Combined steel slag air quenching gas nozzle

Abstract

The utility model discloses a combined steel slag air quenching gas nozzle which comprises a mounting bracket, a nozzle body mounted on the mounting bracket, and a PLC (Programmable Logic Controller), the nozzle body comprises a nozzle reference fixing plate, a nozzle movable lifting plate, a nozzle separation adjusting plate, a nozzle outlet lateral baffle and a nozzle air inlet adjusting plate; the nozzle reference fixing plate is obliquely arranged on the mounting bracket; the nozzle movable lifting plate and the nozzle reference fixing plate are enclosed to form a nozzle inner cavity; the nozzle separation adjusting plate is mounted on one side, close to the air outlet, of the inner cavity of the nozzle; the nozzle air inlet adjusting plate is positioned in the nozzle inner cavity below the nozzle separation adjusting plate; the nozzle outlet lateral baffles are symmetrically mounted on the outer side of an outlet of the nozzle body; the utility model provides a combined steel slag air-quenching gas nozzle, which solves the problem of poor air-quenching granulation effect caused by fixed and unadjustable nozzle parameters, and improves the production efficiency of steel slag air-quenching granulation.

Description

Technical Field

[0001] The utility model relates to the technical field of steel slag processing equipment, in particular to a combined steel slag wind quenching gas nozzle. Background Art

[0002] The slag air quenching process is the shortest process in the field of slag treatment technology. It mainly relies on the impact of high-speed airflow on the slag to directly achieve air quenching granulation and cooling of the molten slag, eliminating various mechanical crushing equipment and creating conditions for the recovery of waste heat from the slag.

[0003] Among them, the gas nozzle for air quenching granulation is the core technical equipment of this process. The gas nozzles currently used are basically nozzles with fixed parameters. The air quenching process cannot achieve dynamic nozzle parameter adjustment, and the air quenching efficiency is difficult to improve.

[0004] Specifically, the production organization characteristics of slag air quenching are the same as the periodic production rhythm of steelmaking, and slag is produced once for each furnace of steel. The slag liquid discharged into the slag pot will be affected by the temperature difference between the upper and lower layers. During the flow process after the slag pot is overturned, its physical and chemical properties will change in stages. However, when using the current gas nozzle with fixed parameters, the gas velocity and angle at its outlet cannot adapt to the changing characteristics of the slag, resulting in unstable granulation effect and failure to achieve high-efficiency air quenching granulation effect throughout the process.

[0005] At the same time, the intermittent flow of liquid slag causes the liquid slag to gradually condense on the inner wall of the diversion equipment, forming a slag shell of a certain thickness. After several tanks of slag have flowed through, the outlet flow stream of the diversion equipment gradually shrinks due to the increase in the thickness of the slag shell, and the shape of the flow stream also shows a phased change, making it impossible for the gas ejected from the fixed nozzle in the subsequent production process to effectively impact and crush the slag flow, which not only reduces the granulation effect of the slag, but also increases the gas consumption. Summary of the invention

[0006] The technical problem to be solved by the utility model is to provide a combined steel slag air quenching gas nozzle, which can adjust the nozzle operating parameters and the gas velocity and angle of the outlet during the air quenching granulation process to adapt to changes in process conditions and improve the production efficiency of steel slag air quenching granulation.

[0007] In order to solve the above technical problems, the technical solutions adopted by the present utility model are as follows.

