the hexagon nuts 2, the flat washers 3, the pressing plates 4, the steel rings 5 are arranged on the PVC pipes 6, the rib plates 7 and the pipe plugs 8 jointly form the residual parts of the hoisting mechanism, the upper surface of the bottom covering body is coated with a casting material layer, the casting material layer completely covers the residual lifting bolts 1, the hexagon nuts 2, the flat washers 3 and the pressing plates 4 (the steel rings 5, the PVC pipes 6, the rib plates 7 and the pipe plugs 8 are all arranged inside the bottom covering body), and the lifting lugs of the lifting bolts 1 are sawed, so that a large bulge is formed after the casting material layer is coated, and the containing amount of molten steel is reduced. And because molten steel erodes etc. reason, with the increase of live time, increased the naked risk of suspension mechanism residual portion, suspension mechanism residual portion meets the molten steel and melts, can cause the risk of oozing steel, steel leakage. In addition, the residual part of the hanging mechanism is melted into molten steel, and the quality of the molten steel is also reduced. The service life of the ladle bottom of the embodiment is 85-90 furnaces.

Example 2

The package end still includes the mechanism work portion of hanging, hang the mechanism residual and hang the mechanism work portion and constitute the cable suspension device, in the package end of this embodiment, hang the mechanism residual with hang and can dismantle the connection between the mechanism work portion. The ladle bottom body is an integrally formed ladle bottom prefabricated block. The ladle bottom precast block, the nozzle brick cup and the air brick cup are integrally formed.

The hanging device comprises an eyebolt 1, a hexagon nut 2, a flat washer 3, a pressing plate 4, a steel ring 5, a PVC pipe 6, a rib plate 7 and a plug 8.

In this embodiment, the eyebolt 1 is composed of a lifting lug, an upper screw and a lower screw, the lifting lug is fixedly connected with the upper screw, the lifting lug, the upper screw, the upper hexagon nut 2 and the flat washer 3 form the working part of the hanging mechanism, and the lower hexagon nut 2, the lower screw, the pressing plate 4, the steel ring 5, the PVC pipe 6, the rib plate 7 and the plug 8 form the residual part of the hanging mechanism.

The upper screw rod sequentially penetrates through the upper hexagonal nut 2 and the flat washer 3 from top to bottom and is in threaded connection with the lower hexagonal nut 2; the top end of the lower screw rod is in threaded connection with the hexagonal nut 2 at the lower part, and the bottom end of the lower screw rod penetrates through the pressing plate 4, the steel ring 5, the PVC pipe 6, the rib plate 7 and the plug 8 downwards in sequence. The lower hexagonal nut 2 has a longer axial length than the upper hexagonal nut 2, so that the upper screw and the lower screw can be relatively and fixedly connected through the lower hexagonal nut 2. After the lifting lugs, the upper screw rods, the upper hexagon nuts 2 and the flat washers 3 are hoisted in place, a casting material layer is coated on the upper surface of the ladle bottom body, and the casting material layer completely covers the lower hexagon nuts 2, the lower screw rods and the pressing plates 4 (the steel rings 5, the PVC pipes 6, the rib plates 7 and the plug plugs 8 are positioned in the ladle bottom body), so that a smaller bulge is formed compared with the embodiment 1; with the increase of the service time, the coated casting material layer can be gradually thinned due to molten steel scouring, so that the danger that the hexagonal nut 2, the lower screw rod, the pressing plate 4 and the steel ring 5 at the lower part are corroded by the molten steel is increased, and the risks of steel infiltration and steel leakage are increased. The technical scheme of the embodiment can prolong the service life of the ladle bottom to 90-92 furnaces.

Example 3

As shown in fig. 1 to 4, the present embodiment is different from embodiment 2 in that the eye bolt 1 of the present embodiment is composed of a lifting lug and a screw. The working part of the hanging mechanism is the lifting eye bolt 1, the hexagon nut 2, the flat washer 3, the pressure plate 4, the steel ring 5 and the PVC pipe 6; the remaining part of the hanging mechanism is the rib plate 7 and the plug 8.

The screw end of the lifting bolt 1 sequentially penetrates through one hexagon nut 2, the flat washer 3, the other hexagon nut 2, the pressing plate 4, the steel ring 5, the PVC pipe 6, the rib plate 7 and the plug 8 from top to bottom, and the M-shaped external thread at the screw end of the lifting bolt 1 is in threaded connection with the M-shaped internal threads of the hexagon nut 2, the steel ring 5, the rib plate 7 and the plug 8; the lower surface of the rib plate 7 is welded with the upper surface of the pipe plug 8. The distance between the lower surface of the plug 8 and the lower surface of the ladle bottom non-impact area 12 is more than or equal to 40 mm.

Because the hanging mechanism residual part and the hanging mechanism working part are detachably connected, namely the lifting eye bolt 1, the hexagon nut 2, the flat washer 3, the pressing plate 4, the steel ring 5 and the PVC pipe 6 can be detached from the rib plate 7 and the plug 8 after the pouring is finished.

The lifting ring screw 1, the flat washer 3, the pressing plate 4, the steel ring 5 and the PVC pipe 6 are molded and then taken down, are installed when being dried and put in storage, and are taken down when being hoisted in place and before being added with molten steel, as shown in figure 4.

