Air curtain device for blocking flue gas at anode scrap charging hole of PS (polystyrene) converter

Abstract

The utility model discloses an air curtain device for blocking flue gas of a PS converter anode scrap feeding port, which is provided with an air chamber, rotary supporting mechanisms are arranged at the upper end and the lower end of the air chamber, an air inlet is arranged on the rear side portion of the air chamber, a metal hose is connected onto the air inlet, and the air inlet is connected with an external high-pressure air source through the metal hose. The front side part of the air chamber is provided with a necking section which is gradually reduced, the front side end of the necking section is provided with an air outlet, and the air outlet is in a rectangular blade point shape; according to the utility model, the air chamber is connected with the blade-shaped air outlet through the closing-in section, so that the diameter of high-pressure air from entering to blowing out is gradually reduced, the blowing pressure is larger and larger, the air force is stronger and stronger, smoke to be overflowed can be better stopped, and the effect is better; the whole air chamber is connected with the transmission gear through the rotating gear and connected with the external driving motor, the driving motor is a servo motor, the whole air chamber can be driven to rotate within the range of + / -45 degrees, and smoke is blocked by the air curtain without dead angles.

Description

TECHNICAL FIELD

[0001] The utility model relates to PS converter residual electrode adding port flue gas treatment equipment technical field, especially a kind of PS converter residual electrode feeding port flue gas blocking air curtain device. BACKGROUND

[0002] PS converter blows and smelts copper, and in copper-making period, heat is often in surplus, cold copper is added into furnace, and surplus heat is used to melt cold copper to improve crude copper output.The traditional cold copper adding mode needs to stop the blast of converter, turns out to add cold copper, and then turns in to open blast and smelting.The furnace platform is frequently turned out, and smelting time is increased, and after technical development, nowadays, copper smelting enterprise uses residual electrode feeding machine to add residual electrode (a kind of cold copper).Residual electrode feeding machine uses track to take baled residual electrode to the inclined chute in the upper side of furnace mouth, lifts residual electrode gate, uses push rod to push residual electrode into furnace, push rod is retracted, gate falls, and the cycle is repeated until the required residual electrode quantity is added.Currently, in general smelting plant, about 45 tons of cold copper need to be added for each smelting of PS converter, and the time of adding using residual electrode feeding machine is about 50 minutes.Its advantage is to realize the addition in the process of cold copper blowing and smelting, without stopping the blast, and greatly improving production efficiency.The disadvantage is that when flue negative pressure is insufficient, during the time of opening residual electrode gate to add cold copper, a large amount of high-concentration SO2 flue gas generated by furnace blowing and smelting will overflow from the gate to the plant house, resulting in poor environment in the plant house, affecting the vision of crane operator, and being harmful to the health of employees.Based on the fact that there is no good collection method for PS converter residual electrode adding port flue gas, it is very meaningful to make a new type of air curtain device with simple structure and convenient operation to block flue gas. SUMMARY

[0003] The utility model discloses a kind of air curtain devices for blocking flue gas of PS converter residual electrode feeding port, which solves the problem of flue gas overflow of PS converter residual electrode feeding port.

[0004] The specific scheme of the utility model is as follows: an air curtain device for blocking flue gas of PS converter residual electrode feeding port has an air chamber, rotating support mechanisms are arranged at the upper and lower ends of the air chamber, an air inlet is arranged at the rear side of the air chamber, a metal hose is connected to the air inlet, a high-pressure gas source is connected to the metal hose, a gradually narrowing closing section is arranged at the front side of the air chamber, and an air outlet is arranged at the front end of the closing section.

[0005] Further, the closing section comprises a first straight section, a first inclined section, a second straight section and a second inclined section in sequence, the four sections are integrally connected to form a cavity with internal ventilation, the second inclined section is connected to the front side of the air chamber, and the air outlet is arranged on the front end face of the first straight section.

[0006] Further, the first straight section and the first inclined section are provided with a rounded corner, the second straight section and the second inclined section are provided with a rounded corner, the first inclined section and the second straight section are provided with a rounded corner, and the second inclined section and the air chamber are provided with a rounded corner.

[0007] Further, the air outlet is a rectangular blade type, with a size of 5mm in width and 1200mm in height.

[0008] Further, the air chamber is vertically installed, and is a square steel structure cavity with a length of 0.1m, a width of 0.05m and a height of 1.2m. The air chamber rotates around the rotary support mechanism as a center to adjust an angle of ±45°.

