A multi-stage metallurgical sintering furnace

Abstract

The utility model discloses a multi -section type metallurgical sintering furnace relates to powder metallurgy sintering technical field, including sintering furnace body, both sides of sintering furnace body are fixedly installed with support, two the support and sintering furnace body are installed with three conveyer belts, the top side and the bottom side inner wall of sintering furnace body are installed with two baffle, two the baffle are located the both sides of intermediate conveyer belt, the fixed mounting of T -shaped blanking plate is installed on the inner wall of sintering furnace body both sides, the multi -section type metallurgical sintering furnace of the application drives the squeegee to and fro movement through moving mechanism, can efficiently push the residue accumulated in the top of T -shaped blanking plate to its both sides edge, avoid the influence of residue accumulation to sintering process, simultaneously with the help of moving mechanism linkage shuttle mechanism, drive the reciprocating sliding of sliding inclined plate in the inclined hole, make the residue on the top of guiding inclined plate along the inclined surface slip to blanking hole successfully, is finally collected by collection box concentrated collection.

Description

Technical Field

[0001] This utility model relates to the field of powder metallurgy sintering technology, and in particular to a multi-stage metallurgical sintering furnace. Background Technology

[0002] Multi-stage metallurgical sintering furnaces are core equipment in the metallurgical industry for achieving segmented drying, sintering, and cooling of materials. Through multiple sets of conveyor belts and different temperature zones within the furnace, they can efficiently complete continuous thermal processing of metal parts or metallurgical raw materials. They are widely used in production scenarios such as precision parts sintering and metal powder forming.

[0003] In the prior art, CN222588119U discloses a powder metallurgy sintering device that can collect residues through a collection box. However, it can only scrape the residues to one side. When there are residues on the other side of the scraper, it is difficult to scrape them off. At the same time, after scraping, the residues are located in the long collection box and are difficult to collect and slide to the designated collection area, which is inconvenient for subsequent processing. Therefore, we propose a multi-stage metallurgical sintering furnace to solve this problem. Utility Model Content

[0004] The purpose of this application is to provide a multi-stage metallurgical sintering furnace to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this application provides the following technical solution: a multi-stage metallurgical sintering furnace, including a sintering furnace body, with supports fixedly installed on both sides of the sintering furnace body, and three conveyor belts installed on the two supports and the sintering furnace body; Two baffles are installed on the inner walls of the top and bottom sides of the sintering furnace body, and the two baffles are located on both sides of the middle conveyor belt. T-shaped material dropping plates are fixedly installed on the inner walls of both sides of the sintering furnace body. The T-shaped material dropping plates are located below the three conveyor belts. An inclined hole is opened on one side of the inner wall of the sintering furnace body, and a sliding inclined plate is slidably installed in the inclined hole. Guide inclined plates are fixedly installed on the inner walls of the other two sides of the sintering furnace body. The bottom of the two guide inclined plates and the T-shaped material dropping plate are in contact with the top of the sliding inclined plate. A scraper is provided above the T-shaped material dropping plate. A moving mechanism is installed on the side of one of the supports. The moving mechanism is installed in cooperation with the scraper. A reciprocating mechanism is installed on the moving mechanism, and the reciprocating mechanism is installed in conjunction with the sliding inclined plate.

[0006] Preferably, the moving mechanism includes a servo motor fixedly installed on the side of the support, a threaded rod fixedly installed on the output shaft of the servo motor, a threaded block threadedly installed on the threaded rod, a U-shaped connecting rod fixedly installed at the bottom of the threaded block, an L-shaped rod fixedly installed at the top of the U-shaped connecting rod, an end of the L-shaped rod away from the U-shaped connecting rod extending into the sintering furnace body and connecting to the top of the scraper, and two guide rods fixedly installed on the inner walls of both sides of the sintering furnace body, with the scraper slidably sleeved on the two guide rods.