[0008] A combined slag air quenching gas nozzle, comprising a mounting bracket, a nozzle body mounted on the mounting bracket, and a PLC controller; the nozzle body comprises a nozzle reference fixing plate, a nozzle movable lifting plate, a nozzle separation adjustment plate, a nozzle outlet lateral baffle, and a nozzle air inlet adjustment plate; the nozzle reference fixing plate is tiltedly arranged on the mounting bracket, and the nozzle reference fixing plate comprises a top plate tiltedly arranged on the mounting bracket and side plates mounted on both sides of the lower end surface of the top plate; the nozzle movable lifting plate is installed below the nozzle reference fixing plate and enclosed with the nozzle reference fixing plate to form a nozzle inner cavity; the nozzle separation adjustment plate is installed on the side of the nozzle inner cavity close to the air outlet through a hinge shaft, and the nozzle separation adjustment plate is installed on the side of the nozzle inner cavity close to the air outlet through a hinge shaft. The plate divides the air outlet of the nozzle cavity into an upper nozzle and a lower nozzle; the two sides of the nozzle separation adjustment plate are respectively connected to the second cylinder for adjusting the air outlet volume and the air outlet angle of the upper nozzle and the lower nozzle; the nozzle air inlet adjustment plate is located in the nozzle cavity below the nozzle separation adjustment plate and is hinged to the hinge shaft, and the two sides of the nozzle air inlet adjustment plate are respectively connected to the fourth cylinder for adjusting the air inlet volume of the upper nozzle and the lower nozzle; the nozzle outlet lateral baffles are symmetrically installed on the outer side of the outlet of the nozzle body, and the two ends of the nozzle outlet lateral baffles are respectively connected to the third cylinder; the controlled ends of the second cylinder, the third cylinder, and the fourth cylinder are respectively connected to the output ends of the PLC controller.

[0009] In the above-mentioned combined slag air quenching gas nozzle, both sides of the nozzle movable lifting plate are respectively slidably connected to a plurality of clamping limit plates arranged on the inner sides of the two side plates, and the back of the nozzle movable lifting plate is connected to a first cylinder arranged on the mounting bracket and used to adjust the position of the nozzle movable lifting plate; the controlled end of the first cylinder is connected to the output end of the PLC controller.

[0010] In the above-mentioned combined slag wind quenching gas nozzle, the side panel is also provided with a first guide component for guiding and limiting the movable lifting plate of the nozzle; the first guide component includes a first slide groove and an extension plate slidably assembled with the first slide groove, the first slide groove is opened on the side panel and is arranged parallel to the movable lifting plate of the nozzle, and the extension plates are respectively arranged on both sides of the movable lifting plate of the nozzle.

[0011] The above-mentioned combined slag air quenching gas nozzle, the nozzle partition adjustment plate is a flat and long plate structure with an obtuse triangle cross section, one end of the nozzle partition adjustment plate set at an acute angle is hinged on the hinge shaft, and rotates around the hinge shaft with the acute angle vertex of the end as the center of the circle.

[0012] The above-mentioned combined slag wind quenching gas nozzle, the side plate is provided with a second guide assembly for guiding and limiting the nozzle partition adjustment plate; the second guide assembly includes a second slide groove, an upper guide column, a third slide groove, and a lower guide column; the second slide groove and the third slide groove are respectively opened on the side plate, the second slide groove is slidably connected to the upper guide column, and the third slide groove is slidably connected to the lower guide column; the upper guide column is arranged on both sides of the nozzle partition adjustment plate away from the obtuse angle end, and the upper guide column is connected to the second cylinder; the lower guide column is arranged on both sides of the nozzle partition adjustment plate close to the obtuse angle end, and the lower guide column and the upper guide column move along the same arc trajectory.

[0013] The above-mentioned combined slag wind quenching gas nozzle, the side plate is also provided with a third guide component for guiding and limiting the nozzle air inlet adjustment plate; the third guide component includes a movable shaft arranged on both sides of the nozzle air inlet adjustment plate, and the side plate is provided with a fourth slide groove slidably assembled with the movable shaft; the movable shaft is connected to the fourth cylinder.

[0014] The above-mentioned combined slag air quenching gas nozzle, the nozzle outlet lateral baffle adopts a long cylindrical plate structure with a right-angled triangle cross-section, wherein the short right-angled side of the right-angled triangle is vertically aligned with the side plate of the nozzle reference fixing plate, and the long right-angled sides of the two nozzle outlet lateral baffles are arranged opposite to each other.

[0015] Due to the adoption of the above technical scheme, the technical progress achieved by the present invention is as follows.

[0016] The utility model provides a combined steel slag air quenching gas nozzle, which solves the problem of poor air quenching granulation effect due to the fixed and unadjustable nozzle parameters through the improvement of the nozzle structure, improves the production efficiency of steel slag air quenching granulation, and installs the nozzle body and the cylinder for adjustment on a mounting bracket, which is convenient for rapid replacement of the nozzle body for offline maintenance.

