A kind of metal powder smelting production exhaust device

Abstract

The utility model discloses a kind of air extraction devices for metal powder smelting production, including extraction cover, the top of the extraction cover is provided with height adjusting mechanism, the top of the height adjusting mechanism is fixedly connected with the powder collection mechanism of the metal powder filtration by second connecting pipe, the top of the powder collection mechanism is fixedly connected with the sealed backflow prevention mechanism by first connecting pipe.The extraction cover set can seal the top of smelting furnace, and the height adjusting mechanism set can adjust the bottom height of extraction cover, it is convenient to put metal powder into smelting furnace inside, then external extraction mechanism is communicated with sealed backflow prevention mechanism, so it can smelting furnace vacuum, and the powder collection mechanism set when gas extraction can be concentrated to the powder of flying gas collection, prevent powder waste, and the sealed backflow prevention mechanism set can increase mechanical backflow, so it can prevent external gas backflow to smelting furnace inside.

Description

Technical Field

[0001] This utility model relates to the field of metal powder processing technology, specifically to a vacuum device for metal powder smelting production. Background Technology

[0002] Metal powder smelting production generally refers to the process of manufacturing parts or materials by heating and melting or partially melting metal powders. This is particularly important in the fields of additive manufacturing (3D printing) and powder metallurgy.

[0003] Vacuuming is required during metal powder smelting. This evacuation is mainly used to control the atmosphere of the working environment, ensuring product quality and process stability. However, the evacuation process generates suction, which can cause powder to fly up, resulting in resource waste. Furthermore, simply stopping the evacuation or sealing it with a one-way valve after evacuation can easily cause gas backflow, affecting the quality of the smelting process. Therefore, we propose an evacuation device for metal powder smelting production. Utility Model Content

[0004] The purpose of this invention is to provide a vacuum device for metal powder smelting production to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a gas extraction device for metal powder smelting production, comprising an extraction cover, a height adjustment mechanism, a powder collection mechanism, and a sealing anti-backflow mechanism. The top of the extraction cover is provided with a height adjustment mechanism for adjusting the height of the bottom of the extraction cover. The top of the height adjustment mechanism is fixedly connected to a powder collection mechanism for filtering metal powder via a second connecting pipe. The top of the powder collection mechanism is fixedly connected to a first connecting pipe, and the top of the first connecting pipe is fixedly connected to a sealing anti-backflow mechanism to prevent gas from flowing back into the extraction cover.

[0006] Furthermore, the height adjustment mechanism includes a fixed plate, a telescopic tube, and a first drive cylinder. The top of the extraction cover is connected to the bottom of the second connecting tube through the telescopic tube. Fixed plates are fixedly installed on the outside of both the extraction cover and the second connecting tube. Two sets of first drive cylinders are fixedly installed on the bottom of the fixed plate on the second connecting tube. The output end of the first drive cylinder is fixedly connected to another set of the fixed plates.

[0007] Furthermore, the powder collection mechanism includes a first extraction tube, a second extraction tube, a threaded mounting tube, a sealing tube, a threaded connecting sleeve, and a filter tube. The top of the second connecting tube is fixedly connected to the first extraction tube. A threaded mounting tube is provided on one side of the first and second extraction tubes. The sealing tube is threadedly connected to the inside of the threaded mounting tube. A threaded connecting sleeve connected to the first extraction tube is provided inside the first extraction tube. The filter tube is threadedly connected to the inside of the threaded connecting sleeve. One end of the second extraction tube is connected to the gap between the filter tube and the sealing tube.

[0008] Furthermore, the sealing anti-backflow mechanism includes a guide pipe, a third connecting pipe, an elastic connecting hose, a sealing frame, and a second driving cylinder. The top of the guide pipe is fixedly connected to the third connecting pipe through the elastic connecting hose. A sealing frame is fixedly installed on the outside of the third connecting pipe and the guide pipe. A pad with one side set as an arc is fixedly connected inside the sealing frame and on one side of the elastic connecting hose. A second driving cylinder is fixedly connected inside the sealing frame and on the other side of the elastic connecting hose. A squeezing block is fixedly connected to the output end of the second driving cylinder.

