An oxygen-enriched side-blown furnace structure for smelting

Abstract

The present invention discloses a structure of an oxygen-enriched side-blown furnace for smelting in the technical field of side-blown furnace devices, which includes a base; the body of the oxygen-enriched side-blown furnace is arranged above the base; a flue pipe penetrates through the body and extends into the interior of the body; a sealing cover plate is hinged to one end of the flue pipe penetrating into the body, and the sealing cover plate can close the lower pipe orifice of the flue pipe after being turned upwards; a driving mechanism is used to drive the sealing cover plate to turn downwards when the air pressure in the body is too large, so as to open the lower pipe orifice of the flue pipe. By setting the sealing cover plate and the driving mechanism, only when the air pressure in the body reaches a certain level, the sealing cover plate turns downwards, enabling the flue gas to be discharged, thus avoiding the influence on the smelting efficiency caused by the insufficient combustion of the oxygen-enriched gas in the body. In addition, by setting that the detection unit operates after being subjected to a large air pressure, and then drives the rubber plug to move, causing the sealing cover plate to turn downwards, the structure is simple and can achieve automatic operation to a certain extent.

Description

Technical Field

[0001] The present invention relates to the technical field of side-blown furnace devices, and specifically to a structure of an oxygen-enriched side-blown furnace for smelting. Background Art

[0002] Oxygen-enriched combustion refers to combustion using oxygen-enriched air with a higher oxygen concentration than normal air. It is an efficient and energy-saving combustion technology and is often applied in the smelting industrial field.

[0003] After retrieval, Chinese Patent No. CN211451836U discloses an oxygen-enriched side-blown furnace, which includes a side-blown furnace body. One end of the top of the side-blown furnace body is provided with a flue, the other end of the top of the side-blown furnace body is provided with a feed inlet, and oxygen-enriched air pipes are respectively arranged on both sides of the side-blown furnace body. A spiral blade is arranged on the inner wall of the flue, the outer edge of the spiral blade is fixed on the side wall of the flue, and the inner edge of the spiral blade is infinitely close to the central axis.

[0004] When the existing side-blown furnace equipment is operating, the flue is in an open state. In this way, it is easy to cause the oxygen-enriched air to be blown into the side-blown furnace body and then discharged into the flue along with the flue gas, resulting in waste of oxygen-enriched resources. In addition, it will take away part of the heat and reduce the smelting efficiency.

[0005] To solve the above problems, we therefore propose a structure of an oxygen-enriched side-blown furnace for smelting. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a structure of an oxygen-enriched side-blown furnace for smelting. To solve the technical problem in the above-mentioned background art that when the existing side-blown furnace equipment is operating, the flue is in an open state, which easily causes the oxygen-enriched air to be blown into the side-blown furnace body and then discharged into the flue along with the flue gas, resulting in waste of oxygen-enriched resources. In addition, it will take away part of the heat and reduce the smelting efficiency, the present invention provides the following technical solutions:

[0007] The present invention provides a structure of an oxygen-enriched side-blown furnace for smelting, including:

[0008] A base;

[0009] The body of the oxygen-enriched side-blown furnace, arranged above the base;

[0010] A flue pipe, passing through the body and extending into the body;

[0011] A sealing cover plate, hinged to one end of the flue pipe penetrating into the body, and the sealing cover plate can close the lower end opening of the flue pipe after being turned upwards;

[0012] A driving mechanism is used to drive the sealing cover plate to turn downward when the air pressure in the body is too high, so as to be able to open the lower pipe orifice of the flue pipe.

[0013] In a structure of an oxygen-enriched side-blown furnace for smelting as described above, roller mounting seats are respectively arranged at both ends of the base corresponding to the axial direction of the body. A plurality of rollers are rotatably connected to the roller mounting seats. A guide shoe is sleeved on the body. A roller groove for the rollers to be rotatably mounted is formed on the guide shoe. The rollers roll in the roller groove and support the body.

[0014] In a structure of an oxygen-enriched side-blown furnace for smelting as described above, a sealing gasket is arranged on the sealing cover plate. After the sealing gasket abuts against the lower end face of the flue pipe, the orifice of the flue pipe can be sealed.