[0007] Preferably, the reciprocating mechanism includes two U-shaped slide rods, with a pressing frame fixedly installed on the sides of the two U-shaped slide rods that are close to each other. A groove is formed on the side of the sliding inclined plate near the pressing frame. A cylinder is fixedly installed on the inner walls of both sides of the groove, with one end of the cylinder penetrating the pressing frame. Multiple evenly arranged semicircular blocks are fixedly installed on the side of the U-shaped slide rods near the T-shaped blanking plate. Two mounting plates are fixedly installed on the side of the U-shaped connecting rod. Pressing wheels are fixedly installed on the sides of the two mounting plates that are close to each other, and the two pressing wheels respectively contact the two adjacent semicircular blocks.

[0008] Preferably, the reciprocating mechanism further includes four limiting sleeves, with the two ends of the two U-shaped slide rods slidably installed in the four limiting sleeves respectively. Four springs are sleeved on the U-shaped slide rods, with the two ends of the springs fixedly installed on the sides of the limiting sleeves and the U-shaped slide rods respectively.

[0009] Preferably, the T-shaped material dropping plate has gaps between its two sides along the direction of the threaded rod and the inner walls of both sides of the sintering furnace body.

[0010] Preferably, a U-shaped protective plate is fixedly installed on the conveyor belt, the threaded rod is located inside the U-shaped protective plate, and the threaded block is slidably connected to the inner wall of the U-shaped protective plate.

[0011] Preferably, a conveyor motor is installed on the side of the sintering furnace body and the side of the two conveyor belts. The three conveyor motors are respectively connected to the three conveyor belts. The side of the two baffles is provided with clearance holes, which correspond to the positions of the conveyor belts. Conveyor rollers are rotatably installed in the two clearance holes located at the bottom.

[0012] Preferably, two material discharge holes are provided on the bottom inner wall of the sintering furnace body, and the positions of the material discharge holes correspond to the guide inclined plate and scraper. A baffle hole communicating with the material discharge holes is provided on one inner wall of the sintering furnace body, and a T-shaped sealing plate is provided in the baffle hole. The T-shaped sealing plate is connected to the side of the sintering furnace body by bolts.

[0013] In summary, the technical effects and advantages of this utility model are as follows: The multi-stage metallurgical sintering furnace of this application uses a moving mechanism to drive the scraper to move back and forth, which can efficiently push the residue accumulated on the top of the T-shaped discharge plate to its two side edges, avoiding the accumulation of residue from affecting the sintering process. At the same time, with the help of the moving mechanism linked to the reciprocating mechanism, the sliding inclined plate is driven to slide back and forth in the inclined hole, so that the residue guided by the guide inclined plate to the top of the sliding inclined plate can slide smoothly down the inclined surface to the discharge hole, and finally be collected by the collection box. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A three-dimensional view of a multi-stage metallurgical sintering furnace; Figure 2 A first-view perspective perspective view of the sintering furnace body of a multi-stage metallurgical sintering furnace; Figure 3 A second-view perspective perspective view of the sintering furnace body of a multi-stage metallurgical sintering furnace; Figure 4 A three-dimensional view showing the connection between the T-shaped blanking plate, the sliding inclined plate, the scraper, the guide rod, and the guide inclined plate; Figure 5 A first-person perspective view showing the connection between the moving mechanism and the reciprocating mechanism; Figure 6 A second-view perspective stereoscopic view showing the connection between the moving mechanism and the reciprocating mechanism; Figure 7 for Figure 6 Enlarged view of point A in the middle.

