JPS6024500Y2 - Steelmaking coolant production equipment - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an apparatus for producing a steelmaking coolant used when it is necessary to lower and adjust the temperature of a steel bath during processing of molten steel.

During steel manufacturing work using a converter, during degassing refining of molten steel, or during agglomeration such as continuous casting of molten steel, the temperature of molten steel is often adjusted to a temperature suitable for the processing.

At this time, ore grains, steel pieces, etc. are generally known as the temperature drop adjustment material used.

However, in recent years, thick steel plate end pieces or strips of steel obtained by cutting test specimen collection residue have been used as temperature drop adjustment materials, that is, cooling materials. As the amount of materials used increases, the development of efficient mass production equipment has become desirable.

However, in the past, such steel bath coolants have been provided by forming plate-shaped scrap materials into strips by longitudinally and laterally cutting them.

Such known coolant production apparatuses are extremely inefficient and it is extremely difficult to produce coolant at low cost.

The present invention has been made for the purpose of providing manufacturing equipment for steel slabs for cooling steel baths, which enables the production of a large amount of coolant in a fixed shape at low cost. In detail, reference numeral 1 denotes a material loading platform, on which sliding protrusions 2 are provided at appropriate intervals to form a loading surface.

Although this loading surface is not limited in the present invention, it is preferable for the work if it is inclined in the direction of take-out.

3 is the sliding protrusion 2 in contact with the inclined lower end side of the material loading table 1.
This is a transfer device installed in a direction crossing the .

The conveyance device 3 can be formed by using any roller, chain, belt, etc., as long as it does not depart from the purpose of the present invention.

Reference numeral 4 refers to rollers that force the conveyance surface, and are arranged in rows at appropriate intervals to form the conveyance surface.If the rollers 4 are installed with their roller axes tilted in the direction of conveyance, the material to be conveyed will be placed on one side of the conveyance surface. Since it is possible to transfer the material in a biased manner, it is possible to assist the action of the feed material biasing device described later.

Reference numerals 5 and 6 denote guide side plates provided on both sides of the transfer device 3, and one of them, for example, in the illustrated example, the guide side plate 5 is used as a transfer reference side plate.

Further, the roller 4 described above is partially or entirely connected to a suitable driving source (not shown).

These rollers 4 and guide side plates 5 and 6 are provided on a machine frame 7.

A feeding material biasing device 8 is provided at the rear end of the transfer device 3, and the material is moved toward the side of the transfer reference side plate 5 in order to regulate the material loading position to the shearing machine connected to the rear end of the transfer device 3. Apply constant pressure to the

FIG. 2 shows an example of the feeding material biasing device 8, in which 9 is a biasing bar, a pressure roller 9' is rotatably provided at the rear end, and the other end is a conveying surface opposite to the transfer reference side plate 5. Alternatively, it is rotatably attached to the guide side plate 6 or a horizontal frame suspended horizontally on the conveyance surface.

Reference numeral 10 denotes a weight attached to an actuating wire 10', one end of which is fastened to the intermediate portion of the biasing bar 9 below the conveying surface, and the other end of which is stretched toward the transfer reference side plate 5 via rollers.

Reference numeral 11 denotes a pullback wire 11' whose one end is tied to the biasing bar 9 on the opposite side of the actuating wire 10'.
The traction device 11 can be any actuating device such as a cylinder device, a winding device, or a rack mechanism.

The actuation type of the biasing bar 9 may be any spring type, cylinder type, rack type, etc. as in the above example, as long as it does not depart from the purpose of the present invention.

Reference numeral 12 denotes a shearing machine having serrated shearing blades 12', which consists of a fixed blade 12'' which has a large number of hemlock-shaped shearing blades arranged in series to form a wavy tooth row, and a movable blade 12'', which has a wavy tooth row. The shearing machine 12 is installed so that the transfer reference side plate 5 intersects the material transfer direction of the transfer device 3 at an angle, and the transfer reference side plate 5 coincides with the connecting point or the outermost end of the hemlock-shaped shear blade.

The conveying direction and the installation angle of the wave-shaped tooth row in the shearing machine 12 are arbitrarily selected depending on the shape of the sheared steel piece and the angle of the helical teeth, but when the bending angle of the shearing blade is at a right angle and a right-angled sheared steel piece is to be obtained. should be 45°, but in the case of a rhombus the intersection angle should be set accordingly.

Reference numeral 13 denotes a pressing device that holds the sheared material in the shearing position provided on the front side of the shearing machine 12, and includes an appropriate number of pressing heads 13.
' is provided.

