A vacuum induction furnace material bridge removal device and method

Abstract

The present invention discloses a device and method for removing material bridges in a vacuum induction furnace, and relates to the technical field of device for removing material bridges. A device for removing material bridges in a vacuum induction furnace comprises a charging bin, and also comprises: the charging bin comprises a vertical cylinder portion, a conical portion, and a discharging portion connected in sequence; a conical rotating member, rotatably arranged at the conical portion of the charging bin, the conical rotating member is used to move the material in the charging bin when rotating; a gas driving component, arranged on the charging bin, and used to drive the conical rotating member to rotate; the present invention rotates the conical rotating member to move the material close to the conical portion, and through the arrangement of a tangential pressure pipe, a spiral downward airflow is generated to intermittently move the material, and when the tangential pressure pipe approaches the air outlet, a collision airflow is formed to disturb the material, thereby avoiding the problem of bridging and stratification of the material in the charging bin, and achieving the effect of removing material bridges.

Description

Technical Field

[0001] The invention belongs to the technical field of material bridge removal devices, and in particular relates to a vacuum induction furnace material bridge removal device. Background Art

[0002] Vacuum induction melting furnace is a complete set of vacuum smelting equipment that uses electromagnetic induction to generate eddy currents in metal conductors to heat the charge for smelting, thus melting the metal.

[0003] In the process of feeding the smelting furnace, the materials are usually dumped into the charging bin first, and then discharged into the smelting furnace by opening the valve at the end of the charging bin. However, different materials have different characteristics, such as particle size, moisture, viscosity, time in the charging bin, etc., which may cause tower bridges and bridges in the process of unloading (refer to Fig.11 ), stratification (refer to Fig.12 ), and then the problem of no material discharge or poor material discharge occurs at the discharge port. Therefore, a vacuum induction furnace material bridge removal device is proposed. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a vacuum induction furnace material bridging removal device that can overcome the above problems or at least partially solve the above problems.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: a vacuum induction furnace material bridging removal device, including a charging bin, and also including: the charging bin includes a vertical cylinder part, a conical part, and a discharge part connected in sequence; a conical rotating part, rotatably arranged at the conical part of the charging bin, and the conical rotating part is used to move the material in the charging bin during rotation; a gas drive assembly, arranged on the charging bin, to drive the conical rotating part to rotate; a conical material valve, arranged in the discharge part, when the conical valve head of the conical material valve rises, the conical part is connected to the discharge part, and when the conical valve head of the conical material valve descends, the conical part is disconnected from the discharge part.

[0006] Preferably, a mounting cavity is formed on the conical portion, and an air inlet pipe and an air outlet pipe are fixedly connected to the conical portion respectively. A blade group is fixedly connected to the outer circumference of the conical rotating member. When the air inlet pipe tangentially intakes air into the mounting cavity, the conical rotating member is driven to rotate.

[0007] Furthermore, a plurality of friction particles are fixedly connected to the inner wall of the conical rotating member, and the friction particles are in a convex shape.

[0008] Furthermore, a plurality of tangential pressure tubes are fixedly connected to the outer circumference of the conical rotating part, the tangential pressure tubes are tangent to the conical rotating part, the two ends of the tangential pressure tubes are respectively connected to the loading bin and the installation cavity, and the end of the tangential pressure tube leading to the conical rotating part is inclined downward; when the gas pressure in the installation cavity reaches the pressure threshold set by the tangential pressure tube, the gas in the installation cavity enters the loading bin tangentially through the tangential pressure tube.

[0009] Preferably, a folding ear is provided at the top of the conical rotating member, a connecting ring is fixedly connected to the inner wall of the vertical cylinder part of the loading bin, the folding ear is located in the connecting ring, and an extension protrusion is provided on the outer periphery of the end of the conical rotating member, and the extension protrusion rotates in a rotating groove opened on the inner wall of the conical part.