[0017] The utility model divides the original fixed air outlet into two upper and lower nozzles by arranging a nozzle separation adjustment plate inside the nozzle body, and realizes dynamic adjustment of the upper and lower nozzles by connecting the nozzle separation adjustment plate with the cylinder to control the nozzle separation adjustment plate to rotate around the hinge axis; realizes dynamic adjustment of the lower nozzle by arranging a nozzle movable lifting plate connected to the cylinder; adjusts the air intake volume corresponding to the upper and lower nozzles by arranging an adjustable nozzle inlet adjustment plate; and realizes dynamic adjustment of the air outlet angles on both sides of the nozzle by arranging nozzle outlet lateral baffles on both sides of the nozzle.

[0018] The utility model combines the above-mentioned nozzle partition adjustment plate, nozzle movable lifting plate, nozzle air inlet adjustment plate, nozzle outlet side baffle with the automated control of the PLC controller, and refines the nozzle operating parameters, gas velocity and angle at the outlet during the steel slag air quenching and granulation process, so that it can adapt to changes in process conditions and improve the production efficiency of the steel slag air quenching and granulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a first structural schematic diagram of the utility model;

[0020] Figure 2 It is a second structural schematic diagram of the utility model;

[0021] Figure 3 It is the front view of the utility model;

[0022] Figure 4 for Figure 3 A-direction structural diagram in FIG.

[0023] Figure 5 It is a right side view of the utility model;

[0024] Figure 6 for Figure 5 BB section view in the figure;

[0025] Figure 7 It is a top view of the utility model.

[0026] Wherein: 1. Mounting bracket, 2. Top plate, 3. Side plate, 4. Nozzle movable lifting plate, 5. Nozzle separation adjustment plate, 6. Nozzle outlet lateral baffle, 7. Upper nozzle outlet, 8. Lower nozzle outlet, 9. Nozzle air inlet adjustment plate, 10. Articulated shaft, 11. First cylinder, 12. First slide slot, 13. Extension plate, 14. Clamping limit plate, 15. Second cylinder, 16. Second slide slot, 17. Upper guide column, 18. Third slide slot, 19. Lower guide column, 20. Third cylinder, 21. Fourth cylinder, 22. Fourth slide slot, 23. Moving shaft. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0028] A combined slag air quenching gas nozzle, such as Figures 1 to 7 As shown, it includes a mounting bracket 1, a nozzle body mounted on the mounting bracket 1, and a PLC controller. The nozzle body includes a nozzle reference fixing plate, a nozzle movable lifting plate 4, a nozzle separation adjustment plate 5, a nozzle outlet side baffle 6, and a nozzle air inlet adjustment plate 9. The nozzle reference fixing plate is tilted on the mounting bracket 1, and the nozzle movable lifting plate 4 is installed below the nozzle reference fixing plate and is enclosed with the nozzle reference fixing plate to form a nozzle inner cavity.

[0029] The nozzle reference fixing plate includes a top plate 2 obliquely arranged on the mounting bracket 1 and side plates 3 installed on both sides of the lower end surface of the top plate 2. Figure 1 As shown, the inclination angle of the top plate 2 is 40°.

[0030] The two sides of the nozzle movable lifting plate 4 are respectively slidably connected with a plurality of clamping limit plates 14 arranged on the inner sides of the two side plates 3, such as Figure 6 As shown, the back of the nozzle movable lifting plate 4 is connected to the first cylinder 11 arranged on the mounting bracket 1, which can adjust the position of the nozzle movable lifting plate 4 and can cooperate with the nozzle separation adjustment plate 5 to adjust the outlet parameters of the lower nozzle 8.

[0031] The side plate 3 is also provided with a first guide component for guiding and limiting the nozzle movable lifting plate 4. Figure 3 As shown, the first guide assembly includes a first slide groove 12 and an extension plate 13 slidably assembled with the first slide groove 12, wherein the first slide groove 12 is opened on the side plate 3 and arranged parallel to the nozzle movable lifting plate 4, and the extension plates 13 are respectively arranged on both sides of the nozzle movable lifting plate 4, and can limit the moving distance of the nozzle movable lifting plate 4.