At the moment, deep holes are formed above the rib plates 7 and the pipe plugs 8 of the residual parts of the hanging mechanism, and thick pouring layers can be coated on the surfaces of the rib plates 7 and the pipe plugs 8 and can be leveled with the surface of the non-impact area 12 of the ladle bottom, so that large bulges or small bulges cannot be caused as in the embodiment 1 and the embodiment 2. Because the bolt is completely taken out, the coated castable layer cannot be thinned even if the service life is prolonged, so that the risk of molten steel corrosion is reduced, the risks of steel infiltration and steel leakage are reduced, and the service life is prolonged. The service life of the ladle bottom of the embodiment is 95-100 furnaces.

Example 4

On the basis of embodiment 3, the ladle bottom precast block, the nozzle brick cup and the air brick cup are not integrally formed, namely, the ladle bottom precast block is provided with a nozzle brick cup hole 9 and an air brick cup hole 10; ventilative seat brick hole 10 is the circular port, and is located 11 both sides of package end impact district in the package end non-impact district 12, water gap seat brick hole 9 is semi-circular hole, and is located the circumference edge in the package end non-impact district 12.

When the material of the nozzle pocket block and the gas pocket block is completely the same as that of other parts of the precast block, the nozzle pocket block and the gas pocket block can be integrally formed with the bottom-covered precast block, as in examples 1 to 3.

The nozzle pocket brick and the gas pocket brick are made of different materials respectively, and are different from the material of the precast block body part, and the nozzle pocket brick, the gas pocket brick and the precast block body made of different materials can be separated by an iron sheet during pouring by adopting a non-integrated forming mode. Can flexibly meet the requirements of different customers.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications are possible which remain within the scope of the appended claims.

Claims

1. The utility model provides a package end, includes hangs mechanism's residual and package end body, hang the mechanism's residual and reserve after putting in place for the package end the part on the body of package end, its characterized in that the upper surface of package end body coats the castable layer, the castable layer covers completely hang the mechanism's residual.

2. The bottom of the bag of claim 1, further comprising a hanging mechanism working part, wherein the hanging mechanism residual part and the hanging mechanism working part constitute a hanging device, and the hanging mechanism residual part and the hanging mechanism working part are fixedly connected or detachably connected.

3. The bottom of claim 2, wherein the hanging mechanism remnant and the hanging mechanism working portion are detachably connected by screw-fitting.

4. The ladle bottom according to claim 3, wherein the hanging device comprises an eyebolt (1), a hexagon nut (2), a flat washer (3), a pressing plate (4), a steel ring (5), a PVC pipe (6), a rib plate (7) and a plug (8);

the lifting eye bolt (1), the hexagon nut (2), the flat washer (3), the pressing plate (4), the steel ring (5) and the PVC pipe (6) form a working part of the hanging mechanism, and the rib plate (7) and the plug (8) form a residual part of the hanging mechanism; or the lifting eye bolt (1), the hexagon nut (2) and the flat washer (3) form the working part of the hanging mechanism, and the pressing plate (4), the steel ring (5), the PVC pipe (6), the rib plate (7) and the plug (8) form the residual part of the hanging mechanism;

the screw end of the lifting bolt (1) sequentially penetrates through one hexagon nut (2), the flat washer (3), the other hexagon nut (2), the pressing plate (4), the steel ring (5), the PVC pipe (6), the rib plate (7) and the plug (8) from top to bottom, and M-shaped external threads of the screw end of the lifting bolt (1) are in threaded connection with M-shaped internal threads of the hexagon nut (2), the steel ring (5), the rib plate (7) and the plug (8) respectively; the lower surface of the rib plate (7) is welded with the upper surface of the pipe plug (8).

5. The bottom of any one of claims 1-4, wherein the bottom body is an integrally formed bottom precast block.

6. The bottom of claim 5, wherein the bottom block is integrally formed with the nozzle block and the gas block.

7. The bottom of the ladle of claim 4, wherein the bottom body is an integrally formed bottom prefabricated block, and the bottom prefabricated block comprises a bottom impact area (11) and a bottom non-impact area (12); the thickness of the ladle bottom impact area (11) is larger than that of the ladle bottom non-impact area (12); the hanging devices are uniformly arranged on the ladle bottom non-impact area (12) along the circumferential direction of the ladle bottom precast block.

8. A sole according to claim 7, wherein the distance between the lower surface of the plug (8) and the lower surface of the non-impact zone (12) of the sole is greater than or equal to 40 mm.

9. The ladle bottom according to claim 7, wherein the ladle bottom precast block is provided with a water port brick hole (9) and an air vent brick hole (10); ventilative seat brick hole (10) are the circular port, and are located package end impact district (11) both sides in package end non-impact district (12), water gap seat brick hole (9) are semi-circular hole, and are located the circumference edge in package end non-impact district (12).

10. The ladle bottom according to claim 4, wherein the lifting eye bolt (1) consists of a lifting lug, an upper screw and a lower screw, the lifting lug is fixedly connected with the upper screw, the lifting lug, the upper screw, the upper hexagon nut (2) and the flat washer (3) form the working part of the hanging mechanism, and the lower hexagon nut (2), the lower screw, the pressing plate (4), the steel ring (5), the PVC pipe (6), the rib plate (7) and the plug (8) form the residual part of the hanging mechanism; the upper screw rod sequentially penetrates through the upper hexagonal nut (2) and the flat washer (3) from top to bottom and is in threaded connection with the lower hexagonal nut (2); the top end of the lower screw rod is in threaded connection with the hexagonal nut (2) at the lower part, and the bottom end of the lower screw rod sequentially penetrates through the pressing plate (4), the steel ring (5), the PVC pipe (6), the rib plate (7) and the plug (8) downwards.