[0009] Further, the rotary support mechanism comprises an upper support rod located at the top of the air chamber and a lower support rod located at the bottom of the air chamber. The lower support rod is provided with a rotating gear, and the rotating gear is connected with an external driving motor through a transmission gear, so as to realize the rotary motion of the air chamber.

[0010] Further, the air inlet comprises two DN50 size air inlets, and the two air inlets are arranged in an up-down separation mode. Each air inlet is connected with a metal hose and a high-pressure air source.

[0011] The utility model has the advantages of simple structure, convenient operation, good solution to the problem of smoke overflow during the addition of cold copper in the PS converter, realization of green and environment-friendly production, and suitability for popularization and application in the smelting industry.

[0012] 1. The utility model discloses a simple structure, convenient operation can better solve the problem of smoke overflow when adding cold copper in the PS converter at present, realize green and environment-friendly production, and be applicable to the smelting industry popularization and application.

[0013] 2. The utility model discloses that the air chamber and the blade type air outlet are connected by a closing section, so that the high-pressure air enters and blows out, the diameter gradually reduces, the blowing pressure becomes larger and larger, the wind power becomes stronger and stronger, can better prevent the smoke ready to overflow, and the effect is better.

[0014] 3. The utility model discloses that the whole air chamber is connected with the transmission gear through the rotating gear and is connected with the external driving motor, the driving motor adopts the servo motor, can drive the whole air chamber to realize the rotation in the range of ±45°, realizes the smoke curtain to block the dead angle. DETAILED DESCRIPTION

[0015] Fig. 1 It is the front view direction structure schematic diagram of the utility model;

[0016] Fig. 2 It is the plan view direction structure schematic diagram of the utility model;

[0017] Fig. 3 is a side view direction structure schematic diagram of the utility model.

[0018] In the figure: 1 - upper support rod, 2 - closeout section, 3 - air chamber, 4 - air inlet, 5 - lower support rod, 6 - rotating gear, 7 - first straight section, 8 - first inclined section, 9 - second straight section, 10 - second inclined section, 11 - rounded corner, 12 - air outlet. DETAILED DESCRIPTION

[0019] The technical scheme of the utility model will be described clearly and completely below in combination with the drawings of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative efforts belong to the protection scope of the utility model. In the description of the utility model, it needs to be explained that the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings or the orientation or position relationship of the utility model product when it is usually placed, which is only for the convenience of describing the utility model or simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, be constructed or operated in a specific orientation, and therefore cannot be understood as limiting the utility model.

[0020] In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "arrange", "mount", "connect" should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or integrally connected, can be mechanically connected, or can be electrically connected, can be directly connected, or indirectly connected through an intermediate medium, or can be the communication inside two elements. For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0021] Referring to Figs. 1-3 , the utility model is a kind of PS converter residual electrode feeding port flue gas barrier gas curtain device, with air chamber 3, the upper and lower ends of the air chamber are provided with rotating support mechanism, the rear side of air chamber is provided with air inlet 4, metal hose is connected on air inlet, high-pressure gas source (schematic diagram is not shown in the drawing) is connected by metal hose, further, the number of air inlet in the utility model is 2 air inlets of DN50 size, two air inlets are arranged and set apart up and down, metal hose is connected on each air inlet and connected with high-pressure gas source;The front side of closeout section 2 is provided with air outlet 12 on the front side end of closeout section, the air outlet is rectangular blade type, further, the air outlet in the utility model is rectangular blade type, the size is 5mm wide, 1200mm high.

[0022] Further, the closing section sequentially comprises a first straight section 7, a first inclined section 8, a second straight section 9 and a second inclined section 10, the diameters of the above four sections are sequentially increased and expanded to be integrated to form an internal ventilation cavity, wherein the second inclined section is connected with the front side of the air chamber, and the air outlet is arranged on the front end surface of the first straight section.

[0023] Further, the connecting part between the first straight section and the first inclined section is provided with a rounded corner 11, the connecting part between the second straight section and the second inclined section is provided with a rounded corner, the connecting part between the first inclined section and the second straight section is provided with a rounded corner, and the connecting part between the second inclined section and the air chamber is provided with a rounded corner.

[0024] Further, the air chamber is vertically installed, and is a square steel structure cavity with a length of 0.1 m, a width of 0.05 m and a height of 1.2 m; and the air chamber is rotated around the rotary supporting mechanism to adjust the angle to ±45°.