[0032] The nozzle partition adjustment plate 5 is installed on the side of the nozzle cavity close to the air outlet through the hinge shaft 10. Figure 2 As shown, the nozzle partition adjustment plate 5 divides the air outlet of the nozzle inner cavity into an upper nozzle outlet 7 and a lower nozzle outlet 8.

[0033] Both sides of the nozzle partition adjustment plate 5 are connected to the second cylinder 15 respectively, so as to adjust the air volume and the air outlet angle of the upper nozzle 7 and the lower nozzle 8.

[0034] The nozzle separation adjustment plate 5 is a flat and long plate structure with an obtuse triangle cross section. One end of the nozzle separation adjustment plate 5 set at an acute angle is hinged on the hinge shaft 10 and rotates around the hinge shaft 10 with the acute angle vertex of the end as the center of the circle.

[0035] The length-to-width ratio at the spray outlet is greater than 2.5, and the outlet spacing between the upper spray outlet 7 and the lower spray outlet 8 can be determined according to an obtuse angle side away from the hinged end.

[0036] A second guide assembly for guiding and limiting the nozzle partition adjustment plate 5 is provided on the side plate 3 , and the second guide assembly includes a second slide groove 16 , an upper guide column 17 , a third slide groove 18 , and a lower guide column 19 .

[0037] The second slide groove 16 and the third slide groove 18 are respectively provided on the side plate 3 . The second slide groove 16 is slidably connected to the upper guide column 17 , and the third slide groove 18 is slidably connected to the lower guide column 19 .

[0038] The upper guide column 17 is arranged on both sides of the nozzle partition adjustment plate 5 away from the obtuse angle end, and the upper guide column 17 is connected to the second cylinder 15 .

[0039] The lower guide column 19 is arranged on both sides of the nozzle partition adjustment plate 5 near the obtuse end, and the upper guide column 17 and the lower guide column 19 move along the same arc track.

[0040] When the second cylinder 15 pushes the upper guide column 17 to move along the second slide groove 16, the lower guide column 19 simultaneously moves along the third slide groove 18, so that the nozzle separation adjustment plate 5 can rotate along the hinge axis 10, thereby completing the adjustment of the outlet parameters of the upper nozzle 7 and the lower nozzle 8.

[0041] The nozzle air inlet adjustment plate 9 is located in the nozzle cavity below the nozzle partition adjustment plate 5 and is hinged to the hinge shaft 10. Both sides of the nozzle air inlet adjustment plate 9 are respectively connected to the fourth cylinder 21, and can adjust the air intake volume of the upper nozzle 7 and the lower nozzle 8.

[0042] The side plate 3 is also provided with a third guide component for guiding and limiting the nozzle air inlet adjustment plate 9. Figure 6 As shown, the third guide assembly includes a movable shaft 23 arranged on both sides of the nozzle air inlet adjustment plate 9, and a fourth sliding groove 22 slidably fitted with the movable shaft 23 is opened on the side plate 3.

[0043] The movable shaft 23 is connected to the fourth cylinder 21. When the fourth cylinder 21 is activated, it will push the movable shaft 23 to slide along the fourth slide groove 23, so that the nozzle air inlet adjustment plate 9 rotates around the hinge shaft 10 to complete the adjustment of the air inlet volume of the two nozzles.

[0044] The nozzle outlet lateral baffle 6 is symmetrically installed outside the nozzle outlet, such as Figure 2 As shown, both ends of the nozzle outlet lateral baffle 6 are connected to the third cylinder 20 respectively.

[0045] The nozzle outlet lateral baffle 6 adopts a long cylindrical plate structure with a right triangle cross section, wherein the short right-angled side of the right triangle is vertically aligned with the side plate 3 of the nozzle reference fixing plate, and the long right-angled sides of the two nozzle outlet lateral baffles 6 are arranged opposite to each other.

[0046] The lateral baffle plate 6 of the nozzle outlet is driven by the third cylinder 20 and can rotate with the right-angle vertex as the center of the circle, so as to realize the dynamic adjustment of the air outlet direction on both sides of the nozzle body.

[0047] The controlled ends of the first cylinder 11, the second cylinder 15, the third cylinder 20 and the fourth cylinder 21 are respectively connected to the output ends of the PLC controller.