[0010] Furthermore, a vertical rod is symmetrically fixedly connected to the conical valve head of the conical material valve, a cross rod is slidably connected to the vertical rod, a spring is connected between the cross rod and the top of the vertical rod, a clamping block is fixedly connected to the end of the cross rod away from the vertical rod, and the clamping block is close to the inner wall of the conical rotating part.

[0011] Furthermore, a ball is embedded and rollingly connected on one surface of the pressing block close to the inner wall of the conical rotating member, so that a material flow gap is formed between the pressing block and the inner wall of the conical rotating member.

[0012] Furthermore, an air outlet is provided on a surface of the pressing block opposite to the rotating direction of the conical rotating member, so as to form a convection collision when the tangential pressure pipe sprays air into the charging bin.

[0013] Preferably, a first air duct is opened in the vertical pole, one end of the first air duct passes through the outer periphery of the vertical pole, a limiting sleeve is fixedly connected to the conical valve head, the limiting sleeve is arranged on the vertical pole, and a second air duct is opened on the cross bar, one end of the second air duct is connected to the air outlet, and the other end of the second air duct corresponds to the first air duct.

[0014] A method for removing material bridges in a vacuum induction furnace mainly comprises the following steps:

[0015] S1. The air inlet pipe takes air into the installation cavity and discharges it from the air outlet pipe. The gas entering the installation cavity drives the conical rotating part to rotate in the loading bin, and the material in the loading bin moves when the conical rotating part rotates;

[0016] S2. After the gas pressure in the installation cavity increases, it enters the loading bin through the tangential pressure pipe and generates a spiral downward airflow, which intermittently moves the material;

[0017] S3. The conical valve head rises, and the air outlet jets out. When the tangential pressure pipe approaches the air outlet, a collision airflow is formed to disturb the material, thereby clearing the material bridge.

[0018] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0019] 1. The vacuum induction furnace material bridge removal device rotates the conical rotating part to move the material near the conical part, and generates a spiral downward airflow through the tangential pressure pipe to intermittently move the material. When the tangential pressure pipe approaches the air outlet, a collision airflow is formed to disturb the material, thereby avoiding the problem of bridging and stratification of the material in the charging bin, and achieving the effect of clearing the material bridge.

[0020] 2. The material bridge removal device of the vacuum induction furnace has convex friction particles arranged on the inner wall of the conical rotating part. Therefore, when the conical rotating part rotates, it will further drive the material in the charging bin to move, so that the material movement range is increased. Therefore, the device can avoid the material bridge and stratification in the charging bin. Due to the setting of the conical rotating part, it also avoids occupying too much area in the charging bin, so that the storage space in the charging bin is basically unchanged;

[0021] 3. The vacuum induction furnace material bridge removal device is installed so that the gas in the cavity is sprayed into the charging bin through the tangential pressure pipe. Since the tangential pressure pipe is tangential to the conical rotating part, the sprayed gas will spirally rotate downward along the inner wall of the conical rotating part. Since the tangential pressure pipe is intermittently exhausted into the charging bin, the material in the charging bin can be driven to move intermittently, further avoiding the material bridging and stratification in the charging bin.

[0022] 4. The material bridging removal device of the vacuum induction furnace, when the conical valve head rises, the vertical rod will rise together, so that one end of the first airway is opposite to the second airway, and the gas in the second airway enters the first airway and is discharged from the air outlet. This makes the tangential pressure pipe on the conical rotating part approach the air outlet, and the two ejected air flows collide with each other, further disturbing the material, which can effectively avoid bridging and stratification of the material in the loading bin. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In the attached picture:

[0024] Figure 1 A schematic diagram of the three-dimensional structure of a vacuum induction furnace material bridge removal device proposed by the present invention;

[0025] Figure 2 A top view of a device for removing material bridges in a vacuum induction furnace proposed by the present invention;

[0026] Figure 3 A schematic diagram of the structure of a blade group of a material bridge removal device for a vacuum induction furnace proposed by the present invention;

