A feeding device for vacuum induction melting of titanium alloy powder

Abstract

The present invention relates to the technical field of vacuum induction melting, and specifically to a feeding device for vacuum induction melting of titanium alloy powder, comprising a melting furnace body, a support frame being provided above the melting furnace body, a feeding device being fixedly provided on the support frame, the feeding device comprising a first material bin, a second material bin, a top cover, a first blocking component and a second blocking component, a first feeding pipe being provided at the bottom of the first material bin, at least two first feeding pipes being connected on the outer wall of the first material bin, a second feeding pipe being provided at the bottom of the second material bin, and a second feeding pipe being provided on the top of the top cover being connected to the second material bin. The present invention does not require opening a vacuum chamber to feed titanium metal powder, thereby reducing the reaction time of titanium metal in a crucible, reducing the operation of secondary vacuuming, and reducing the risk of operators being scalded by contact with high temperatures.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum induction melting, in particular to a feeding device for vacuum induction melting of titanium alloy powder. Background Art

[0002] In the prior art, when preparing silver-copper-titanium alloy and silver-copper-titanium silver-copper-titanium-indium alloy powders, the need to re-evacuate the metal causes the heating time to be too long. During this process, it is easy to chemically react with the graphite crucible and the alumina crucible to corrode the crucible, resulting in a reduction in the content of titanium alloy in the liquid alloy or even failing to meet the standard. The content of the atomized powder fails to meet the standard, causing the silver-copper-titanium alloy and silver-copper-titanium silver-copper-titanium-indium alloy powders to fail. Summary of the invention

[0003] In view of this, the purpose of the present invention is to provide a feeding device for vacuum induction melting of titanium alloy powder to solve the problem that metal titanium is easily corroded by chemical reaction with graphite crucible and alumina crucible during heating.

[0004] Based on the above purpose, the present invention provides a feeding device for vacuum induction melting of titanium alloy powder, comprising a melting furnace body, a support frame is provided above the melting furnace body, a feeding device is fixed on the support frame, and the feeding device comprises:

[0005] A first material bin is fixed on the support frame, a first material discharge pipe is provided at the bottom of the first material bin, a free end of the first material discharge pipe is arranged above the feed port of the smelting furnace body, and at least two first feeding pipes are connected and arranged on the outer wall of the first material bin;

[0006] A second material bin is arranged inside the first material bin, a second material discharge pipe is arranged at the bottom of the second material bin, a free end of the second material discharge pipe is arranged inside the first material discharge pipe, and a material discharge cavity is formed between the second material bin and the first material bin;

[0007] A top cover is fixedly mounted on the top of the first silo, the bottom of the top cover is fixedly connected to the top of the second silo, and the top of the top cover is provided with a second feeding pipe connected to the second silo;

[0008] A first material blocking assembly is arranged between the first material bin and the second material bin;

[0009] A second material blocking component is arranged inside the second material bin, and the second material blocking component is transmission-connected to the first material blocking component;

[0010] When the second blocking component blocks the second material discharge pipe, the second feeding pipe is connected to the second material bin for feeding, and the first feeding pipe loses the blocking of the first blocking component and performs the first stage feeding, otherwise, the second stage feeding is performed.

[0011] Preferably, the first blocking component comprises:

[0012] An annular baffle is disposed between the first material bin and the second material bin, and the outer wall of the annular baffle is disposed on the inner wall of the first material bin;

[0013] An annular connecting plate is arranged between the first material bin and the second material bin, and the bottom of the annular connecting plate is fixedly connected to the top of the annular baffle;

[0014] One end of the two guide rods is fixedly connected to the top of the annular connecting plate, and the other end is drivingly connected to the second blocking component.

[0015] Preferably, the second blocking component comprises:

[0016] A material blocking member, arranged inside the second material bin;

[0017] A cylinder is arranged above the top cover, and a telescopic rod of the cylinder passes through the top cover and is fixedly connected to the material blocking member;

[0018] a baffle plate, arranged inside the second silo, the baffle plate being rotatably connected to the bottom of the top cover, the baffle plate being transmission-connected to the telescopic rod of the cylinder, and the baffle plate being provided with a through hole communicating with the second feeding pipe;

[0019] A driving disk is arranged above the top cover, the bottom of the driving disk is fixedly connected to the guide rod, a portion of the driving disk is sleeved on the second feeding pipe, the center of the driving disk is sleeved on the telescopic rod of the cylinder, and the driving disk is transmission-connected to the telescopic rod of the cylinder to enable the driving disk to move up and down.

