Intermediate frequency furnace bottom argon blowing degassing device

Abstract

The invention discloses a bottom argon blowing degassing device for an intermediate frequency furnace, and relates to the technical field of intermediate frequency smelting. The intermediate frequency furnace comprises an intermediate frequency furnace body, wherein an argon blowing mechanism is arranged at the bottom of the intermediate frequency furnace body; the argon blowing mechanism comprises a driving cylinder fixedly installed at the bottom of the intermediate frequency furnace body, a pumping mechanism and an adjusting mechanism are arranged in the driving cylinder, a connecting plate is fixedly connected between the intermediate frequency furnace body and the driving cylinder, and argon can be conveyed to the bottom of the intermediate frequency furnace through the arranged argon blowing mechanism. By means of the arranged adjusting mechanism, the area and the range of argon entering the bubble generator can be adjusted, when the adjusting mechanism adjusts the opening to be in a small range and argon is injected into the specific area, impurities in the area can be disturbed and loosened, then the impurities are more easily brought out by bubbles, and due to the fact that the action range of the bubbles is limited, the bubbles can be effectively prevented from falling off. When the rotating plate rotates to a certain position, only impurities in the area are effectively blown and driven, and unnecessary airflow diffusion is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of medium frequency smelting equipment, in particular to a medium frequency furnace bottom blowing argon degassing device. Background Art

[0002] The medium frequency furnace uses a medium frequency power supply to establish a medium frequency magnetic field, which generates induced eddy currents inside the ferromagnetic material and generates heat to achieve the purpose of heating the material. The medium frequency furnace uses a 200-2500Hz medium frequency power supply for induction heating, melting and heat preservation. The medium frequency furnace is mainly used for melting carbon steel, alloy steel, and special steel. It can also be used for melting and heating non-ferrous metals such as copper and aluminum. The equipment is small in size, light in weight, high in efficiency, low in power consumption, fast in melting and heating, easy to control the furnace temperature, and high in production efficiency.

[0003] The patent (application number: CN202022445114.0) discloses a medium frequency furnace bottom blowing argon degassing device, including a furnace body, a furnace cover and a crucible, the crucible is located inside the furnace body, the outer wall of the crucible is provided with a heating coil, the lower end of the crucible is provided with a refractory air-permeable brick, the lower end of the refractory air-permeable brick is fixed to the crucible by a fixed block, the interior of the fixed block is provided with a cavity, and one side of the cavity is provided with an air outlet. The main feature of the utility model is that during the crucible smelting process, argon gas is introduced from the bottom of the crucible upward through an air guide pipe, and the argon gas enters the molten metal in a multi-point manner through the air outlet, merges with hydrogen and nitrogen, and floats up, so that the hydrogen and nitrogen are separated from the molten metal and enter the interior of the collecting tank, thereby reducing the content of hydrogen and nitrogen in the molten metal, so that the raw materials do not need to consider the nitrogen and hydrogen content in the raw materials to a certain extent, thereby reducing the production cost of castings.

[0004] This patent and the prior art have the following technical problems in actual use: Since the molten metal in the medium frequency furnace needs to be degassed, the impurities contained in the molten metal may be deposited in the medium frequency furnace. When there are too many impurities at the bottom, when blowing argon, the impurities will hinder the rise of bubbles, thereby affecting the effect of argon gas removal and resulting in incomplete degassing. Summary of the Invention

[0005] The purpose of the present invention is to solve the above problems and provide an argon blowing degassing device for a medium frequency furnace bottom.