[0027] Figure 4 A schematic diagram of the structure of a tangential pressure tube and friction particles of a vacuum induction furnace material bridge removal device proposed by the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of the installation chamber of a vacuum induction furnace material bridge removal device proposed by the present invention;

[0029] Figure 6 This is a schematic structural diagram of a conical portion of a vacuum induction furnace material bridge removal device proposed by the present invention;

[0030] Figure 7 A vacuum induction furnace material bridge removal device proposed by the present invention Figure 6 The structural diagram at A in the middle;

[0031] Figure 8 A schematic structural diagram of a conical rotating member of a material bridge removal device for a vacuum induction furnace proposed by the present invention;

[0032] Fig. 9 A schematic diagram of the structure of a tangential pressure tube of a material bridge removal device for a vacuum induction furnace proposed by the present invention;

[0033] Fig.10 A schematic structural diagram of a conical valve head of a material bridge removal device for a vacuum induction furnace proposed by the present invention;

[0034] Fig.11 It is a schematic diagram of the bridging phenomenon;

[0035] Fig.12 Schematic diagram of the stratification phenomenon.

[0036] In the figure: 1. loading bin; 10. vertical cylinder; 100. air inlet pipe; 1000. air outlet pipe; 11. conical part; 12. discharge part; 13. mounting cavity; 14. conical rotating part; 140. blade group; 141. folding ear; 142. connecting ring; 143. extension protrusion; 144. friction particles; 145. tangential pressure pipe; 2. conical material valve; 20. conical valve head; 21. vertical rod; 22. cross rod; 23. clamping block; 24. spring; 25. air outlet; 26. first air duct; 27. second air duct; 28. ball; 29. ​​limit sleeve. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0038] Example 1: Reference Figure 1-Figure 10 A vacuum induction furnace material bridge removal device comprises a charging bin 1, and further comprises: the charging bin 1 comprises a vertical cylinder portion 10, a conical portion 11, and a discharge portion 12 which are connected in sequence; a conical rotating member 14, which is rotatably arranged at the conical portion 11 of the charging bin 1, and the conical rotating member 14 is used to move the material in the charging bin 1 when rotating; a gas driving component, which is arranged on the charging bin 1, and is used to drive the conical rotating member 14 to rotate; a conical material valve 2, which is arranged in the discharge portion 12, when the conical valve head 20 of the conical material valve 2 rises, the conical portion 11 is connected with the discharge portion 12, and when the conical valve head 20 of the conical material valve 2 falls, the conical portion 11 is disconnected from the discharge portion 12;

[0039] The conical part 11 is formed with a mounting cavity 13, and the conical part 11 is respectively fixedly connected with an air inlet pipe 100 and an air outlet pipe 1000, and a blade group 140 is fixedly connected to the outer circumference of the conical rotating member 14. When the air inlet pipe 100 tangentially inhales air into the mounting cavity 13, the conical rotating member 14 is driven to rotate;

[0040] A plurality of friction particles 144 are fixedly connected to the inner wall of the conical rotating member 14, and the friction particles 144 are convex;

[0041] Reference Figure 1-Figure 10 A vacuum induction furnace material bridge removal device includes a charging bin 1, and also includes: the charging bin 1 includes a vertical cylinder portion 10, a conical portion 11, and a discharge portion 12 connected in sequence; a conical rotating member 14, which is rotatably arranged at the conical portion 11 of the charging bin 1, and the conical rotating member 14 is used to move the material in the charging bin 1 when rotating; a gas drive component, which is arranged on the charging bin 1, to drive the conical rotating member 14 to rotate; a conical material valve 2, which is arranged in the discharge portion 12, when the conical valve head 20 of the conical material valve 2 rises, the conical portion 11 is connected to the discharge portion 12, and when the conical material valve 2 is raised, the conical portion 11 is connected to the discharge portion 12, and when the conical material valve 2 is raised, the conical portion 11 is connected to the discharge portion 12. When the conical valve head 20 of the valve 2 descends, the conical portion 11 is disconnected from the discharge portion 12; a plurality of tangential pressure pipes 145 are fixedly connected to the outer circumference of the conical rotating member 14, the tangential pressure pipes 145 are tangential to the conical rotating member 14, the two ends of the tangential pressure pipes 145 are respectively connected to the charging bin 1 and the installation cavity 13, and the end of the tangential pressure pipe 145 leading to the conical rotating member 14 is inclined downward; when the gas pressure in the installation cavity 13 reaches the pressure threshold set by the tangential pressure pipe 145, the gas in the installation cavity 13 enters the charging bin 1 tangentially through the tangential pressure pipe 145;

