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

Abstract

The invention discloses an air curtain device for blocking flue gas of a PS converter anode scrap charging 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 formed in the rear side part of the air chamber, a metal hose is connected to the air inlet, the air inlet is connected with an external high-pressure air source through the metal hose, and a necking section which is gradually reduced is arranged at the front side part of the air chamber. An air outlet is formed in the front side end of the closing-in section and is in a rectangular blade point shape. The air chamber and the blade-shaped air outlet are connected through the closing-in section, so that the diameter of high-pressure air is gradually reduced from entering to blowing out, 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 is 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 invention relates to the technical field of flue gas treatment equipment for a PS converter butt anode charging port, in particular to an air curtain device for weighing and shaping a packaging box and blocking flue gas at a PS converter butt anode charging port. Background Art

[0002] When blowing matte in PS converter, there is often excess heat during the copper making period. Cold copper is added to the furnace and the excess heat is used to melt the cold copper to increase the output of crude copper. The traditional way of adding cold copper is to stop the converter from blowing, turn out the cold copper, and then turn it back in for blowing. Frequent turning out of the furnace increases the blowing time. After technological development, nowadays, copper smelting enterprises all use scrap electrode feeders to add scrap electrodes (a kind of cold copper). The scrap electrode feeder uses crawlers to bring the bundled scrap electrodes to the tilting chute above the furnace mouth, lift the scrap electrode mouth gate, use a push rod to push the scrap electrodes into the furnace, retract the push rod, and drop the gate, and repeat this cycle until the required amount of scrap electrodes is added. At present, in general smelters, about 45 tons of cold copper are added to each copper furnace of PS converter, and the time for adding using the scrap electrode feeder is about 50 minutes. Its advantage is that it can be added during the cold copper blowing process without stopping the air, which greatly improves production efficiency. The disadvantage is that when the flue negative pressure is insufficient, during the period when the gate of the butt pole inlet is opened to add cold copper, a large amount of high-concentration SO2 flue gas generated by the furnace blowing will overflow from the gate into the factory building, resulting in a poor environment in the factory building, affecting the vision of the operators and being detrimental to the health of the employees. Since there is currently no good way to collect the flue gas at the butt pole inlet of the PS converter, it is very meaningful to make a new type of air curtain device with simple structure and easy operation to block the flue gas. Summary of the invention

[0003] The purpose of the present invention is to provide an air curtain device for blocking smoke at the butt pole charging port of a PS converter in view of the above situation. The air curtain device effectively solves the problem of smoke overflow at the butt pole charging port of the PS converter.

[0004] The specific scheme of the present invention is: an air curtain device for blocking smoke at the residual pole feeding port of a PS converter, comprising an air chamber, wherein a rotating support mechanism is 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, and an external high-pressure air source is connected through the metal hose, a gradually narrowing closing section is arranged at the front side of the air chamber, an air outlet is arranged at the front side end of the closing section, and the air outlet is a rectangular blade type.

[0005] Furthermore, the closing section in the present invention includes a first straight section, a first inclined section, a second straight section and a second inclined section in sequence, and the diameters of the above four sections are successively increased and expanded to form an internally ventilated hollow 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.

[0006] Furthermore, in the present invention, a chamfer is provided at the connection between the first straight section and the first inclined section, a chamfer is provided at the connection between the second straight section and the second inclined section, a chamfer is provided at the connection between the first inclined section and the second straight section, and a chamfer is provided at the connection between the second inclined section and the air chamber.

[0007] Furthermore, the air outlet described in the present invention is a rectangular blade-shaped outlet with dimensions of 5 mm in width and 1200 mm in height.

[0008] Furthermore, the air chamber described in the present invention is installed vertically, and 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 rotate around the rotating support mechanism to adjust the angle of ±45°.

[0009] Furthermore, the rotating support mechanism described in the present invention 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 driving motor through a transmission gear to realize the rotational movement of the air chamber.

[0010] Furthermore, the number of air inlets in the present invention is 2 air inlets of DN50 size, the two air inlets are arranged separately up and down, and each air inlet is connected to a metal hose connected to a high-pressure air source.

[0011] The present invention has the following beneficial effects: 1. The present invention has a simple overall structure and is easy to operate. It can better solve the problem of smoke overflow at the residual pole port of the PS converter when adding cold copper, realizes green and environmentally friendly production, and is suitable for promotion and application in the smelting industry.

[0012] 2. In the present invention, the air chamber and the blade-shaped air outlet are connected by a closing section, so that the diameter of the high-pressure air gradually decreases from entering to being blown out, the blowing pressure will become greater and greater, and the wind force will become stronger and stronger, which can better prevent the smoke that is about to overflow, and the effect is better.

[0013] 3. In the present invention, the entire air chamber is connected to the transmission gear through a rotating gear and is connected to an external drive motor. The drive motor adopts a servo motor, which can drive the entire air chamber to rotate within a range of ±45°, so that the air curtain can block the smoke without dead angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the main viewing direction structure of the present invention; Figure 2 It is a schematic diagram of the structure of the present invention in a top view; Figure 3 It is a schematic diagram of the structure of the present invention in a side view direction.