[0020] Preferably, a threaded structure is provided on the telescopic rod of the cylinder, and a first sleeve and a second sleeve are sleeved on the telescopic rod of the cylinder, the first sleeve and the second sleeve are both threadedly connected to the threaded structure, one end of the first sleeve is rotatably connected to the center of the top cover, and the other end passes through the top cover and is fixedly connected to the top of the baffle plate, and the second sleeve is passed through the center of the drive plate and is rotatably connected.

[0021] Preferably, a fixing plate is fixedly provided on the support frame, and two connecting seats are fixedly provided on the fixing plate, and each of the connecting seats is sleeved on the cylinder and fixedly connected.

[0022] Preferably, a linkage assembly is fixedly provided on the top of the driving disk, the first feeding pipe is sealed at one end away from the first silo, a feeding pipe is connected to the outer wall of the first feeding pipe, a feeding assembly is provided inside the first feeding pipe, and one end of the feeding assembly passes through the sealed end of the first feeding pipe and is transmission-connected to the linkage assembly.

[0023] Preferably, the linkage component comprises:

[0024] A first connecting plate, fixedly mounted on the top of the driving disk;

[0025] Two ratchets are respectively fixed on the feeding assembly;

[0026] Two second connecting plates, one end of which is respectively arranged at one end of the first connecting plate, the top of each second connecting plate is fitted with the bottom of the first connecting plate, one side of each second connecting plate is provided with a plurality of beveled tooth blocks adapted to the ratchet, and the other side of each second connecting plate is respectively hingedly arranged with one end of the first connecting plate;

[0027] In the process of blocking the first feeding pipe, the ratchet wheel and the bevel gear block are not meshed for transmission.

[0028] Preferably, the feeding assembly comprises a spiral blade rod, which is arranged inside the first feeding pipe, and one end of the spiral blade rod passes through the sealing end of the first feeding pipe and is fixedly connected to the ratchet.

[0029] The beneficial effects of the present invention include: no need to open the vacuum chamber to put in titanium metal powder, which reduces the reaction time of titanium metal in the crucible, reduces the secondary vacuum pumping operation, and reduces the risk of operators being burned by high temperature exposure. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0032] Figure 2 It is a schematic diagram of a cross-sectional structure of an embodiment of the present invention;

[0033] Figure 3 It is a schematic diagram of the three-dimensional structure of the first blocking component according to an embodiment of the present invention;

[0034] Figure 4It is a schematic diagram of the planar structure of the ratchet wheel and the helical gear block meshing in an embodiment of the present invention;

[0035] Figure 5 It is a schematic diagram of the three-dimensional structure of the second blocking component according to an embodiment of the present invention.

[0036] The markings in the figure are:

[0037] 1. Melting furnace body; 2. Support frame; 3. First silo; 4. First unloading pipe; 5. First feeding pipe; 6. Second silo; 7. Second unloading pipe; 8. Top cover; 9. Second feeding pipe; 10. Annular baffle; 11. Annular connecting plate; 12. Guide rod; 13. Blocking piece; 14. Cylinder; 15. Baffle plate; 16. Through hole; 17. Drive plate; 18. Threaded structure; 19. First bushing; 20. Second bushing; 21. Fixed plate; 22. Connecting seat; 23. Feeding pipe; 24. First connecting plate; 25. Ratchet; 26. Second connecting plate; 27. Bevel gear block; 28. Helical blade rod. DETAILED DESCRIPTION

[0038] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0039] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0040] like Figures 1 to 5 As shown, a feeding device for vacuum induction melting of titanium alloy powder comprises a melting furnace body 1, a support frame 2 is arranged above the melting furnace body 1, a feeding device is fixed on the support frame 2, and the feeding device comprises:

[0041] A first material bin 3 is fixed on the support frame 2, a first material discharge pipe 4 is provided at the bottom of the first material bin 3, a free end of the first material discharge pipe 4 is arranged above the feed port of the smelting furnace body 1, and at least two first feeding pipes 5 are connected and provided on the outer wall of the first material bin 3;

[0042] A second silo 6 is arranged inside the first silo 3, a second material discharge pipe 7 is arranged at the bottom of the second silo 6, a free end of the second material discharge pipe 7 is arranged inside the first material discharge pipe 4, and a material discharge cavity is formed between the second silo 6 and the first silo 3;

[0043] A top cover 8 is fixedly mounted on the top of the first silo 3, the bottom of the top cover 8 is fixedly connected to the top of the second silo 6, and a second feeding pipe 9 communicating with the second silo 6 is disposed on the top of the top cover 8;

[0044] A first material blocking component is arranged between the first material bin 3 and the second material bin 6;

[0045] A second material blocking component is arranged inside the second material bin 6, and the second material blocking component is transmission-connected to the first material blocking component;

[0046] When the second blocking component blocks the second feed pipe 7, the second feeding pipe 9 is connected to the second silo 6 for feeding, and the first feeding pipe 5 loses the blocking of the first blocking component and performs the first stage feeding, otherwise, the second stage feeding is performed.