Reference numeral 14 denotes a gutter-type defective product sorting device for sheared pieces connected to the shearing machine 12 via a conveyor 15.

The sorting device 14 separates the incompletely sheared continuous sheared fragments 16 shown in FIG. 5 and the completely sheared fragments 17 shown in FIG. In the sorting device, a source flow lower gutter section 18, a downstream lower flow gutter section 19, and an intermediate flow lower gutter section 20 each having an arcuate cross section are arranged in a stepped manner at intervals that form a sorting drop hole 21 for completely sheared pieces. It is formed.

In the present invention, the headwater downstream lower gutter section 18 and the downstream lower gutter section 19
The completely sheared pieces sorting and falling hole 21 formed between the intermediate flow lower gutter section 20 should be determined depending on the size of the sheared pieces 17 produced by shearing, and the completely sheared pieces 17 fall, but in two or more rows. The bead-shaped incompletely sheared pieces 16 should be of such a size that they cannot be dropped.

Furthermore, the upstream side downstream gutter and the downstream downstream gutter connected thereto with a gap that forms the drop hole 21 are defined by, for example, the gutter bottom axis B of the intermediate downstream gutter 20 from the gutter bottom axis A of the source side downstream gutter 18. are also offset in the same downstream direction by offset position a.

In the present invention, the amount of deviation a between the gutter bottom axes A and B of the upstream flow gutter and the downstream flow gutter, respectively, is determined by the inclination of the upstream flow gutter, that is, the flow rate of the sheared pieces. The greater the inclination, that is, the greater the flow velocity, the longer the length direction of the chain-shaped imperfectly sheared fragments 16 flowing down in the gutter coincides with the flow direction in the gutter, and the lower the flow velocity corresponds to the amount of inclination of the gutter. becomes.

In such a flowing situation, incompletely sheared products flowing down in the upstream flow down gutter reach the upper edge of the sorting drop hole 21, and as they flow down from this point, the front part of the flowed objects loses support from the bottom of the gutter, and the tip of the flow points downward. deflect.

The amount of deflection of this tip at a position away from the upper edge of the drop hole 21 changes depending on the flow rate, and the higher the flow rate, the more the falling object flies in the drop hole 21 part due to the flow penetration force. The amount of downward deflection of the tip does not become large in proportion to the distance from the upper edge of the drop hole 21.

As described above, the higher the flow rate of the material to be sorted, that is, the greater the inclination of the upstream flow gutter, the greater the inertia force of the falling material. Since the amount of downward deflection of the tip is small, it can easily reach the upper edge of the downstream gutter and will not fall.

Therefore, in such a case, the above deviation amount a can be made small.

On the other hand, when the falling velocity of the falling material in the upstream gutter is small,
That is, when the flowing inertia is small, as the center of gravity of the falling object that reaches the drop hole 21 moves to the drop hole 21, its tip will rapidly deviate downward and fall, so in such a case The above deviation amount a must be increased so that the tip of the falling object transfers to the upper edge of the gutter on the downstream side.

22 is a conveyor for discharging the completely sheared pieces 17, and 23 and 24 are storage areas for the respective sorted items.

The apparatus for producing a steelmaking coolant according to the present invention is as described above, but the sharp "burrs" or r
When there is a risk that the "corners" etc. may damage the conveyor belt etc. during handling such as transportation, a rotary chamfering device 25 is provided following the sorting device 14 for polishing and removing the "burrs" etc. of the sheared pieces. will be established.

The operation of the device of the present invention will be described below. Raw materials for steelmaking coolant are generally dismantled into irregularly shaped plates such as both sides, leading and trailing end plates, etc. that have been cut off during dimension refining of rolled steel plates, etc., or into other plate shapes. Shaped steel materials etc. are used.

These raw materials are placed on the material loading platform 1 with their lengths aligned using appropriate cargo handling equipment.

The material on the loading table 1 slides on the sliding protrusion 2 and is loaded onto the conveyance surface of the transfer device 3.

For example, when the conveying roller 4 is provided with its axial direction inclined toward the conveying direction, the raw material is conveyed with one side thereof in contact with the conveying reference side plate 5.

The raw material to be transferred is sheared by the feed material biasing device 8 provided in front of the shearing machine 12, and lateral pressure is always applied from the other side by a pressure roller 9' so that one side does not separate from the transfer reference side plate 5 side. It is loaded into the correct shear position within the machine 12.

This raw material is then held and sheared by a pressing head 13'.

The sheared pieces are sent by a conveyor 15 to a gutter type defective product sorting device 14.