[0048] The specific operating principle and control method of the utility model are as follows:

[0049] The first step is to take the intermittent wind quenching of several tanks of slag as a production cycle to ensure that the slag diversion equipment is in a maintained state during this cycle, that is, the diversion equipment does not clean the slag, and analyze the historical production data of this production cycle, and divide the time period and flow pattern. The specific analysis process is as follows.

[0050] Firstly, the production time of a single tank of slag is divided into several stages according to the change of slag temperature.

[0051] For example, when the production time of a single tank of slag is 12 minutes, the time can be divided into three sections: 3 minutes, 6 minutes, and 3 minutes.

[0052] Secondly, the morphology of the slag stream during the production cycle is divided into several types according to the change of the thickness of the slag layer in the diversion equipment.

[0053] For example, when the number of tanks for slag air quenching in one production cycle is 8, the first 2 tanks are in shape A, the 3rd to 5th tanks are in shape B, the 6th to 7th tanks are in shape C, and the 8th tank is in shape D.

[0054] In the second step, according to the division of time periods and flow stream forms in the above analysis process, the corresponding position parameters of the nozzle separation adjustment plate, nozzle lifting movable plate, nozzle air inlet adjustment plate, and nozzle outlet lateral baffle under different time periods and different flow stream forms are set through the matching PLC controller to complete the refinement of the nozzle parameters of the slag air quenching process.

[0055] For example, when the number of slag quenching tanks in a production cycle is 8, the production time of a single tank of slag is divided into three sections, and the flow patterns of the 8 tanks are divided into four forms: A, B, C, and D, it is possible to refine the original fixed nozzle parameters into more than 12 nozzle parameters.

[0056] The third step is to establish a linkage relationship between the above-mentioned set position parameters and the production time-related information of each tank of slag, such as the start and end signals of wind quenching of each tank of slag, so that the actual displacement of the corresponding cylinder will be automatically adjusted with the change of production time-related information, thereby realizing dynamic control of the gas nozzle parameters.

[0057] The utility model provides a combined steel slag air quenching gas nozzle, which solves the problem of poor air quenching granulation effect due to the fixed and unadjustable nozzle parameters through the improvement of the nozzle structure, improves the production efficiency of steel slag air quenching granulation, and installs the nozzle body and the cylinder for adjustment on a mounting bracket, which is convenient for rapid replacement of the nozzle body for offline maintenance.

[0058] The utility model divides the original fixed air outlet into two upper and lower nozzles by arranging a nozzle separation adjustment plate inside the nozzle body, and realizes dynamic adjustment of the upper and lower nozzles by connecting the nozzle separation adjustment plate with the cylinder to control the nozzle separation adjustment plate to rotate around the hinge axis; realizes dynamic adjustment of the lower nozzle by arranging a nozzle movable lifting plate connected to the cylinder; adjusts the air intake volume corresponding to the upper and lower nozzles by arranging an adjustable nozzle inlet adjustment plate; and realizes dynamic adjustment of the air outlet angles on both sides of the nozzle by arranging nozzle outlet lateral baffles on both sides of the nozzle.

[0059] The utility model combines the above-mentioned nozzle partition adjustment plate, nozzle movable lifting plate, nozzle air inlet adjustment plate, nozzle outlet side baffle with the automated control of the PLC controller, and refines the nozzle operating parameters, gas velocity and angle at the outlet during the steel slag air quenching and granulation process, so that it can adapt to changes in process conditions and improve the production efficiency of the steel slag air quenching and granulation.

