JP2984202B2 - Melting furnace equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a melting furnace apparatus for continuously feeding preheated material to a melting furnace from preheating of the material to be melted.

[0002]

2. Description of the Related Art Heretofore, a preheated material to be melted has been introduced into a melting furnace which is tilted to a vertical shape from an upper position with respect to the melting furnace.

[0003]

However, when the material to be melted is put into the melting furnace, a lid must be set in advance at the burner port of the melting furnace. Also,
During this loading operation, high noise (over 100 dB) was generated and the furnace material of the melting furnace was subjected to a large impact, so that the furnace material was easily worn out.

Accordingly, the present invention solves the above-mentioned drawbacks, and can continuously feed a preheated material to be melted from a low position to a melting furnace which remains horizontal without covering a burner port. It is an object to provide a melting furnace device.

[0005]

A melting furnace apparatus according to the present invention comprises: a melting furnace provided rotatably about a substantially horizontal axis;
A material feeding unit having a material feeding unit for feeding the material to be melted into the melting furnace and a material dropping unit for dropping the material into the feeding unit; and With moving means to move forward and backward,
A linear vibration feeder is attached to the feed unit for applying a vibration to the feed unit and horizontally feeding the material into the melting furnace in a state where the feed unit is inserted into an opening opened in a substantially horizontal direction of the melting furnace. From the melting furnace below.
The material preheating section that preheats the material to be melted with the exhaust gas
It is arranged above the material dropping section and the material
Exhaust gas duct for guiding exhaust gas from melting furnace to preheating section
Feed the material to the above opening of the melting furnace.
A lateral moving means to be made to correspond to the insertion portion alternately is provided .

[0006] Further, it has a melting furnace rotatably provided about a substantially horizontal axis, a material feeding section for feeding the material to be melted into the melting furnace, and a material dropping section for dropping the material into the feeding section. A material supply device main body, and the feeding section has an auxiliary chute that can extend in a horizontal direction with respect to the melting furnace, and the auxiliary chute is inserted into an opening that is opened in a substantially horizontal direction of the melting furnace. state the Te at the linear vibration feeder for horizontal feed the material into the melting furnace in the auxiliary chute which this vibration is transmitted to vibrate to the infeed and attached to the infeed, further
Next, the material to be melted is exhausted by the exhaust gas guided from the melting furnace below.
Place the material preheating section to be preheated above the material drop section.
And exhaust gas from the melting furnace to the material preheating section.
The lower inlet of the exhaust gas duct for guiding
Correspond to the opening alternately with the material feeding section
A lateral moving means is provided .

[0007]

1 and 3 show an embodiment of a melting furnace apparatus according to the present invention, which comprises a melting furnace 1 rotatably provided around a horizontal axis L, There is provided a material supply device main body 4 having a material feeding section 2 for feeding the materials R to be melted and a material dropping section 3 for dropping the materials R on the feeding section 2.

Further, this apparatus has moving means Z for moving the material supply device main body 4 forward and backward with respect to the melting furnace 1. Specifically, in the illustrated example, a plurality of wheels 5 are provided on the lower surface of the apparatus main body 4 and a reciprocating actuator 26 such as a fluid cylinder is provided. Note that an (electric) motor for rotating and driving the wheels 5 is used (instead of the actuator 26).
It is also preferable to use.

Then, in a state where the feeding portion 2 is inserted into the opening 6 opened in the horizontal direction of the melting furnace 1, vibration is applied to the feeding portion 2 to horizontally feed the materials R into the melting furnace 1. A vibration feeder 7 is attached to the outside of the feeding section 2.

Therefore, when the preheated materials R are fed into the melting furnace 1, it is not necessary to set a lid on the burner port of the melting furnace 1 in advance. In addition, since it is fed from the horizontal direction while keeping it at a low position, the noise value can be reduced during this feeding (for example, from 100 dB to 85 dB), and the impact of the materials R on the furnace material of the melting furnace 1 is suppressed. be able to. Further, the next preheated material R can be continuously fed even while the molten metal remains in the furnace of the melting furnace 1. Exhaust gas from the lower melting furnace 1 is guided to a position above the material dropping section 3, and the exhaust gas is used as a material preheating section 9 for preheating the materials R. Specifically, the exhaust gas is guided to the preheating unit 9 in an exhaust gas duct 10 as shown in FIG.

(Returning to FIG. 1) At a position below the preheating unit 9, there is provided an openable / closable mechanism 11 (a link mechanism in the illustrated example). That is, in the covered state, as shown in FIG.
Can be stored in the preheating section 9, while the material R can be dropped on the drop section 3 in the open state as shown in FIG.

However, the inside of the preheating section 9 is lined with a refractory material such as a refractory insulating brick, and furthermore, a punching metal.
12 has a double structure. For this reason, the preheating unit 9
The inner material R is led by the duct 10 and is punched metal.
As shown in FIG. 9, the exhaust gas passing through the twelve holes is uniformly preheated from the four surrounding surfaces. In this way, the thermal efficiency is compared to that of a conventional melting furnace without a material preheating device (45
% → 55%). Since the materials R are preheated, the melting time of the materials R in the melting furnace 1 can be reduced (to 2/3 of the conventional melting time).