[0015] In a structure of an oxygen-enriched side-blown furnace for smelting as described above, a plurality of partition plates are sequentially arranged from top to bottom in the flue pipe. A serpentine flue gas passage is formed between the plurality of partition plates and the inner wall of the flue pipe. A communication cavity that rotates around its own axis and has an annular cross section is arranged in the flue pipe. Two joints communicating with the communication cavity are arranged on the flue pipe.

[0016] In a structure of an oxygen-enriched side-blown furnace for smelting as described above, the driving mechanism includes:

[0017] A turning arm is arranged at one end of the rotation fulcrum of the sealing cover plate on the flue pipe;

[0018] A connecting sleeve is embedded on the body, and a plurality of through holes in the form of communication holes are formed on the end face of the connecting sleeve;

[0019] A driving rod is coaxially arranged on the connecting sleeve and can slide freely;

[0020] A connecting head is fixedly connected to the end of the driving rod penetrating into the body, and a short pin is arranged on the connecting head. A kidney-shaped hole for the short pin to be inserted is formed on the turning arm. The length direction of the kidney-shaped hole is parallel to the length direction of the turning arm and has an included angle with the axial direction of the driving rod;

[0021] A detection unit is used to drive the driving rod to slide upward after the air pressure inside the body reaches a certain level, so that the sealing cover plate turns downward, and then the lower port of the flue pipe is opened.

[0022] In a structure of an oxygen-enriched side-blown furnace for smelting as described above, the detection unit includes:

[0023] A detection seat is fixedly connected to the outer wall of the body. The inside of the detection seat is hollow and the side connected to the body is open;

[0024] A rubber stopper is fixedly connected to one end of the driving rod that penetrates into the detection seat.

[0025] A spring is vertically installed in the detection seat, and one end of its elastic force direction elastically abuts against the rubber stopper.

[0026] In a structure of an oxygen-enriched side-blown furnace for smelting as described above, a ventilation hole is provided at the top of the detection seat.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows: By setting the sealing cover plate and the driving mechanism, only when the air pressure in the body reaches a certain level, the sealing cover plate flips downward, enabling the flue gas to be discharged. This avoids the influence on the smelting efficiency caused by the insufficient combustion of the oxygen-enriched gas in the body. Additionally, by setting the detection unit to act after being subjected to a relatively large air pressure, and then driving the rubber stopper to move, causing the sealing cover plate to flip downward, the structure is simple and can achieve automated operation to a certain extent. Description of the Drawings

[0028] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0029] Figure 1 is a schematic structural diagram of a structure of an oxygen-enriched side-blown furnace for smelting according to the present invention;

[0030] Figure 2 is Figure 1 an enlarged schematic diagram of the partial structure at A in

[0031] Figure 3 is Figure 1 an enlarged schematic diagram of the partial structure at B in

[0032] Figure 4 is a schematic structural diagram of the communication sleeve in the present invention.

[0033] In the figure: 1 - base, 2 - oxygen-enriched inlet, 3 - roller, 4 - roller mounting seat, 5 - guide shoe, 6 - roller groove, 7 - body, 8 - joint, 9 - flue pipe, 10 - flue gas channel, 11 - partition board, 12 - communication cavity, 13 - driving rod, 14 - rubber stopper, 15 - spring, 16 - detection seat, 17 - ventilation hole, 18 - communication hole, 19 - sealing gasket, 20 - sealing cover plate, 21 - flipping arm, 22 - kidney-shaped hole, 23 - short pin, 24 - connecting head, 25 - communication sleeve. Detailed Embodiments

[0034] The following describes the preferred embodiments of the present invention with reference to the drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention. Embodiment