[0016] In the diagram: 1. Sintering furnace body; 2. Conveyor motor; 3. Conveyor belt; 4. Support; 5. T-shaped discharge plate; 6. Baffle; 7. Conveyor roller; 8. Inclined hole; 9. Sliding inclined plate; 10. Discharge hole; 11. T-shaped sealing plate; 12. Scraper; 13. Guide rod; 14. Guide inclined plate; 15. Servo motor; 16. U-shaped protective plate; 17. Threaded rod; 18. Threaded block; 19. U-shaped connecting rod; 20. L-shaped rod; 21. Extrusion wheel; 22. Mounting plate; 23. Semicircular block; 24. Spring; 25. Limiting sleeve; 26. U-shaped sliding rod; 27. Extrusion frame; 28. Cylinder. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1 - Figure 7 The embodiments provided by this utility model are as follows: A multi-stage metallurgical sintering furnace includes a sintering furnace body 1. Supports 4 are fixedly installed on both sides of the sintering furnace body 1. Three conveyor belts 3 are installed on the two supports 4 and the sintering furnace body 1. The sintering furnace body 1 of this application sequentially includes a drying zone, a sintering zone, and a cooling zone. A first heating tube is installed in the drying zone to heat the parts within the drying zone, controlling their temperature between 200-500℃. A second heating tube is installed in the sintering zone to heat the parts within the sintering zone, controlling their temperature between 600-900℃. The cooling system in the cooling zone can use air cooling or water cooling to rapidly cool the parts to approximately 50℃. This is prior art. For reference, see the drying zone, sintering zone, and cooling zone in a segmented sintering furnace disclosed in publication number CN216080940U. The drying zone, sintering zone, and cooling zone correspond to the positions of the three conveyor belts 3, respectively. The three conveyor belts 3 are made of different materials to meet the usage requirements of the drying zone, sintering zone, and cooling zone.

[0019] Two baffles 6 are installed on the inner walls of the top and bottom sides of the sintering furnace body 1, and the two baffles 6 are located on both sides of the middle conveyor belt 3. T-shaped material dropping plates 5 are fixedly installed on the inner walls of both sides of the sintering furnace body 1. The T-shaped material dropping plates 5 are located below the three conveyor belts 3. An inclined hole 8 is opened on one side of the inner wall of the sintering furnace body 1, and a sliding inclined plate 9 is slidably installed in the inclined hole 8. Guide inclined plates 14 are fixedly installed on the inner walls of the other two sides of the sintering furnace body 1. The bottom of the two guide inclined plates 14 and the T-shaped material drop plate 5 are in contact with the top of the sliding inclined plate 9. A scraper 12 is provided above the T-shaped material drop plate 5. A moving mechanism is installed on the side of one of the brackets 4. The moving mechanism is installed in cooperation with the scraper 12. A reciprocating mechanism is installed on the moving mechanism, and the reciprocating mechanism is installed in conjunction with the sliding inclined plate 9.

[0020] like Figure 4 , Figure 5 and Figure 6As shown, the moving mechanism includes a servo motor 15 fixedly installed on the side of the bracket 4. A threaded rod 17 is fixedly installed on the output shaft of the servo motor 15. A threaded block 18 is threadedly installed on the threaded rod 17. A U-shaped connecting rod 19 is fixedly installed at the bottom of the threaded block 18. An L-shaped rod 20 is fixedly installed at the top of the U-shaped connecting rod 19. The end of the L-shaped rod 20 away from the U-shaped connecting rod 19 extends into the sintering furnace body 1 and connects to the top of the scraper 12. Two guide rods 13 are fixedly installed on the inner walls of both sides of the sintering furnace body 1. The scraper 12 is slidably sleeved on the two guide rods 13. By starting the servo motor 15 and making it rotate in both directions, the output shaft of the servo motor 15 rotates in both directions, driving the threaded rod 17 to rotate in both directions. The rotation of the threaded rod 17 drives the threaded block 18 to move back and forth, thereby causing the U-shaped connecting rod 19 and the L-shaped rod 20 to move back and forth, which in turn causes the scraper 12 to move back and forth, thus pushing the residue falling on the top of the T-shaped dropping plate 5 to the two sides of the T-shaped dropping plate 5. Since there is a gap between the edge of the T-shaped dropping plate 5 and the inner wall of the sintering furnace body 1, it falls onto the guide inclined plate 14 and enters the top of the sliding inclined plate 9 through the guide inclined plate 14, so that the residue is located in the channel between the guide inclined plate 14 and the T-shaped dropping plate 5.