An opening 13 is provided on the upper surface of the preheating section 9 for charging the materials R and discharging the exhaust gas. At a position corresponding to the opening 13 of the preheating section 9, there is provided an exhaust gas suction hood 20 for sucking unnecessary (low temperature) exhaust gas by preheating the materials R.

A lower inlet 14 of the exhaust gas duct 10 (see FIG. 2) is made to correspond to the opening 6 of the melting furnace 1 alternately with the feeder 2 at a position below the apparatus main body 4.
It has a lateral moving means 15 (in the illustrated example, a truck and a reciprocating actuator (not shown) or an (electric) motor). That is, the apparatus main body 4 is moved in the lateral direction by the lateral moving means 15.
By reciprocating (in the direction of arrow A), exhaust gas
The lower inlet 14 of the duct 10 and the feeding part 2 are connected to the melting furnace 1
The openings 6 are made to correspond alternately.

As shown in FIG. 2, a driving unit 16, a material bucket 17 for charging the material R into the opening 13 of the preheating unit 9, and a bucket 17 are provided near the material supply device main body 4. A material inputting section comprising a rail 19 leading to the opening 13
18 are placed. Furthermore, the melting furnace 1 stands up when discharging a filter (not shown) or the like (the melting furnace 1 swings around the support shaft 29 due to the extension of the swing drive member 27 shown in FIG. In this case, a dust collecting hood 23 is provided near the position corresponding to the opening 6 of the melting furnace 1.

Next, the feeding operation of the preheated materials R will be described. First, as shown in FIG.
The material R is charged into the preheating unit 9 at the charging unit 18 while the lower inlet 14 of the 10 corresponds to the opening 6 of the melting furnace 1. Specifically, the material R is put into the bucket 17, the driving unit 16 is driven, and the bucket 17 is pushed up by the rail 19. When the bucket 17 reaches the position above the charging section 18, the tip of the bucket 17 is inverted, and the tip of the bucket 17 is
The swingable lid 21 (provided on the side of the charging section 18) is pushed open (inward of the exhaust gas suction hood 20), and the materials R are charged into the preheating section 9.

When the materials R are put into the preheating section 9, the exhaust gas from the melting furnace 1 passes through the exhaust gas duct 10. As a result, the materials R are preheated by the exhaust gas. After that, the low temperature exhaust gas passes through the opening 13 and the exhaust gas suction hood
Sucked in 20.

Next, by moving the feeding section 2 with the opening 6 of the melting furnace 1 by moving it in the direction of arrow A by means of the lateral moving means 15 (in the illustrated example, a cart or the like), FIG. It is in the state as shown in.

When the opening / closing mechanism 11 is opened in the direction of arrow B, the preheated materials R fall down the drop section 3 and accumulate in the feeding section 2 to move the apparatus body 4 in the direction of arrow C. The feeding unit 2 is moved to the melting furnace 1 by means and inserted into the opening 6 of the melting furnace 1 (see FIG. 4). In this inserted state, while rotating the melting furnace 1 as shown by the arrow M,
The feeders 2 are vibrated by the feeder 7 to horizontally feed the preheated materials R into the melting furnace 1. By the way, FIG.
As shown by a virtual line (two-dot chain line) in FIG. 4, the axis L of the melting furnace 1 is inclined by a predetermined inclination angle θ with respect to the horizontal, and is held so that the opening 6 side faces slightly upward. It is convenient that the material R charged near the opening 6 of the furnace 1 is smoothly fed into the inner part (left direction in the figure). The inclination angle θ is preferably 1 ° ≦ θ ≦ 15 °.
° ≦ θ ≦ 9 ° is desirable. If the inclination angle θ is less than the lower limit, the material is not smoothly fed into the melting furnace 1 (in the depth direction). If the inclination angle θ exceeds the upper limit, it is difficult to insert the material feeding part 2. This is because there is a possibility that the molten metal may be leaked to the discharge port side (burner port) (on the left side in the figure) and continuous charging becomes difficult.

As shown in FIG. 3, the melting furnace 1 is rotatably held around an axis L by a holding frame 30, and a support shaft 29 of the holding frame 30 is attached to a fixed support 31. , So that the angle θ can be increased or decreased. The swing drive member 27 is for tilting the melting furnace 1 around (the axis of) the support shaft 29 by its expansion and contraction, and is vertically (standing) from a horizontal state.
Tilt to state can be performed.

As described above, the materials R can be smoothly fed into the melting furnace 1 while being kept substantially horizontal. If the materials R ... can be completely fed into the melting furnace 1,
The above operation is repeated again to continuously perform dissolution.

As another embodiment of the present invention, as shown in FIG. 5, a moving means for moving the apparatus body 4 forward and backward with respect to the melting furnace 1 is omitted. An extendable auxiliary chute 22 is provided.

In the feeding operation of the preheated materials R, first, the materials R are charged into the preheating section 9 as described above (see FIG. 6). Next, as shown in FIG.
15 (in the example shown in the drawing), the feed unit 2 is moved in the direction of arrow A by a bogie or the like so that the feeding unit 2 corresponds to the opening 6 of the melting furnace 1, and the state shown in FIG.