[0006] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions: An argon blowing degassing device for a medium frequency furnace bottom comprises a medium frequency furnace body, wherein an argon blowing mechanism is provided at the bottom of the medium frequency furnace body; The argon blowing mechanism includes a driving cylinder fixedly installed at the bottom of the intermediate frequency furnace body, a pumping mechanism and an adjustment mechanism are provided inside the driving cylinder, a connecting plate is fixedly connected between the intermediate frequency furnace body and the driving cylinder, and a bubble generator is fixedly installed on the top of the connecting plate; The adjusting mechanism includes an adjusting disk arranged inside the driving cylinder, a rotating plate is provided above the adjusting disk, and a plurality of rotating plates are provided in an annular manner. A mounting plate is rotatably mounted between the rotating plate and the adjusting disk, the mounting plate is fixedly connected to the rotating plate, the adjusting disk is fixedly connected to the uppermost mounting plate, a linkage mechanism is provided between the mounting plates, a fixed plate is fixedly mounted on the top of each rotating plate, and a telescopic block is fixedly mounted between the fixed plates; A transmission cylinder is provided inside the driving cylinder, and the pumping mechanism is connected to the transmission cylinder. The pumping mechanism can pressurize and transport the argon gas inside the transmission cylinder.

[0007] Furthermore, an air supply hole is provided at the bottom of the connecting plate, and the air supply hole is connected to the bubble generator. The telescopic block has a certain toughness and can fit in the air supply hole.

[0008] Furthermore, the linkage mechanism includes a connecting member fixedly mounted on the surface of the mounting plate, the connecting member is symmetrically arranged in two upper and lower groups, and is arranged at intervals of one mounting plate, the surface of the mounting plate is provided with a sliding groove, the mounting plate is slidably mounted with a sliding member through the sliding groove, the mounting plate is rotatably mounted with a first connecting rod through the connecting member, the other end of the first connecting rod is rotatably connected to the sliding member, a second connecting rod is rotatably mounted on the surface of the sliding member, and the second connecting rod is rotatably connected to the connecting member.

[0009] Furthermore, a connecting ring is rotatably mounted on the inner wall of the driving cylinder, a connecting groove is provided on the inner wall of the connecting ring, and the rotating plate is slidably connected to the connecting ring through the connecting groove.

[0010] Furthermore, the pumping mechanism includes a connecting pipe that is rotatably connected to the top of the transmission cylinder, a first support plate is provided above the connecting pipe, a plurality of first matching blocks are annularly installed on the bottom of the first support plate, a second support plate is provided below the first support plate, the second support plate is rotatably connected to the inner wall of the driving cylinder, a second matching block is provided on the top of the second support plate, and the first matching block and the second matching block cooperate with each other.

[0011] Furthermore, the connecting tube passes through and extends to the bottom of the first support plate, a matching cylinder is fixedly installed on the top of the first support plate, a return spring is fixedly installed between the matching cylinder and the connecting tube, the return spring is sleeved on the surface of the connecting tube and is located inside the matching cylinder, and a piston plate is fixedly installed on the bottom of the first support plate, and the piston plate is located inside the connecting tube.

[0012] Furthermore, an electric telescopic rod is fixedly installed on the bottom of the second support plate, a connecting seat is fixedly installed on the output end of the electric telescopic rod, and a plurality of matching rods are fixedly installed on the top of the connecting seat. The matching rods are fixedly connected to the second matching block, and the second matching block can pass through and extend to the bottom of the second support plate.

[0013] Furthermore, a rotating tube is fixedly installed on the bottom of the second support plate, the rotating tube is sleeved on the surface of the connecting tube, a first gear is fixedly installed on the surface of the rotating tube, a driving motor is fixedly installed on the top of the transmission cylinder, a second gear is fixedly installed on the output end of the driving motor, and the second gear is meshed and connected with the first gear.

[0014] Furthermore, a support member is fixedly installed on the top of the second support plate, and the support member is fixedly connected to the bottom of the adjustment disk.

[0015] Furthermore, an argon assembly is fixedly installed on one side of the driving cylinder, a first gas pipe is fixedly installed between the argon assembly and the transmission cylinder, a second gas pipe is fixedly connected to the surface of the transmission cylinder, and a one-way valve is provided inside the first gas pipe and the second gas pipe.