[0047] For example, when the second blocking component blocks the second feeding pipe 7, the second feeding pipe 9 is connected to the second silo 6 to feed the titanium metal fragments until the second silo 6 is full, and the first feeding pipe 5 loses the blocking of the first blocking component, and the silver powder and copper powder are fed into the smelting furnace body 1 for induction heating until the temperature in the smelting furnace body 1 reaches the set temperature of 1200 degrees Celsius. The second blocking component receives the drive signal and moves to release the second feeding pipe 7. The titanium metal fragments in the second silo 6 fall into the first feeding pipe 4 through the second feeding pipe 7, and slide from the first feeding pipe 4 to the smelting furnace body 1 to wait for melting. The melting time is controlled within the time of reacting with the crucible of the smelting furnace body 1 for atomization and powder making, and the silver-copper-titanium metal powder is obtained. The composition reaches the silver-copper-titanium powder ratio after instrument detection. At the same time, the first blocking component moves with the second blocking component to block the first feeding pipe 4 to prevent silver powder and copper powder from falling into the smelting furnace body 1 and affecting production.

[0048] As an optional embodiment, the first blocking component includes:

[0049] An annular baffle 10 is disposed between the first silo 3 and the second silo 6, and the outer wall of the annular baffle 10 is disposed on the inner wall of the first silo 3;

[0050] An annular connecting plate 11 is disposed between the first silo 3 and the second silo 6, and the bottom of the annular connecting plate 11 is fixedly connected to the top of the annular baffle 10;

[0051] One end of the two guide rods 12 is fixedly connected to the top of the annular connecting plate 11, and the other end is drivingly connected to the second blocking assembly.

[0052] For example, the second blocking assembly drives the guide rod 12 to move up and down, the guide rod 12 drives the annular connecting plate 11 to move up and down, and the annular connecting plate 11 drives the annular baffle 10 to move up and down, so as to complete the blocking and unblocking work of the first feeding pipe 5.

[0053] As an optional embodiment, the second blocking component includes:

[0054] A material blocking member 13, arranged inside the second material bin 6;

[0055] The cylinder 14 is arranged above the top cover 8, and the telescopic rod of the cylinder 14 passes through the top cover 8 and is fixedly connected to the blocking member 13;

[0056] a baffle plate 15, which is arranged inside the second silo 6, the baffle plate 15 is rotatably connected to the bottom of the top cover 8, the baffle plate 15 is transmission-connected to the telescopic rod of the cylinder 14, and the baffle plate 15 is provided with a through hole 16 which is in communication with the second feeding pipe 9;

[0057] The driving disk 17 is arranged above the top cover 8, the bottom of the driving disk 17 is fixedly connected to the guide rod 12, a part of the driving disk 17 is sleeved on the second feeding pipe 9, the center of the driving disk 17 is sleeved on the telescopic rod of the cylinder 14, and the driving disk 17 is transmission-connected to the telescopic rod of the cylinder 14 so that the driving disk 17 moves up and down.

[0058] As an optional embodiment, a threaded structure 18 is provided on the telescopic rod of the cylinder 14, and a first sleeve 19 and a second sleeve 20 are sleeved on the telescopic rod of the cylinder 14. The first sleeve 19 and the second sleeve 20 are both threadedly connected to the threaded structure 18. One end of the first sleeve 19 is rotatably connected to the center of the top cover 8, and the other end passes through the top cover 8 and is fixedly connected to the top of the baffle plate 15. The second sleeve 20 is passed through the center of the drive plate 17 and is rotatably connected.

[0059] As an optional embodiment, a fixing plate 21 is fixedly provided on the support frame 2 , and two connecting seats 22 are fixedly provided on the fixing plate 21 . Each of the connecting seats 22 is sleeved on the cylinder 14 and fixedly connected.