[0021] like Figure 6 and Figure 7As shown, the reciprocating mechanism includes two U-shaped slide rods 26. A pressing frame 27 is fixedly installed on the sides of the two U-shaped slide rods 26 that are close to each other. A groove is provided on the side of the sliding inclined plate 9 near the pressing frame 27. A cylinder 28 is fixedly installed on the inner walls of both sides of the groove. One end of the cylinder 28 passes through the pressing frame 27. Multiple evenly arranged semicircular blocks 23 are fixedly installed on the side of the U-shaped slide rods 26 near the T-shaped blanking plate 5. Two mounting plates 22 are fixedly installed on the side of the U-shaped connecting rod 19. Pressing wheels 21 are fixedly installed on the sides of the two mounting plates 22 that are close to each other. The two pressing wheels 21 contact the two adjacent semicircular blocks 23 respectively. The reciprocating mechanism also includes four limiting sleeves 25. The two ends of the two U-shaped slide rods 26 are slidably installed in the four limiting sleeves 25 respectively. Four springs 24 are sleeved on the U-shaped slide rods 26. The two ends of the springs 24 are fixedly installed on the limiting sleeves 25 and the sides of the U-shaped slide rods 26 respectively. As the U-shaped connecting rod 19 moves, it drives the two mounting plates 22 to move. The movement of the two mounting plates 22 drives the two extrusion rollers 21 to move. When the extrusion rollers 21 separate from the semicircular block 23, the spring 24 is in a stretched state. Under the action of the spring 24, the U-shaped sliding rod 26 moves closer to the T-shaped discharge plate 5. When the extrusion rollers 21 extrude the semicircular block 23, the spring 24 is stretched again. Under the extrusion action of the extrusion rollers 21, the U-shaped sliding rods 26 move away from the T-shaped discharge plate 5, thereby causing the two U-shaped sliding rods 26 to move back and forth. The back and forth movement of the U-shaped sliding rods 26 causes the extrusion frame 27 to move back and forth. The back and forth movement of the extrusion frame 27 extrudes the cylinder 28, thereby causing the cylinder 28 to move back and forth. The back and forth movement of the cylinder 28 causes the sliding inclined plate 9 to slide back and forth in the inclined hole 8, thereby causing the residue located at the top of the sliding inclined plate 9 to fall down along the inclined top of the sliding inclined plate 9, and fall into the discharge hole 10 to be collected by the collection box.

[0022] like Figure 6 As shown, the T-shaped discharge plate 5 has gaps between its two sides and the inner walls of the sintering furnace body 1 along the direction of the threaded rod 17. The advantage of this arrangement is that it facilitates the falling of residue from both sides of the T-shaped discharge plate 5.

[0023] like Figure 5 As shown, a U-shaped protective plate 16 is fixedly installed on the conveyor belt 3, and a threaded rod 17 is located inside the U-shaped protective plate 16. A threaded block 18 is slidably connected to the inner wall of the U-shaped protective plate 16. The U-shaped protective plate 16 can protect the threaded rod 17.

[0024] like Figure 1 and Figure 2As shown, conveyor motors 2 are installed on the sides of the sintering furnace body 1 and the sides of the two conveyor belts 3. The three conveyor motors 2 are connected to the three conveyor belts 3 respectively. Both sides of the two baffles 6 have clearance holes corresponding to the positions of the conveyor belts 3. Conveyor rollers 7 are rotatably installed in the two lower clearance holes. The conveyor motors 2 drive the conveyor belts 3, the conveyor rollers 7 facilitate the transfer of materials between the two conveyor belts 3, and the baffles 6 isolate adjacent conveyor belts 3.