[0042] A folding ear 141 is provided at the top of the conical rotating member 14, a connecting ring 142 is fixedly connected to the inner wall of the vertical cylinder portion 10 of the loading bin 1, the folding ear 141 is located in the connecting ring 142, and an extending protrusion 143 is provided on the outer periphery of the end of the conical rotating member 14, and the extending protrusion 143 rotates in a rotating groove opened on the inner wall of the conical portion 11;

[0043] A vertical rod 21 is symmetrically fixedly connected to the conical valve head 20 of the conical material valve 2, a cross rod 22 is slidably connected to the vertical rod 21, a spring 24 is connected between the cross rod 22 and the top of the vertical rod 21, and a clamping block 23 is fixedly connected to the end of the cross rod 22 away from the vertical rod 21, and the clamping block 23 is close to the inner wall of the conical rotating member 14;

[0044] A ball 28 is embedded and rollingly connected on one side of the pressing block 23 close to the inner wall of the conical rotating member 14, so that a material flow gap is formed between the pressing block 23 and the inner wall of the conical rotating member 14;

[0045] An air outlet 25 is provided on one side of the pressing block 23 opposite to the rotating direction of the conical rotating member 14, so as to form a convection collision when the tangential pressure pipe 145 sprays air into the charging bin 1;

[0046] A first air passage 26 is provided in the vertical rod 21, one end of the first air passage 26 passes through the outer periphery of the vertical rod 21, a limiting sleeve 29 is fixedly connected to the conical valve head 20, the limiting sleeve 29 is sleeved on the vertical rod 21, a second air passage 27 is provided on the cross bar 22, one end of the second air passage 27 is connected to the air outlet 25, and the other end of the second air passage 27 corresponds to the first air passage 26;

[0047] When the device is in use, after pouring the material into the charging bin 1, air is blown into the installation cavity 13 through the air inlet pipe 100 toward the blade assembly 140, so that the conical rotating member 14 is forced to rotate. Since the conical rotating member 14 is close to the conical portion 11 of the charging bin 1, when the conical rotating member 14 rotates, the material near the conical portion 11 will move, thereby avoiding the problem of bridging and stratification of the material in the charging bin 1.

[0048] At the same time, the friction particles 144 arranged on the inner wall of the conical rotating member 14 are convex, so when the conical rotating member 14 rotates, it will further drive the material in the loading bin 1 to move, so that the material movement range is increased. Therefore, the device can avoid bridging and stratification of the material in the loading bin 1, and also avoid occupying too much area in the loading bin 1 due to the setting of the conical rotating member 14, so that the storage space in the loading bin 1 is basically unchanged;

[0049] The conical rotating member 14 is in contact with the conical portion 11 of the charging bin 1, and does not change the spatial shape of the charging bin 1, so that the material can move to the discharge portion 12 under its own gravity;

[0050] Furthermore, the conical rotating member 14 can be made of stainless steel, which has high structural strength and a smooth surface, making it easy for the material to slide toward the discharge portion 12;

[0051] The air inlet pipe 100 takes air into the installation cavity 13 and exhausts it from the air outlet pipe 1000, so that the gas entering the installation cavity 13 can flow, and the diameter of the air outlet pipe 1000 is smaller than that of the air inlet pipe 100, so the gas pressure in the installation cavity 13 will increase. When the threshold of the valve in the tangential pressure pipe 145 is reached, the gas in the installation cavity 13 is sprayed into the charging bin 1 through the tangential pressure pipe 145, and because the tangential pressure pipe 145 is tangential to the conical rotating member 14, the sprayed gas will spirally rotate downward along the inner wall of the conical rotating member 14. Since the tangential pressure pipe 145 is intermittently exhausted into the charging bin 1, it can intermittently drive the material in the charging bin 1 to move, further avoiding the bridging and stratification of the material in the charging bin 1.