[0060] For example, the blocking member 13 is a plug or a rubber ball. Here, the rubber ball is taken as an example. The rubber ball is driven up and down by the telescopic rod of the cylinder 14 to complete the blocking and unblocking of the second material discharge pipe 7. At the same time, the telescopic rod of the cylinder 14 is provided with a threaded structure 18 to drive the first sleeve 19 and the second sleeve 20 to work. By driving the first sleeve 19 to rotate, the first sleeve 19 drives the baffle plate 15 to rotate, so that the through hole 16 is aligned with the second material discharge pipe 7 to complete the work of the titanium metal fragments entering the second silo 6, or to close the second material discharge pipe 7 and stop the material discharge work. By driving the second sleeve 20 to rotate, the second sleeve 20 moves up and down due to the threaded structure 18, the second sleeve 20 drives the driving disc 17 to move up and down, the driving disc 17 drives the guide rod 12 to move up and down, the guide rod 12 drives the annular connecting plate 11 to move up and down, and the connecting plate drives the annular baffle 10 to move up and down to complete the blocking and unblocking of the first material discharge pipe 4.

[0061] As an optional embodiment, a linkage assembly is fixedly provided on the top of the driving disk 17, the first feeding pipe 5 is sealed at one end away from the first silo 3, a feeding pipe 23 is connected on the outer wall of the first feeding pipe 5, a feeding assembly is provided inside the first feeding pipe 5, and one end of the feeding assembly passes through the sealed end of the first feeding pipe 5 and is transmission-connected to the linkage assembly.

[0062] As an optional embodiment, the linkage component includes:

[0063] A first connecting plate 24 is fixed on the top of the driving disk 17;

[0064] Two ratchet wheels 25 are respectively fixed on the feeding assembly;

[0065] Two second connecting plates 26, one end of which is respectively arranged at one end of the first connecting plate 24, the top of each second connecting plate 26 is arranged to fit with the bottom of the first connecting plate 24, one side of each second connecting plate 26 is provided with a plurality of beveled tooth blocks 27 adapted to the ratchet 25, and the other side of each second connecting plate 26 is respectively hinged to one end of the first connecting plate 24;

[0066] In the process of blocking the first feeding pipe 5, the ratchet wheel 25 and the bevel gear block 27 are not meshed for transmission.

[0067] As an optional embodiment, the feeding assembly includes a spiral blade rod 28, and the spiral blade rod 28 is arranged inside the first feeding tube 5. One end of the spiral blade rod 28 passes through the sealing end of the first feeding tube 5 and is fixedly connected to the ratchet 25.

[0068] For example, silver powder and copper powder enter the first feeding tube 5 through the feeding tube 23 respectively, and the first connecting plate 24 is driven to move upward by the driving disk 17, and the first connecting plate 24 drives the second connecting plate 26 to move upward. During the unsealing process of the first feeding tube 5, the ratchet 25 is engaged with the bevel tooth block 27 to rotate the ratchet 25, and the ratchet 25 drives the spiral blade rod 28 to rotate, pushing the silver powder and the copper powder from their respective first feeding tubes 5 into the blanking cavity, and sliding through the first unloading pipe 4 to the smelting furnace body 1 for induction heating. When the driving disk 17 drives the first connecting plate 24 to move downward, the first feeding tube 5 is blocked. At this time, the ratchet 25 is not engaged with the bevel tooth block 27, and because the second connecting plate 26 is hinged to the first connecting plate 24, the second connecting plate 26 is avoided by the bevel edge of the ratchet 25 and the bevel tooth block 27. Thereby, the ratchet wheel 25 cannot be rotated, so as to stop the rotation of the spiral blade rod 28 and stop the feeding of the silver powder and the copper powder.

[0069] Those skilled in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the present invention is limited to these examples; under the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes in different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A feeding device for vacuum induction melting of titanium alloy powder, comprising a melting furnace body (1), a support frame (2) is arranged above the melting furnace body (1), and a feeding device is fixedly arranged on the support frame (2), characterized in that: The feeding device comprises: A first material bin (3) is fixedly mounted on the support frame (2), a first material discharge pipe (4) is provided at the bottom of the first material bin (3), a free end of the first material discharge pipe (4) is arranged above the feed inlet of the smelting furnace body (1), and at least two first feeding pipes (5) are connected and arranged on the outer wall of the first material bin (3); A second material bin (6) is arranged inside the first material bin (3), a second material discharge pipe (7) is arranged at the bottom of the second material bin (6), a free end of the second material discharge pipe (7) is arranged inside the first material discharge pipe (4), and a material discharge cavity is formed between the second material bin (6) and the first material bin (3); A top cover (8) is fixedly mounted on the top of the first material bin (3), the bottom of the top cover (8) is fixedly connected to the top of the second material bin (6), and a second feeding pipe (9) communicating with the second material bin (6) is disposed on the top of the top cover (8); A first material blocking component is arranged between the first material bin (3) and the second material bin (6); a second material blocking component, arranged inside the second material bin (6), and the second material blocking component is transmission-connected to the first material blocking component; When the second material blocking component blocks the second material discharge pipe (7), the second feeding pipe (9) is connected to the second material bin (6) to carry out the feeding operation, and the first feeding pipe (5) loses the blocking of the first material blocking component to carry out the first stage of feeding operation, and vice versa, the second stage of feeding operation is carried out.