[0016] The beneficial effects of the present invention are as follows: 1. The present invention can transport argon to the bottom of the medium frequency furnace through the argon blowing mechanism, and can adjust the area and range of argon entering the bubble generator by using the regulating mechanism. When the regulating mechanism adjusts the opening to a smaller range, when the argon is injected into this specific area, the impurities in the area can be disturbed and loosened, making it easier to be brought out by bubbles. At the same time, since the range of action of the bubbles is limited, when the rotating plate rotates to a certain position, only the impurities in this area are effectively blown and driven, avoiding unnecessary airflow diffusion. At the same time, the pumping mechanism can increase the pressure of the bubbles, thereby improving the disturbance effect on the impurities. When the regulating mechanism is adjusted to a large range, the range of argon injection will be enlarged, thereby enlarging the distribution range of the bubbles, and then allowing the loosened impurities to float up, thereby ensuring that the impurities in the entire pinch are evenly removed, thereby improving the degassing effect.

[0017] 2. The present invention utilizes the linkage mechanism to adjust the range of the rotating plate, so that when the argon is delivered to the inside of the medium frequency furnace body, the injection method of the argon can be precisely controlled according to actual needs, avoiding the occurrence of excessive or insufficient argon. At the same time, it can optimize the distribution of bubbles and accelerate the loosening and floating of impurities at the bottom of the furnace.

[0018] 3. The pumping mechanism provided in the present invention can accelerate the delivery of argon by pressurizing and intermittently, making the impact force of argon injection stronger, helping to speed up the bursting of bubbles in the furnace, thereby more effectively separating the dissolved gas in the metal and improving the degassing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the intermediate frequency furnace body of the present invention; Figure 2 This is a side view of the intermediate frequency furnace body of the present invention; Figure 3 1 is a schematic diagram of a bubble generator of the present invention; Figure 4 This is a schematic diagram of the interior of the drive cylinder of the present invention; Figure 5 It is a schematic diagram of the pumping mechanism of the present invention; Figure 6 It is a schematic diagram of the regulating mechanism of the present invention; Figure 7 It is a cross-sectional schematic diagram of the matching cylinder of the present invention; Figure 8 This invention Figure 6 Schematic diagram at point A in the middle.

[0020] Reference numerals: 1, intermediate frequency furnace body; 2, argon blowing mechanism; 201, driving cylinder; 202, connecting plate; 203, bubble generator; 3, pumping mechanism; 31, connecting pipe; 32, first supporting plate; 33, first matching block; 34, second supporting plate; 35, second matching block; 36, matching cylinder; 37, return spring; 38, piston plate; 4, adjusting mechanism; 401, adjusting disk; 402, rotating plate; 403, mounting plate; 404, fixing plate; 405, Telescopic block; 406, transmission cylinder; 5, linkage mechanism; 51, connecting piece; 52, sliding groove; 53, sliding piece; 54, first connecting rod; 55, second connecting rod; 56, connecting ring; 57, connecting groove; 6, gas hole; 7, electric telescopic rod; 8, connecting seat; 9, matching rod; 10, rotating tube; 11, first gear; 12, driving motor; 13, second gear; 14, supporting piece; 15, argon assembly; 16, first gas pipe; 17, second gas pipe. DETAILED DESCRIPTION

[0021] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0022] A medium frequency furnace bottom blowing argon degassing device according to a preferred embodiment of the present invention will be described in detail below.