[0015] In the figure: 1—upper support rod, 2—closing 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

[0016] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. It is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the present invention. In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the invented product is usually placed when used, which are only for the convenience of describing the present invention or simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0017] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] See also Figure 1 to Figure 3The present invention is an air curtain device for blocking smoke at the residual pole charging port of a PS converter, comprising an air chamber 3, wherein the upper and lower ends of the air chamber are provided with a rotating support mechanism, an air inlet 4 is provided at the rear side of the air chamber, a metal hose is connected to the air inlet, and an external high-pressure gas source is connected to the metal hose (not shown in the schematic diagram). Further, the number of air inlets described in the present invention is 2 DN50 air inlets, and the two air inlets are arranged and arranged separately from each other up and down, and each air inlet is connected to a metal hose and connected to the high-pressure gas source; a gradually shrinking closing section 2 is provided at the front side of the air chamber, and an air outlet 12 is provided at the front side end of the closing section, and the air outlet is a rectangular blade type. Further, the air outlet described in the present invention is a rectangular blade type with a size of 5 mm in width and 1200 mm in height. Furthermore, the closing section in the present invention includes a first straight section 7, a first bevel section 8, a second straight section 9 and a second bevel section 10 in sequence, and the diameters of the above four sections are successively increased and expanded to form an internally ventilated hollow cavity, wherein the second bevel 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. Furthermore, in the present invention, a chamfer 11 is arranged at the connection between the first straight section and the first bevel section, a chamfer is arranged at the connection between the second straight section and the second bevel section, a chamfer is arranged at the connection between the first bevel section and the second straight section, and a chamfer is arranged at the connection between the second bevel section and the air chamber.

[0019] Furthermore, the air chamber in this embodiment is installed vertically, and 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 rotate around the rotating support mechanism to adjust the angle of ±45°.

[0020] Furthermore, the rotating support mechanism described in the present invention 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 provided with a rotating gear 6, which is connected to an external driving motor through a transmission gear (not shown in the schematic diagram) to realize the rotational movement of the air chamber.

[0021] In the technical solution provided by the present invention, a metal hose is connected to a high-pressure air source pipe to provide high-pressure air into the air chamber, and is sprayed toward the residual pole inlet through a blade-shaped air outlet to form an air curtain, thereby effectively preventing the smoke at the residual pole inlet from overflowing and reducing the temperature of the residual pole outlet.

[0022] In addition, the driving motor drives the rotating gear to rotate, and the rotating gear drives the upper and lower support rods to rotate, so that the rotating air chamber can change the direction of the air curtain. After adjusting the angle, the driving is stopped, the rotating gear stops, and the air chamber does not move, and the air outlet sprays according to the fixed jet direction. The present invention has a simple structure and is easy to operate. It better solves the problem of flue gas overflow at the PS converter residual pole port when adding cold copper, and realizes green and environmentally friendly production.

[0023] The present invention has a simple overall structure and is easy to operate. It can better solve the problem of smoke overflow at the residual pole port of the PS converter when adding cold copper, realizes green and environmentally friendly production, and is suitable for promotion and application in the smelting industry.

[0024] In the present invention, the air chamber and the blade-shaped air outlet are connected by a closing section, so that the diameter of the high-pressure air gradually decreases from entering to blowing out, the blowing pressure will become larger and larger, and the wind force will become stronger and stronger, which can better prevent the smoke that is about to overflow, and the effect is better. In the present invention, the entire air chamber is connected to the transmission gear through a rotating gear, and is connected to an external drive motor. The drive motor adopts a servo motor, which can drive the entire air chamber to rotate within the range of ±45°, so that the air curtain can block the smoke without dead angles.

Claims

1. An air curtain device for blocking smoke at the PS converter residual pole charging port, characterized in that: 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 at 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. A gradually narrowing closing section is provided at the front side of the air chamber, and an air outlet is provided at the front side end of the closing section, and the air outlet is a rectangular blade type.

2. The gas curtain device for blocking smoke at the PS converter butt feeding port according to claim 1 is 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, and the diameters of the above four sections are increased and expanded in sequence to form an internally ventilated hollow 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 gas curtain device for blocking smoke at the PS converter butt feeding port according to claim 2 is characterized in that: A chamfer is provided at the connection between the first straight section and the first bevel section, a chamfer is provided at the connection between the second straight section and the second bevel section, a chamfer is provided at the connection between the first bevel section and the second straight section, and a chamfer is provided at the connection between the second bevel section and the air chamber.

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

5. The gas curtain device for blocking smoke at the PS converter butt feeding port according to claim 1 is characterized in that: The air chamber is installed vertically, and 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 rotate with the rotating support mechanism as the center to adjust the angle of ±45°.

6. The gas curtain device for blocking smoke at the PS converter butt feeding port according to claim 1 is 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 driving motor through a transmission gear to realize the rotating movement of the air chamber.

7. The gas curtain device for blocking smoke at the PS converter butt feeding port according to claim 1 is characterized by: The number of the air inlets is 2 DN50 inlets, which are arranged in a vertically separated manner, and each air inlet is connected to a metal hose and a high-pressure air source.

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