2. A feeding device for vacuum induction melting of titanium alloy powder according to claim 1, characterized in that: The first blocking component comprises: an annular baffle (10) disposed between the first material bin (3) and the second material bin (6), the outer wall of the annular baffle (10) being arranged in close contact with the inner wall of the first material bin (3); an annular connecting plate (11), arranged between the first material bin (3) and the second material bin (6), the bottom of the annular connecting plate (11) being fixedly connected to the top of the annular baffle (10); Two guide rods (12) have one end fixedly connected to the top of the annular connecting plate (11), and the other end drivingly connected to the second blocking assembly.

3. A feeding device for vacuum induction melting of titanium alloy powder according to claim 2, characterized in that: The second plugging component comprises: A material blocking member (13) is arranged inside the second material bin (6); A cylinder (14) is arranged above the top cover (8), and a telescopic rod of the cylinder (14) passes through the top cover (8) and is fixedly connected to the material blocking member (13); a baffle (15) disposed inside the second material bin (6), the baffle (15) being rotatably connected to the bottom of the top cover (8), the baffle (15) being transmission-connected to the telescopic rod of the cylinder (14), and the baffle (15) being provided with a through hole (16) communicating with the second feeding pipe (9); A driving disk (17) is arranged above the top cover (8), the bottom of the driving disk (17) is fixedly connected to the guide rod (12), a portion of the driving disk (17) is sleeved on the second feeding pipe (9), the center of the driving disk (17) is sleeved on the telescopic rod of the cylinder (14), and the driving disk (17) is transmission-connected to the telescopic rod of the cylinder (14) so ​​that the driving disk (17) moves up and down.

4. A feeding device for vacuum induction melting of titanium alloy powder according to claim 3, characterized in that: The telescopic rod of the cylinder (14) is provided with a threaded structure (18), and the telescopic rod of the cylinder (14) is sleeved with a first shaft sleeve (19) and a second shaft sleeve (20), the first shaft sleeve (19) and the second shaft sleeve (20) are both threadedly connected to the threaded structure (18), one end of the first shaft sleeve (19) is rotatably connected to the center of the top cover (8), and the other end passes through the top cover (8) and is fixedly connected to the top of the baffle (15), and the second shaft sleeve (20) is passed through the center of the driving disk (17) and is rotatably connected.

5. The feeding device for vacuum induction melting of titanium alloy powder according to claim 3, characterized in that: A fixing plate (21) is fixedly provided on the support frame (2), and two connecting seats (22) are fixedly provided on the fixing plate (21). Each of the connecting seats (22) is sleeved on the cylinder (14) and fixedly connected.

6. The feeding device for vacuum induction melting of titanium alloy powder according to claim 3, characterized in that: A linkage assembly is fixedly arranged on the top of the driving disk (17); one end of the first feeding pipe (5) away from the first silo (3) is sealed; a feeding pipe (23) is connected to the outer wall of the first feeding pipe (5); a feeding assembly is arranged inside the first feeding pipe (5); one end of the feeding assembly passes through the sealed end of the first feeding pipe (5) and is transmission-connected to the linkage assembly.

7. A feeding device for vacuum induction melting of titanium alloy powder according to claim 6, characterized in that: The linkage components include: A first connecting plate (24) is fixedly mounted on the top of the driving disk (17); Two ratchet wheels (25) are respectively fixed on the feeding assembly; Two second connecting plates (26), one end of which is respectively arranged on one end of the first connecting plate (24), the top of each second connecting plate (26) is arranged to fit with the bottom of the first connecting plate (24), one side of each second connecting plate (26) is provided with a plurality of beveled tooth blocks (27) adapted to the ratchet (25), and the other side of each second connecting plate (26) is respectively hinged to one end of the first connecting plate (24); In the process of blocking the first feeding pipe (5), the ratchet wheel (25) and the bevel gear block (27) are not meshed for transmission.

8. The feeding device for vacuum induction melting of titanium alloy powder according to claim 7, characterized in that: The feeding assembly comprises a spiral blade rod (28), which is arranged inside the first feeding pipe (5), and one end of the spiral blade rod (28) passes through the sealing end of the first feeding pipe (5) and is fixedly connected to the ratchet (25).

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