[0025] like Figure 3 As shown, two material discharge holes 10 are provided on the inner wall of the bottom side of the sintering furnace body 1. The material discharge holes 10 correspond to the positions of the guide inclined plate 14 and the scraper 12. A baffle hole communicating with the material discharge holes 10 is provided on the inner wall of one side of the sintering furnace body 1. A T-shaped sealing plate 11 is provided in the baffle hole, and the T-shaped sealing plate 11 is connected to the side of the sintering furnace body 1 by bolts. The two material discharge holes 10 facilitate the collection of residue.

[0026] Working principle: During use, the parts are placed on a mesh tray, which is then placed on conveyor belt 3. The parts are dried as they pass through the first conveyor belt 3, sintered as they pass through the second conveyor belt 3, and cooled as they pass through the third conveyor belt 3. During the heating process, due to the high temperature, the additives decompose and volatilize. These substances may accumulate at the top of the furnace, forming crystals. Over time, these crystals gradually increase and may detach on their own. Some of the detached residue will fall onto the top of the T-shaped discharge plate 5. When cleaning is required, the collection box is placed below the discharge hole 10, and the discharge hole 10 can be opened by removing the T-shaped sealing plate 11. By starting the servo motor 15 to make it rotate forward and reverse, the output shaft of the servo motor 15 rotates forward and reverse, driving the threaded rod 17 to rotate forward and reverse. The rotation of the threaded rod 17 drives the threaded block 18 to move back and forth, thereby causing the U-shaped connecting rod 19 and the L-shaped rod 20 to move back and forth, which in turn causes the scraper 12 to move back and forth, thus pushing the residue falling on the top of the T-shaped dropping plate 5 to the two sides of the T-shaped dropping plate 5. Since there is a gap between the edge of the T-shaped dropping plate 5 and the inner wall of the sintering furnace body 1, it falls onto the guide inclined plate 14 and enters the top of the sliding inclined plate 9 through the guide inclined plate 14, so that the residue is located in the channel between the guide inclined plate 14 and the T-shaped dropping plate 5. As the U-shaped connecting rod 19 moves, it drives the two mounting plates 22 to move. The movement of the two mounting plates 22 drives the two extrusion rollers 21 to move. When the extrusion rollers 21 separate from the semicircular block 23, the spring 24 is in a stretched state. Under the action of the spring 24, the U-shaped sliding rod 26 moves closer to the T-shaped discharge plate 5. When the extrusion rollers 21 extrude the semicircular block 23, the spring 24 is stretched again. Under the extrusion action of the extrusion rollers 21, the U-shaped sliding rods 26 move away from the T-shaped discharge plate 5, thereby causing the two U-shaped sliding rods 26 to move back and forth. The back and forth movement of the U-shaped sliding rods 26 causes the extrusion frame 27 to move back and forth. The back and forth movement of the extrusion frame 27 extrudes the cylinder 28, thereby causing the cylinder 28 to move back and forth. The back and forth movement of the cylinder 28 causes the sliding inclined plate 9 to slide back and forth in the inclined hole 8, thereby causing the residue located at the top of the sliding inclined plate 9 to fall down along the inclined top of the sliding inclined plate 9, and fall into the discharge hole 10 to be collected by the collection box.

[0027] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-stage metallurgical sintering furnace, comprising a sintering furnace body (1), characterized in that: Both sides of the sintering furnace body (1) are fixedly installed with brackets (4), and three conveyor belts (3) are installed on the two brackets (4) and the sintering furnace body (1). Two baffles (6) are installed on the inner walls of the top and bottom sides of the sintering furnace body (1), and the two baffles (6) are located on both sides of the intermediate conveyor belt (3). T-shaped material dropping plates (5) are fixedly installed on the inner walls of both sides of the sintering furnace body (1). The T-shaped material dropping plates (5) are located below the three conveyor belts (3). An inclined hole (8) is opened on one side of the inner wall of the sintering furnace body (1). A sliding inclined plate (9) is slidably installed in the inclined hole (8). Guide inclined plates (14) are fixedly installed on the inner walls of the other two sides of the sintering furnace body (1). The bottom of the two guide inclined plates (14) and the T-shaped material drop plate (5) are in contact with the top of the sliding inclined plate (9). A scraper (12) is provided above the T-shaped material drop plate (5). A moving mechanism is installed on the side of one of the brackets (4). The moving mechanism is installed in cooperation with the scraper (12). A reciprocating mechanism is installed on the moving mechanism, and the reciprocating mechanism is installed in conjunction with the sliding inclined plate (9).