[0035] Please refer to Figures 1-4, A structure of an oxygen-enriched side-blowing furnace for smelting, including a base 1 installed on a horizontally placed surface. Above the base 1, there is a main body 7 of the oxygen-enriched side-blowing furnace. Specifically, at both ends of the base 1 corresponding to the axial direction of the main body 7, there are roller mounting seats 4 respectively. A plurality of rollers 3 are rotatably connected to the roller mounting seats 4. A guide shoe 5 is sleeved on the main body 7, and a roller groove 6 for the roller 3 to roll and install is opened on the guide shoe 5. The roller 3 rolls in the roller groove 6 and supports the main body 7. By the roller 3 rolling in the roller groove 6, the main body 7 has support. In addition, the main body 7 can rotate above the base 1. A flue pipe 9 penetrates through the main body 7. The lower end of the flue pipe 9 extends into the interior of the main body 7, and the upper end of the flue pipe 9 is communicated with an external pipeline, so that the flue gas in the main body 7 can be discharged through the flue pipe 9. In addition, a sealing cover plate 20 is hinged to one end of the flue pipe 9 that penetrates into the main body 7. After the sealing cover plate 20 is turned upwards, it can close the lower end pipe orifice of the flue pipe 9. Further, a sealing gasket 19 is provided on the sealing cover plate 20. After the sealing gasket 19 abuts against the lower end surface of the flue pipe 9, it can seal the orifice of the flue pipe 9 and improve the sealing effect between the sealing cover plate 20 and the lower port orifice of the flue pipe 9. A plurality of partition plates 11 are sequentially arranged from top to bottom in the flue pipe 9. A serpentine flue gas passage 10 is formed between the plurality of partition plates 11 and the inner wall of the flue pipe 9. A communicating cavity 12 that rotates around its own axis and has an annular cross-section is provided in the flue pipe 9. Two joints 8 that communicate with the communicating cavity 12 are provided on the flue pipe 9. The two joints 8 are respectively connected to an external water collecting device through pipelines. In this way, the water collecting device continuously conveys water into the communicating cavity 12. After the flue gas is discharged into the flue pipe 9, it will flow through the flue gas passage. Since the time of flue gas flow is increased, the waste heat in the flue gas can heat the water in the communicating cavity. The heated water flows back to the water collecting device until the water temperature in the water collecting device reaches a certain level, and then the water is heated, thereby realizing the utilization of the waste heat in the flue gas. One end of the rotation fulcrum of the sealing cover plate 20 on the flue pipe 9 is provided with a turning arm 21, or the turning arm 21 is integrally formed with the sealing cover plate 20. The lower end of the turning arm 21 extends downward obliquely. A communicating sleeve 25 is embedded on the outer wall of the main body 7. A plurality of through-hole-shaped communication holes 18 are opened on the end surface of the communicating sleeve 25. A driving rod 13 that can slide freely is coaxially penetrated through the communicating sleeve 25. One end of the driving rod 13 that penetrates into the main body 7 is fixedly connected with a connecting head 24, and a short pin 23 is provided on the connecting head 24. A waist-shaped hole 22 for the short pin 23 to be inserted is opened on the turning arm 21. The length direction of the waist-shaped hole 22 is parallel to the length direction of the turning arm 21 and has an included angle with the axial direction of the driving rod 13. In this way, when the driving rod 13 moves upward, the short pin can slide in the waist-shaped hole 22 and can drive the turning arm 21 to turn upward. In addition, a detection seat 16 is fixedly connected to the outer wall of the main body 7. The interior of the detection seat 16 is hollow and open on the side connected to the main body 7. One end of the driving rod 13 that penetrates into the detection seat 16 is fixedly connected with a rubber plug 14. A spring 15 is vertically installed in the detection seat 16, and one end of its elastic force elastically abuts against the rubber plug 14.Oxygen-rich gas is introduced into the main body 7 through the oxygen-rich inlet 2 on the main body 7. As the gas is gradually introduced, the air pressure inside the main body 7 increases accordingly. In order to improve the utilization rate of the oxygen-rich gas and increase the calorific value, when the acting force of the air pressure inside the main body 7 on the rubber plug 14 is less than the elastic abutting force of the spring on the rubber plug, the inside of the main body 7 is in a relatively sealed state, enabling the oxygen-rich gas to burn fully. When the air pressure inside the main body 7 increases, that is, when the acting force of the air pressure inside the main body 7 on the rubber plug 14 is greater than the elastic abutting force of the spring on the rubber plug, the rubber plug will move upward and compress the spring, thereby causing the driving rod 13 to slide upward, causing the flipping arm to flip upward, and further causing the sealing cover plate to flip downward. The flue gas inside the main body will enter the flue pipe through the lower end pipe orifice of the flue pipe, realizing the discharge of the flue gas. In addition, a ventilation hole 17 is provided at the top of the detection seat 16, so that the rubber plug slides smoothly inside the detection seat, avoiding the phenomenon of air resistance.