Then, as described above, the preheated materials R ...
Are accumulated in the feeding section 2 and are arranged in the direction of arrow D (not shown).
Is inserted into the opening 6 of the melting furnace 1 on the same axis as the horizontal axis L (see FIG. 8). In this inserted state, vibration is applied to the feeding section 2 by the feeder 7 and the preheated materials R are horizontally fed into the melting furnace 1 by the chute 22 to which the vibration has been transmitted.

As shown by phantom lines (two-dot chain lines) in FIGS.
It is preferable to feed the material R (horizontal feed) while rotating M around a substantially horizontal axis L inclined at an inclination angle θ of ≦ 15 °. In particular, setting 4 ° ≦ θ ≦ 9 ° is excellent in that the material R can be efficiently, smoothly and reliably fed into the melting furnace 1 (with the other burner port not covered). I have.

In the present invention, a substantially horizontal axis and a substantially horizontal direction mean 0 ° to 15 ° unless otherwise specified .

[0027]

According to the present invention, the following significant effects can be obtained by the above-described structure.

According to the first or second aspect, the preheated materials R are supplied to the melting furnace 1 in an opening 6 which is opened in a substantially horizontal direction.
Can be fed horizontally on substantially the same axis as the substantially horizontal axis L (of the melting furnace 1), so that no noise is generated and the furnace material of the melting furnace 1 is not worn out for a long time. This melting furnace 1 can be used for a long time. Also,
When the materials R are fed into the melting furnace 1, it is not necessary to cover the burner port. Then, the next new material R can be continuously fed into the melting furnace 1 while the melted material R (molten metal) remains in the melting furnace 1.

In the preheating section 9 (from the melting furnace 1)
Since the materials R are preheated by the exhaust gas, the heat efficiency can be improved and the melting time of the materials R in the melting furnace 1 can be shortened. Further, by preheating the materials R, it is possible to improve the yield of auxiliary materials such as coke. Further, the material R...
From the heat, feed of the preheated materials R to the melting furnace 1
Work can be performed efficiently.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a side view thereof.

FIG. 3 is a simplified diagram showing a use state.

FIG. 4 is a simplified diagram showing a use state.

FIG. 5 is a front view showing another embodiment of the present invention.

FIG. 6 is a side view thereof.

FIG. 7 is a simplified diagram showing a use state.

FIG. 8 is a simplified diagram showing a use state.

FIG. 9 is a simplified diagram showing a preheated state of a material .

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Melting furnace 2 Material sending part 3 Material dropping part 4 Material supply device main body 6 Opening part 7 Straight vibration feeder 9 Material preheating part 10 Exhaust gas duct 14 Lower introduction port 15 Lateral moving means 22 Auxiliary chute L Horizontal axis R Material to be melted Z moving hand stage

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) F27D 13/00 F27B 3/00-3/28 F27B 7/00-7/42

Claims (2)

(57) [Claims] 1. A melting furnace 1 rotatably provided around a substantially horizontal axis L, a material feeding section 2 for feeding a material R to be melted into the melting furnace 1, and the material R ... Feeder body 4 having a material dropping section 3 for dropping
And a moving means Z for moving the material supply device main body 4 forward and backward with respect to the melting furnace 1, and the feeding section 2 is inserted into the opening 6 opened in the substantially horizontal direction of the melting furnace 1. In this state, a linear vibration feeder 7 for applying a vibration to the feeding section 2 to horizontally feed the materials R into the melting furnace 1 is attached to the feeding section 2, and further a lower melting is performed.
Preheat the materials R to be melted with the exhaust gas led from the furnace 1.
The material preheating section 9 is disposed above the material drop section 3.
And the exhaust gas from the melting furnace 1 to the material preheating section 9.
The lower inlet 14 of the exhaust gas duct 10 for guiding
Alternately with the material feeding section 2 with respect to the opening 6 of
A melting furnace device provided with a corresponding lateral moving means 15 . 2. A melting furnace 1 rotatably provided around a substantially horizontal axis L, a material feeding section 2 for feeding the materials R to be melted into the melting furnace 1, and the material R ... Feeder body 4 having a material dropping section 3 for dropping
The feeding section 2 has an auxiliary chute 22 that can extend from the melting furnace 1 in a horizontal direction, and the auxiliary chute 22 is inserted into an opening 6 that is opened in a substantially horizontal direction of the melting furnace 1. In the inserted state, the feeding portion 2 is vibrated and the vibration is transmitted to the auxiliary chute 22.
The linear vibration feeder 7 for the material R ... a horizontal feed into the melting furnace 1 is attached to the infeed 2 in, further
In the exhaust gas guided from the lower melting furnace 1,
The material preheating section 9 for preheating R...
To the material preheating section 9 and the melting furnace 1
Inlet of exhaust gas duct 10 for guiding exhaust gas from
14 is fed into the opening 6 of the melting furnace 1
A melting furnace device , wherein a lateral moving means 15 is provided alternately with the part 2 .