Claims

1. A combined slag air quenching gas nozzle, characterized in that: The invention comprises a mounting bracket (1), a nozzle body mounted on the mounting bracket (1), and a PLC controller; the nozzle body comprises a nozzle reference fixing plate, a nozzle movable lifting plate (4), a nozzle separation adjustment plate (5), a nozzle outlet lateral baffle (6), and a nozzle air inlet adjustment plate (9); the nozzle reference fixing plate is tiltedly arranged on the mounting bracket (1), and the nozzle reference fixing plate comprises a top plate (2) tiltedly arranged on the mounting bracket (1) and side plates (3) mounted on both sides of the lower end surface of the top plate (2); the nozzle movable lifting plate (4) is mounted below the nozzle reference fixing plate and is enclosed with the nozzle reference fixing plate to form a nozzle inner cavity; the nozzle separation adjustment plate (5) is mounted on a side of the nozzle inner cavity close to the air outlet through a hinge shaft (10), and the nozzle separation adjustment plate (5) divides the air outlet of the nozzle inner cavity into an upper spray outlet and a lower spray outlet. The nozzle separation adjustment plate (5) is respectively connected to a second cylinder (15) for adjusting the air volume and air outlet angle of the upper nozzle (7) and the lower nozzle (8); the nozzle air inlet adjustment plate (9) is located in the nozzle cavity below the nozzle separation adjustment plate (5) and is hinged to the hinge shaft (10); the nozzle air inlet adjustment plate (9) is respectively connected to a fourth cylinder (21) for adjusting the air volume of the upper nozzle (7) and the lower nozzle (8); the nozzle outlet lateral baffle (6) is symmetrically mounted on the outer side of the nozzle outlet, and the two ends of the nozzle outlet lateral baffle (6) are respectively connected to the third cylinder (20); the controlled ends of the second cylinder (15), the third cylinder (20) and the fourth cylinder (21) are respectively connected to the output end of the PLC controller.

2. The combined slag air quenching gas nozzle according to claim 1, characterized in that: The two sides of the nozzle movable lifting plate (4) are respectively slidably connected to a plurality of clamping limit plates (14) arranged on the inner sides of the two side plates (3), and the back of the nozzle movable lifting plate (4) is connected to a first cylinder (11) arranged on the mounting bracket (1) and used for adjusting the position of the nozzle movable lifting plate (4); the controlled end of the first cylinder (11) is connected to the output end of the PLC controller.

3. The combined slag air quenching gas nozzle according to claim 1, characterized in that: The side plate (3) is also provided with a first guide assembly for guiding and limiting the nozzle movable lifting plate (4); the first guide assembly comprises a first slide groove (12) and an extension plate (13) slidably mounted with the first slide groove (12); the first slide groove (12) is provided on the side plate (3) and is arranged parallel to the nozzle movable lifting plate (4); the extension plates (13) are respectively arranged on both sides of the nozzle movable lifting plate (4).

4. The combined slag air quenching gas nozzle according to claim 1, characterized in that: The nozzle separation adjustment plate (5) is a flat and long plate structure with an obtuse triangle cross section. One end of the nozzle separation adjustment plate (5) arranged at an acute angle is hinged on the hinge shaft (10) and rotates around the hinge shaft (10) with the acute angle vertex of the end as the center of the circle.

5. The combined slag air quenching gas nozzle according to claim 4, characterized in that: The side plate (3) is provided with a second guide assembly for guiding and limiting the nozzle separation adjustment plate (5); the second guide assembly comprises a second slide groove (16), an upper guide column (17), a third slide groove (18), and a lower guide column (19); the second slide groove (16) and the third slide groove (18) are respectively provided on the side plate (3); the second slide groove (16) is slidably connected to the upper guide column (17); the third slide groove (18) is slidably connected to the lower guide column (19); the upper guide column (17) is provided on both sides of the nozzle separation adjustment plate (5) away from the obtuse angle end, and the upper guide column (17) is connected to the second cylinder (15); the lower guide column (19) is provided on both sides of the nozzle separation adjustment plate (5) close to the obtuse angle end, and the lower guide column (19) and the upper guide column (17) move along the same arc track.

6. The combined slag air quenching gas nozzle according to claim 1, characterized in that: The side plate (3) is also provided with a third guide assembly for guiding and limiting the nozzle air inlet adjustment plate (9); the third guide assembly comprises a movable shaft (23) arranged on both sides of the nozzle air inlet adjustment plate (9); the side plate (3) is provided with a fourth slide groove (22) slidably fitted with the movable shaft (23); the movable shaft (23) is connected to the fourth cylinder (21).

7. The combined slag air quenching gas nozzle according to claim 1, characterized in that: The nozzle outlet lateral baffle (6) adopts a long cylindrical plate structure with a right-angled triangle cross section, wherein the short right-angled side of the right-angled triangle is vertically aligned with the side plate (3) of the nozzle reference fixing plate, and the long right-angled sides of the two nozzle outlet lateral baffles (6) are arranged opposite to each other.

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