[0052] When the conical rotating member 14 rotates, the tangential pressure pipe 145 on the conical rotating member 14 will reciprocate and be close to the pressing block 23, so that the gas discharged from the tangential pressure pipe 145 is blown onto the pressing block 23, further promoting the movement of the materials in the charging bin 1;

[0053] And the pressing block 23 will always be in close contact with the inner wall of the conical rotating member 14 under the push of the spring 24, which can make the rotation of the conical rotating member 14 more stable;

[0054] At the same time, when the conical valve head 20 rises, the vertical rod 21 will rise together, which makes one end of the first air channel 26 opposite to the second air channel 27, and the gas in the second air channel 27 enters the first air channel 26 and is discharged from the air outlet 25. As a result, when the tangential pressure pipe 145 on the conical rotating part 14 approaches the air outlet 25, the two ejected air flows collide with each other, further disturbing the material, which can effectively avoid bridging and stratification of the material in the loading bin 1.

[0055] Example 2: Reference Figure 1-Figure 10 A method for removing material bridges in a vacuum induction furnace mainly comprises the following steps:

[0056] S1, the air inlet pipe 100 takes air into the installation cavity 13 and discharges it from the air outlet pipe 1000, and the gas entering the installation cavity 13 drives the conical rotating member 14 to rotate in the loading bin 1, and when the conical rotating member 14 rotates, the material in the loading bin 1 moves;

[0057] S2, after the gas pressure in the installation chamber 13 increases, it enters the loading bin 1 through the tangential pressure pipe 145 and generates a spiral downward airflow, which intermittently moves the material;

[0058] S3, the conical valve head 20 rises, the air outlet 25 sprays air, and when the tangential pressure pipe 145 approaches the air outlet 25, a collision airflow is formed to disturb the material, thereby achieving the removal of material bridges.

[0059] The present invention rotates the conical rotating member 14 to move the material near the conical portion 11, and through the arrangement of the tangential pressure pipe 145, a spiral downward airflow is generated to intermittently move the material. When the tangential pressure pipe 145 approaches the air outlet 25, a collision airflow is formed to disturb the material, thereby avoiding the problem of bridging and stratification of the material in the loading bin 1, thereby achieving the effect of clearing the bridging of the material.

[0060] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the present invention can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. A vacuum induction furnace material bridge removal device, comprising a charging bin (1), characterized in that: Also includes: The loading bin (1) comprises a vertical cylinder portion (10), a conical portion (11), and a discharge portion (12) which are connected in sequence; a conical rotating member (14) rotatably disposed at the conical portion (11) of the loading bin (1), the conical rotating member (14) being used to move materials in the loading bin (1) when rotating; A gas drive assembly, arranged on the charging bin (1), and used for driving the conical rotating member (14) to rotate; a conical material valve (2) arranged in the discharge portion (12); when the conical valve head (20) of the conical material valve (2) rises, the conical portion (11) is connected to the discharge portion (12); and when the conical valve head (20) of the conical material valve (2) falls, the conical portion (11) is disconnected from the discharge portion (12); A plurality of tangential pressure pipes (145) are fixedly connected to the outer circumference of the conical rotating member (14), the tangential pressure pipes (145) are tangential to the conical rotating member (14), the two ends of the tangential pressure pipes (145) are respectively connected to the charging bin (1) and the installation cavity (13), and the end of the tangential pressure pipes (145) leading to the conical rotating member (14) is inclined downward; When the gas pressure in the installation cavity (13) reaches the pressure threshold set by the tangential pressure pipe (145), the gas in the installation cavity (13) enters the charging bin (1) tangentially through the tangential pressure pipe (145).