In this downflow gutter type defective product sorting device 14, the source flowdown gutter 18 and the intermediate flowdown gutter 20 are spaced apart from each other to form a sorting and falling hole for completely sheared pieces, and the upper end of the gutter bottom of the intermediate flowdown gutter 20 The fully sheared piece 17 from the shearing machine 12 is connected to the gutter bottom axis line with an offset amount a from the gutter bottom lower end edge of the headwater drain gutter 18 provided on the upstream side.
The material to be sorted flowing down with a mixture of bead-shaped defective sheared fragments 16 is caused by the flow gutter having an arc-shaped cross section, and the relatively long bead-shaped defective sheared fragments 16 are made to have their lengths aligned with the flow direction. The water flows down the bottom of the gutter.

When these falling objects reach the upper edge of the sorting hole 21 and lose support from the bottom of the gutter, the tip of the falling objects shifts downward depending on the size and velocity of the falling objects as the center of gravity of each sheared piece moves. However, the short completely sheared piece 17 reaches the downstream gutter and falls, but the incompletely sheared piece 16 has a small downward deflection, flies through the drop hole, reaches the upper edge of the downstream gutter, and becomes the completely sheared piece 17. are automatically selected.

Furthermore, even if there is a downward "burr" at the tip of the external bead-shaped defective sheared piece due to shearing, as mentioned above, due to the small head of the interpolation, it will not get caught on the upper edge of the downstream gutter and will smoothly move over the downstream bridge. It is sorted downstream.

Drop hole 2 provided in the defective product sorting gutter in the present invention
1, as in this embodiment, it is not necessary to provide two or more screening holes 21, but if good products are superimposed on a defective shear height and flow down due to the flow state of the shear amount, two or more screening drop holes 21 may be provided. is preferred.

Since the device of the present invention is as described above, the shearing machine having A-shaped shearing blades is installed so that the material supply direction intersects, and furthermore, the material feeding position is regulated to one side. can be manufactured reliably and efficiently from irregularly shaped plate materials.

Conventionally, there was a device that sheared small pieces from feed material with a constant width using an inclined shearing device, but it was difficult to apply to feed material with an indeterminate width, and the defect was that small pieces were easily connected in a chain and sheared out. .

In addition, there is a known opening/closing damper in which the cut board and chips are conveyed separately during board cutting, and the two are sorted manually. It is difficult to visually select such materials, and it is difficult to apply them to the production of coolant for steelmaking.

In this invention, for the first time, board materials with an indeterminate width are continuously sheared, and if there is a continuous sheared amount, it is automatically sorted as it flows down by a gutter-type sorting device connected to the sheared piece discharge side. This made it possible to mass-produce coolant for steelmaking.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a steelmaking coolant manufacturing apparatus of the present invention, FIG. 2 is a plan view showing an example of a feeding material shifting device, and FIG.
Figure A is a side view of the down-flow gutter type defective product sorting device, the opening view is a vertical cross-sectional view taken along the Rollo line in Figure A, Figure 4 is a plan view showing the state of shearing of the coolant from the raw material steel plate, and Figure 5 is a beaded shape. FIG. 6 is a diagram showing an incompletely sheared section, FIG. 6 is a fully sheared section, and FIG. 7 is a side view of the shearing machine. 1... Material loading platform, 3... Transfer device,
8... Feeding material shifting device, 12... Shearing machine, 13... Material pressing device, 14...
・Flowing gutter type defective product sorting device, 25...Rotary chamfering device for sheared pieces.

Claims (1)

[Scope of utility model registration request] A material transfer device having a transfer reference side plate at the rear end, a feed material biasing device that elastically biases the feed material toward the transfer reference side plate with a constant pressing force, and a large number of A-shaped shear blades in series. A shearing machine having a row of wave-shaped shearing blades is arranged in a row so that the direction of the feeding reference side plate coincides with the direction of the feeding reference side plate side edge of the hemi-shaped shearing blade, and a shearing machine subsequent to the shearing machine is two or more stages of inclined flow gutter having an arcuate cross section at intervals determined by the dimensions of the sheared pieces, and deviating the axes so that the flow bottom axis of the downstream gutter is below the flow bottom axis of the upstream gutter. Therefore, a downstream gutter-type defective product sorting device is installed in which the upper edge of the gutter bottom of the downstream gutter is deviated downward from the downstream edge of the gutter bottom of the upstream gutter, and the sheared pieces from the shearing machine are flowed down. An apparatus for producing a coolant for steelmaking, characterized in that the completely sheared pieces are taken out from the falling holes at the above-mentioned intervals, and the incompletely sheared pieces are removed from the lower end of the downstream gutter.