[0009] Furthermore, a sealing ring made of ceramic fiber is fixedly connected to the bottom of the extraction cover.

[0010] Furthermore, the opposite sides of the pad block and the extrusion block are covered with cushioning pads made of rubber material.

[0011] Compared with the prior art, the present invention has the following advantages: the extraction cover provided by the present invention can seal the top of the smelting furnace, and the height adjustment mechanism can adjust the bottom height of the extraction cover, making it convenient to put metal powder into the smelting furnace. Then, the external extraction mechanism is connected with the sealing anti-backflow mechanism, so that the smelting furnace can be evacuated. During gas extraction, the powder collection mechanism can collect the powder flying into the gas, preventing powder waste. Moreover, the sealing anti-backflow mechanism can increase mechanical anti-backflow, thereby preventing external gas from flowing back into the smelting furnace. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a three-dimensional structural schematic diagram of the powder collection mechanism of this utility model; Figure 3 This is a three-dimensional structural diagram of the sealing and anti-backflow mechanism of this utility model.

[0013] In the diagram: 1. Extraction cover; 2. Sealing ring; 3. Height adjustment mechanism; 4. Powder collection mechanism; 5. First connecting pipe; 6. Sealing anti-backflow mechanism; 7. Second connecting pipe; 8. Fixing plate; 9. Telescopic pipe; 10. First drive cylinder; 11. First extraction pipe; 12. Second extraction pipe; 13. Threaded mounting pipe; 14. Sealing pipe; 15. Threaded connecting sleeve; 16. Filter pipe; 17. Guide pipe; 18. Third connecting pipe; 19. Flexible connecting hose; 20. Sealing frame; 21. Pad; 22. Second drive cylinder; 23. Extrusion block. Detailed Implementation

[0014] 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.

[0015] Please see Figures 1-3 This utility model provides a technical solution: a gas extraction device for metal powder smelting production, including an extraction cover 1, a height adjustment mechanism 3, a powder collection mechanism 4, and a sealing anti-backflow mechanism 6. The top of the extraction cover 1 is provided with a height adjustment mechanism 3 for adjusting the height of the bottom of the extraction cover 1. The top of the height adjustment mechanism 3 is fixedly connected to the powder collection mechanism 4 for filtering metal powder through a second connecting pipe 7. The top of the powder collection mechanism 4 is fixedly connected to a first connecting pipe 5. The top of the first connecting pipe 5 is fixedly connected to the sealing anti-backflow mechanism 6 to prevent gas from flowing back into the extraction cover 1.

[0016] The extraction cover 1 can seal the top of the smelting furnace, and the height adjustment mechanism 3 can adjust the bottom height of the extraction cover 1 to facilitate the placement of metal powder into the smelting furnace. Then, the external extraction mechanism is connected to the sealing anti-backflow mechanism 6, so that the smelting furnace can be evacuated. During gas extraction, the powder collection mechanism 4 can collect the powder in the gas to prevent powder waste. The sealing anti-backflow mechanism 6 can increase mechanical anti-backflow, thereby preventing external gas from flowing back into the smelting furnace.

[0017] Please see Figures 1-3The height adjustment mechanism 3 includes a fixed plate 8, a telescopic tube 9, and a first drive cylinder 10. The top of the extraction cover 1 is connected to the bottom of the second connecting tube 7 through the telescopic tube 9. Fixed plates 8 are fixedly installed on the outside of both the extraction cover 1 and the second connecting tube 7. Two sets of first drive cylinders 10 are fixedly installed on the bottom of the fixed plate 8 on the second connecting tube 7. The output end of the first drive cylinder 10 is fixedly connected to another set of fixed plates 8. A sealing ring 2 made of ceramic fiber is fixedly connected to the bottom of the extraction cover 1.