2. The vacuum induction furnace material bridge removal device according to claim 1 is characterized in that: The conical portion (11) is formed with a mounting cavity (13), the conical portion (11) is respectively fixedly connected with an air inlet pipe (100) and an air outlet pipe (1000), and the outer circumference of the conical rotating member (14) is fixedly connected with a blade group (140). When the air intake pipe (100) intakes air tangentially into the installation cavity (13), the conical rotating member (14) is driven to rotate.

3. The vacuum induction furnace material bridge removal device according to claim 2 is characterized in that: A plurality of friction particles (144) are fixedly connected to the inner wall of the conical rotating member (14), and the friction particles (144) are in a convex shape.

4. The device for removing material bridges in a vacuum induction furnace according to claim 1, characterized in that: The top end of the conical rotating member (14) is provided with a folding ear (141), the inner wall of the vertical cylinder portion (10) of the loading bin (1) is fixedly connected with a connecting ring (142), the folding ear (141) is located in the connecting ring (142), and the outer periphery of the end of the conical rotating member (14) is provided with an extending protrusion (143), and the extending protrusion (143) rotates in a rotating groove opened on the inner wall of the conical portion (11).

5. The device for removing material bridges in a vacuum induction furnace according to claim 1, characterized in that: A vertical rod (21) is symmetrically fixedly connected to the conical valve head (20) of the conical material valve (2), a cross rod (22) is slidably connected to the vertical rod (21), a spring (24) is connected between the cross rod (22) and the top of the vertical rod (21), and a clamping block (23) is fixedly connected to the end of the cross rod (22) away from the vertical rod (21), and the clamping block (23) is close to the inner wall of the conical rotating member (14).

6. The device for removing material bridges in a vacuum induction furnace according to claim 5, characterized in that: A ball (28) is embedded and rollingly connected on a surface of the pressing block (23) close to the inner wall of the conical rotating member (14), so that a material flow gap is formed between the pressing block (23) and the inner wall of the conical rotating member (14).

7. The device for removing material bridges in a vacuum induction furnace according to claim 6, characterized in that: An air outlet (25) is provided on one side of the pressing block (23) opposite to the conical rotating member (14) in the rotation direction, so as to form a convection collision when the tangential pressure pipe (145) sprays air into the charging bin (1).

8. The device for removing material bridges in a vacuum induction furnace according to claim 7, characterized in that: A first air passage (26) is provided in the vertical rod (21), one end of the first air passage (26) passes through the outer periphery of the vertical rod (21), a limiting sleeve (29) is fixedly connected to the conical valve head (20), the limiting sleeve (29) is sleeved on the vertical rod (21), a second air passage (27) is provided on the cross bar (22), one end of the second air passage (27) is connected to the air outlet (25), and the other end of the second air passage (27) corresponds to the first air passage (26).

9. A method for removing material bridges in a vacuum induction furnace, comprising a device for removing material bridges in a vacuum induction furnace as claimed in claim 8, characterized in that: The main steps include: S1, the air inlet pipe (100) takes air into the installation chamber (13) and discharges the air from the air outlet pipe (1000), the air entering the installation chamber (13) drives the conical rotating member (14) to rotate in the loading bin (1), and when the conical rotating member (14) rotates, the material in the loading bin (1) moves; S2, after the gas pressure in the installation chamber (13) increases, it enters the loading bin (1) through the tangential pressure pipe (145), and generates a spiral downward airflow, which intermittently moves the material; S3, the conical valve head (20) rises, and the air outlet (25) ejects air. When the tangential pressure pipe (145) approaches the air outlet (25), a collision airflow is formed to disturb the material, thereby clearing the material bridge.

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