[0036] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be intermediate elements at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are only for the purpose of illustration. Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which this invention belongs. The terms used in this specification in the description of this invention are only for the purpose of describing specific embodiments and are not used to limit this invention. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0037] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A structure of an oxygen-enriched side-blown furnace for smelting, characterized in that, it includes: a base (1); the body (7) of the oxygen-enriched side-blown furnace, which is arranged above the base (1); a flue pipe (9), which penetrates through the body (7) and extends into the interior of the body (7); a sealing cover plate (20), which is hinged to one end of the flue pipe (9) penetrating into the body (7), and the sealing cover plate (20) can close the lower pipe orifice of the flue pipe (9) after being turned upwards; a driving mechanism, which is used to drive the sealing cover plate (20) to turn downwards when the air pressure in the body (7) is too high, so as to open the lower pipe orifice of the flue pipe (9); the driving mechanism includes: a turning arm (21), which is arranged at one end of the rotation fulcrum of the sealing cover plate (20) on the flue pipe (9); a connecting sleeve (25), which is embedded on the body (7), and a plurality of through-hole-shaped communication holes (18) are formed on the end face of the connecting sleeve (25); a driving rod (13), which is coaxially penetrated through the connecting sleeve (25) and can slide freely; a connecting head (24), which is fixedly connected to one end of the driving rod (13) penetrating into the body (7), and a short pin (23) is arranged on the connecting head (24). A kidney-shaped hole (22) for inserting the short pin (23) is formed on the turning arm (21). The length direction of the kidney-shaped hole (22) is parallel to the length direction of the turning arm (21) and has an included angle with the axial direction of the driving rod (13); a detection unit, which is used to drive the driving rod (13) to slide upwards after the air pressure inside the body (7) reaches a certain level, so that the sealing cover plate (20) turns downwards, and then the lower port part of the flue pipe (9) is opened; the detection unit includes: a detection seat (16), which is fixedly connected to the outer wall of the body (7). The inside of the detection seat (16) is hollow and the side connected to the body (7) is open. A ventilation hole (17) is formed at the top of the detection seat (16); a rubber plug (14), which is fixedly connected to one end of the driving rod (13) penetrating into the detection seat (16); a spring (15), which is vertically installed in the detection seat (16), and one end of its elastic force direction elastically abuts against the rubber plug (14).

2. The structure of an oxygen-enriched side-blown furnace for smelting according to claim 1, characterized in that, rollers mounting seats (4) are respectively arranged at both ends of the base (1) corresponding to the axial direction of the body (7). A plurality of rollers (3) are rotatably connected to the rollers mounting seats (4). A guide shoe (5) is sleeved on the body (7). A roller groove (6) for rolling and installing the rollers (3) is formed on the guide shoe (5). The rollers (3) roll in the roller groove (6) and support the body (7).

3. The structure of an oxygen-enriched side-blown furnace for smelting according to claim 1, characterized in that, a sealing gasket (19) is arranged on the sealing cover plate (20). After the sealing gasket (19) abuts against the lower end face of the flue pipe (9), the orifice of the flue pipe (9) can be sealed.

4. The structure of an oxygen-enriched side-blown furnace for smelting according to claim 1, characterized in that, A plurality of partition plates (11) are successively arranged in the flue duct (9) from top to bottom. A serpentine flue gas passage (10) is formed between the plurality of partition plates (11) and the inner wall of the flue duct (9). A communication cavity (12) which rotates around its own axis and has an annular cross-section is arranged in the flue duct (9). Two connectors (8) which communicate with the communication cavity (12) are arranged on the flue duct (9).

Images