2. The multi-stage metallurgical sintering furnace according to claim 1, characterized in that: The moving mechanism includes a servo motor (15) fixedly installed on the side of the bracket (4). The output shaft of the servo motor (15) is fixedly installed with a threaded rod (17). A threaded block (18) is threaded on the threaded rod (17). A U-shaped connecting rod (19) is fixedly installed at the bottom of the threaded block (18). An L-shaped rod (20) is fixedly installed at the top of the U-shaped connecting rod (19). The end of the L-shaped rod (20) away from the U-shaped connecting rod (19) extends into the sintering furnace body (1) and connects to the top of the scraper (12). Two guide rods (13) are fixedly installed on the inner walls of both sides of the sintering furnace body (1). The scraper (12) is slidably sleeved on the two guide rods (13).

3. A multi-stage metallurgical sintering furnace according to claim 2, characterized in that: The reciprocating mechanism includes two U-shaped slide rods (26), and a pressing frame (27) is fixedly installed on the side of the two U-shaped slide rods (26) that are close to each other. The sliding inclined plate (9) has a groove on the side of the pressing frame (27), and a cylinder (28) is fixedly installed on the inner wall of both sides of the groove. One end of the cylinder (28) passes through the pressing frame (27). A plurality of evenly arranged semi-circular blocks (23) are fixedly installed on the side of the U-shaped slide rod (26) that is close to the T-shaped blanking plate (5). Two mounting plates (22) are fixedly installed on the side of the U-shaped connecting rod (19). A pressing wheel (21) is fixedly installed on the side of the two mounting plates (22) that are close to each other. The two pressing wheels (21) are in contact with the two adjacent semi-circular blocks (23) respectively.

4. A multi-stage metallurgical sintering furnace according to claim 3, characterized in that: The reciprocating mechanism also includes four limiting sleeves (25), and the two ends of the two U-shaped slide rods (26) are slidably installed in the four limiting sleeves (25). Four springs (24) are sleeved on the U-shaped slide rods (26), and the two ends of the springs (24) are fixedly installed on the sides of the limiting sleeves (25) and the U-shaped slide rods (26).

5. A multi-stage metallurgical sintering furnace according to claim 1, characterized in that: The T-shaped material drop plate (5) has gaps between its two sides along the direction of the threaded rod (17) and the inner walls of both sides of the sintering furnace body (1).

6. A multi-stage metallurgical sintering furnace according to claim 2, characterized in that: A U-shaped protective plate (16) is fixedly installed on the conveyor belt (3), the threaded rod (17) is located inside the U-shaped protective plate (16), and the threaded block (18) is slidably connected to the inner wall of the U-shaped protective plate (16).

7. A multi-stage metallurgical sintering furnace according to claim 1, characterized in that: The sintering furnace body (1) and the two conveyor belts (3) are equipped with conveyor motors (2). The three conveyor motors (2) are connected to the three conveyor belts (3) respectively. The two baffles (6) are provided with clearance holes on their sides. The clearance holes correspond to the positions of the conveyor belts (3). The two clearance holes located below are rotatably installed with conveyor rollers (7).

8. A multi-stage metallurgical sintering furnace according to claim 1, characterized in that: Two material discharge holes (10) are provided on the bottom inner wall of the sintering furnace body (1). The material discharge holes (10) are corresponding to the positions of the guide inclined plate (14) and the scraper (12). A baffle hole communicating with the material discharge holes (10) is provided on one side inner wall of the sintering furnace body (1). A T-shaped sealing plate (11) is provided in the baffle hole. The T-shaped sealing plate (11) is connected to the side of the sintering furnace body (1) by bolts.

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