[0018] Among them, the sealing ring 2 made of ceramic fiber can withstand high temperature and prevent gaps from appearing between the smelting furnace and the extraction cover 1. When it is necessary to raise the height of the extraction cover 1, the first drive cylinder 10 operates and can pull the fixed plate 8 and the extraction cover 1 to rise. The telescopic pipe 9 set between the extraction cover 1 and the second connecting pipe 7 can facilitate the evacuation process when the extraction cover 1 is raised.

[0019] Please see Figure 1 and Figure 2 The powder collection mechanism 4 includes a first extraction tube 11, a second extraction tube 12, a threaded mounting tube 13, a sealing tube 14, a threaded connecting sleeve 15, and a filter tube 16. The top of the second connecting tube 7 is fixedly connected to the first extraction tube 11. The threaded mounting tube 13 is provided on one side of the first extraction tube 11 and the second extraction tube 12. The sealing tube 14 is threadedly connected inside the threaded mounting tube 13. The threaded connecting sleeve 15 is provided inside the first extraction tube 11 and is connected to the first extraction tube 11. The filter tube 16 is threadedly connected inside the threaded connecting sleeve 15. One end of the second extraction tube 12 is connected to the gap between the filter tube 16 and the sealing tube 14.

[0020] When the gas is extracted using the extraction mechanism, the gas inside the smelting furnace enters the filter tube 16 through the first extraction pipe 11 and the threaded connecting sleeve 15 for powder filtration. After filtration, the gas can be extracted through the gap between the filter tube 16 and the sealing pipe 14 and the second extraction pipe 12. The sealing pipe 14 and the filter tube 16 are connected to the threaded mounting pipe 13 and the threaded connecting sleeve 15, which facilitates the disassembly and maintenance of the filter tube 16 and the sealing pipe 14.

[0021] Please see Figure 1 and Figure 3The sealing anti-backflow mechanism 6 includes a guide pipe 17, a third connecting pipe 18, an elastic connecting hose 19, a sealing frame 20, and a second driving cylinder 22. The top of the guide pipe 17 is fixedly connected to the third connecting pipe 18 through the elastic connecting hose 19. A sealing frame 20 is fixedly installed on the outside of the third connecting pipe 18 and the guide pipe 17. A pad 21 with one side set as arc is fixedly connected inside the sealing frame 20 and on one side of the elastic connecting hose 19. A second driving cylinder 22 is fixedly connected inside the sealing frame 20 and on the other side of the elastic connecting hose 19. A squeezing block 23 is fixedly connected to the output end of the second driving cylinder 22. A buffer pad made of rubber material is laid on the opposite sides of the pad 21 and the squeezing block 23.

[0022] After the vacuuming is completed, the second drive cylinder 22 drives the extrusion block 23 to move to one side of the pad block 21. This pushes and squeezes the elastic connecting hose 19 between the extrusion block 23 and the pad block 21, thereby sealing the elastic connecting hose 19 and preventing gas backflow by using mechanical force.