[0025] Further, the rotary supporting mechanism comprises an upper supporting rod located at the top of the air chamber and a lower supporting rod located at the bottom of the air chamber, the lower supporting rod is provided with a rotating gear 6, and the rotating gear is connected with an external driving motor through a transmission gear (not shown in the schematic diagram) to realize the rotary motion of the air chamber.

[0026] In the technical scheme, the metal hose connected with the high-pressure air source pipe provides high-pressure air to the air chamber, the air is sprayed to the residual electrode adding port through the knife-edge air outlet, and the air curtain is formed, so that the smoke overflow at the residual electrode adding port can be effectively avoided, and the temperature of the residual electrode port is reduced.

[0027] In addition, the driving motor drives the rotating gear to rotate, the rotating gear drives the upper and lower supporting rods to rotate, the rotating air chamber can change the direction of the air curtain, the driving is stopped after the angle is adjusted, the rotating gear is stopped, and the air outlet sprays air according to the fixed air spraying direction.

[0028] The utility model discloses simple structure, convenient operation, and better solve the problem of smoke overflow at the residual electrode port of PS converter when adding cold copper, realize green environmental protection production.

[0029] The utility model discloses simple structure, convenient operation, and better solve the problem of smoke overflow at the residual electrode port of PS converter when adding cold copper, realize green environmental protection production.

[0030] The utility model discloses a gas chamber and the air outlet of sword type adopt the connection of the closing section between them, and high pressure wind is from entering to blowing, and diameter gradually reduces, and blowing pressure will be more and more big, and wind force is more and more strong, can better prevent the smoke that prepares to overflow, and the effect is better.

[0031] The whole gas chamber is connected with the transmission gear through the rotating gear, and is connected with the driving motor of external device, the driving motor adopts servo motor, can drive the whole gas chamber to realize the rotation in the range of ±45 DEG, realizes the gas screen to block the smoke without dead angle.

Claims

1. An air curtain device for blocking smoke at the butt anode charging port of a PS converter, characterized by: It has an air chamber, and a rotating support mechanism is provided at the upper and lower ends of the air chamber. An air inlet is provided on the rear side of the air chamber, and a metal hose is connected to the air inlet, which is connected to an external high-pressure air source through the metal hose. The front side of the air chamber is provided with a gradually shrinking closing section, and an air outlet is provided at the front end of the closing section. The air outlet is a rectangular blade shape.

2. The air curtain device for blocking smoke at the PS converter butt anode charging port according to claim 1, characterized in that: The closing section includes a first straight section, a first inclined section, a second straight section and a second inclined section in sequence. The diameters of the above four sections are successively increased and expanded to form an internally ventilated cavity, wherein the second inclined section is connected to the front side of the air chamber, and the air outlet is arranged on the front end surface of the first straight section.

3. The air curtain device for blocking smoke at the PS converter butt anode charging port according to claim 2, characterized in that: The connection between the first straight section and the first inclined section is provided with a chamfered corner, the connection between the second straight section and the second inclined section is provided with a chamfered corner, the connection between the first inclined section and the second straight section is provided with a chamfered corner, and the connection between the second inclined section and the air chamber is provided with a chamfered corner.

4. The air curtain device for blocking smoke at the PS converter butt anode charging port according to claim 1 is characterized in that: The air outlet is a rectangular blade shape with a size of 5mm in width and 1200mm in height.

5. The air curtain device for blocking smoke at the PS converter butt anode charging port according to claim 1, characterized in that: The air chamber is installed vertically. The air chamber is a square steel structure cavity with a length of 0.1 meters, a width of 0.05 meters and a height of 1.2 meters. The air chamber can be rotated with the rotating support mechanism as the center to adjust the angle of ±45°.

6. The air curtain device for blocking smoke at the PS converter butt anode charging port according to claim 1, characterized in that: The rotating support mechanism includes an upper support rod located at the top of the air chamber and a lower support rod located at the bottom of the air chamber. The lower support rod is equipped with a rotating gear, which is connected to an external drive motor through a transmission gear to realize the rotational movement of the air chamber.

7. The air curtain device for blocking smoke at the PS converter butt anode charging port according to claim 1, characterized in that: The number of the air inlets is 2 DN50 inlets, which are arranged in an upper and lower separation manner, and each air inlet is connected to a metal hose and a high-pressure air source.

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