[0023] In use, firstly, the extraction cover 1 seals the top of the smelting furnace, and the height adjustment mechanism 3 adjusts the bottom height of the extraction cover 1 to facilitate the placement of metal powder into the smelting furnace. Then, the external extraction mechanism connects with the sealing anti-backflow mechanism 6, allowing for vacuuming of the smelting furnace. During gas extraction, the powder collection mechanism 4 collects any flying powder, preventing waste. The sealing anti-backflow mechanism 6 further enhances mechanical anti-backflow, preventing external gas from flowing back into the smelting furnace. The ceramic fiber sealing ring 2 is heat-resistant and prevents gaps between the smelting furnace and the extraction cover 1. When the extraction cover 1 needs to be raised, the first drive cylinder 10 operates, pulling the fixed plate 8 and the extraction cover 1 upwards. The telescopic tube 9 between the two connecting pipes 7 allows for convenient evacuation when the extraction cover 1 is lifted. When the evacuation mechanism is used, the gas inside the smelting furnace enters the filter tube 16 through the first extraction tube 11 and the threaded connecting sleeve 15 for powder filtration. After filtration, the gas can be extracted through the gap between the filter tube 16 and the sealing tube 14 and the second extraction tube 12. The sealing tube 14 and the filter tube 16 are connected to the threaded mounting tube 13 and the threaded connecting sleeve 15, which facilitates the disassembly and maintenance of the filter tube 16 and the sealing tube 14. After the vacuum is completed, the second drive cylinder 22 drives the extrusion block 23 to move to one side of the pad block 21, which pushes and squeezes the elastic connecting hose 19 between the extrusion block 23 and the pad block 21, thereby sealing the elastic connecting hose 19 and preventing gas backflow by using mechanical force.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vacuum device for metal powder smelting production, comprising an extraction cover (1), a height adjustment mechanism (3), a powder collection mechanism (4), and a sealing and anti-backflow mechanism (6), characterized in that: The top of the extraction cover (1) is provided with a height adjustment mechanism (3) for adjusting the height of the bottom of the extraction cover (1). The top of the height adjustment mechanism (3) is fixedly connected to a powder collection mechanism (4) for filtering metal powder through a second connecting pipe (7). The top of the powder collection mechanism (4) is fixedly connected to a first connecting pipe (5). The top of the first connecting pipe (5) is fixedly connected to a sealing anti-backflow mechanism (6) to prevent gas from flowing back into the extraction cover (1).

2. The gas extraction device for metal powder smelting production according to claim 1, characterized in that: The height adjustment mechanism (3) includes a fixed plate (8), a telescopic tube (9) and a first drive cylinder (10). The top of the extraction cover (1) is connected to the bottom of the second connecting tube (7) through the telescopic tube (9). Fixed plates (8) are fixedly installed on the outside of both the extraction cover (1) and the second connecting tube (7). Two sets of first drive cylinders (10) are fixedly installed on the bottom of the fixed plate (8) on the second connecting tube (7). The output end of the first drive cylinder (10) is fixedly connected to another set of fixed plates (8).

3. The gas extraction device for metal powder smelting production according to claim 2, characterized in that: The powder collection mechanism (4) includes a first extraction tube (11), a second extraction tube (12), a threaded mounting tube (13), a sealing tube (14), a threaded connecting sleeve (15), and a filter tube (16). The top of the second connecting tube (7) is fixedly connected to the first extraction tube (11). A threaded mounting tube (13) is provided on one side of the first extraction tube (11) and the second extraction tube (12). The sealing tube (14) is threadedly connected inside the threaded mounting tube (13). A threaded connecting sleeve (15) is provided inside the first extraction tube (11) and is connected to the first extraction tube (11). The filter tube (16) is threadedly connected inside the threaded connecting sleeve (15). One end of the second extraction tube (12) is connected to the gap between the filter tube (16) and the sealing tube (14).

4. The gas extraction device for metal powder smelting production according to claim 3, characterized in that: The sealing anti-backflow mechanism (6) includes a guide pipe (17), a third connecting pipe (18), an elastic connecting hose (19), a sealing frame (20), and a second driving cylinder (22). The top of the guide pipe (17) is fixedly connected to the third connecting pipe (18) through the elastic connecting hose (19). A sealing frame (20) is fixedly installed on the outside of the third connecting pipe (18) and the guide pipe (17). A pad (21) with one side set as arc is fixedly connected inside the sealing frame (20) and on one side of the elastic connecting hose (19). A second driving cylinder (22) is fixedly connected inside the sealing frame (20) and on the other side of the elastic connecting hose (19). A squeezing block (23) is fixedly connected to the output end of the second driving cylinder (22).

5. The gas extraction device for metal powder smelting production according to claim 4, characterized in that: A sealing ring (2) made of ceramic fiber is fixedly connected to the bottom of the extraction cover (1).

6. The gas extraction device for metal powder smelting production according to claim 4, characterized in that: Both the pad (21) and the extrusion block (23) are covered with a cushioning pad made of rubber material on opposite sides.

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