[0023] Example 1, as Figures 1-8 As shown, it includes an intermediate frequency furnace body 1, and an argon blowing mechanism 2 is provided at the bottom of the intermediate frequency furnace body 1; The argon blowing mechanism 2 includes a driving cylinder 201 fixedly mounted on the bottom of the intermediate frequency furnace body 1, a pumping mechanism 3 and an adjusting mechanism 4 are provided inside the driving cylinder 201, a connecting plate 202 is fixedly connected between the intermediate frequency furnace body 1 and the driving cylinder 201, and a bubble generator 203 is fixedly mounted on the top of the connecting plate 202; The adjustment mechanism 4 includes an adjustment disk 401 disposed inside the driving cylinder 201, a rotating plate 402 is disposed above the adjustment disk 401, and the rotating plates 402 are arranged in a ring-shaped manner in a plurality of groups. A mounting plate 403 is rotatably mounted between the rotating plate 402 and the adjustment disk 401, and the mounting plate 403 is fixedly connected to the rotating plate 402. The adjustment disk 401 is fixedly connected to the uppermost mounting plate 403, and a linkage mechanism 5 is provided between the mounting plates 403. A fixed plate 404 is fixedly mounted on the top of each rotating plate 402, and a telescopic block 405 is fixedly mounted between the fixed plates 404; A transmission cylinder 406 is provided inside the driving cylinder 201, and the pumping mechanism 3 is connected to the transmission cylinder 406. The pumping mechanism 3 can pressurize and transport the argon gas inside the transmission cylinder 406; When the staff is degassing the intermediate frequency furnace, the argon gas is first transported into the transmission cylinder 406, and then transported to the inside of the driving cylinder 201 through the transmission cylinder 406, and then transported to the inside of the bubble generator 203 through the connecting plate 202, thereby generating bubbles and degassing the molten metal by blowing argon. At this time, the staff can control the rotation of the adjustment disk 401 during the initial argon blowing. When the adjustment disk 401 rotates, it drives the top mounting plate 403 to rotate, and drives each set of rotating plates 402 to rotate and open through the linkage mechanism 5. When the rotating plate 402 is fully expanded, there will still be a part of the gap. When the rotating plate 402 is rotated and opened, the telescopic block 405 on its top will be pulled and extended, thereby blocking part of the bubble generator 203. The air inlet of the bubble generator 203 is opened, and only a small part of the air inlet of the bubble generator 203 is opened. At the same time, the transmission cylinder 406 is pressurized by the pumping mechanism 3 to transport part of the argon gas in the transmission cylinder 406 and then transport it to the bubble generator 203 again. At this time, the bubbles generated by the bubble generator 203 will disturb the molten metal in the furnace, so that the impurities accumulated inside the furnace can be impacted, so that they are wrapped by the bubbles and carried up and out of the furnace. At the same time, since only a small part of the air inlet of the bubble generator 203 is opened, the argon gas can be concentrated on degassing a certain area. At the same time, as the rotating plate 402 continues to rotate, the argon gas can follow the rotating plate 402 to rotate, and then enter the interior of the bubble generator 203 in a circular rotation, thereby ensuring that the bubbles are evenly distributed. When entering the middle stage of blowing, the staff can control the adjustment disk 401 to rotate in the opposite direction, thereby driving the rotating plate 402 to retract, thereby increasing the air inlet of the bubble generator 203, thereby increasing the bubble flow rate and making the bubble release more intense, thereby accelerating the impurity removal process and improving the blowing effect; The argon blowing mechanism 2 is provided to transport argon to the bottom of the medium frequency furnace, and the regulating mechanism 4 is provided to regulate the area and range of the argon entering the bubble generator 203. When the regulating mechanism 4 adjusts the opening to a smaller range, when the argon is injected into this specific area, the impurities in the area can be disturbed and loosened, making it easier to be taken out by bubbles. At the same time, since the range of action of the bubbles is limited, when the rotating plate 402 rotates to a certain place, only the impurities in this area are effectively blown and driven, avoiding unnecessary airflow diffusion. At the same time, the pumping mechanism 3 can increase the pressure of the bubbles, thereby increasing the disturbance effect on the impurities. When the regulating mechanism 4 is adjusted to a large range, the range of argon injection will be enlarged, thereby enlarging the distribution range of the bubbles, and allowing the loosened impurities to float up, thereby ensuring that the impurities in the entire road are evenly removed, thereby improving the degassing effect.

[0024] Example 2, as Figure 1-Figure 7 As shown, the bottom of the connecting plate 202 is provided with an air delivery hole 6, which is connected to the bubble generator 203. The telescopic block 405 has a certain toughness and can fit with the air delivery hole 6. When the rotating plate 402 rotates, the telescopic block 405 will be stretched, so as to continuously block the gas delivery hole 6, so that the argon gas can only enter from the unblocked area.

[0025] Example 3, as Figures 1-8 As shown, the linkage mechanism 5 includes a connecting member 51 fixedly mounted on the surface of the mounting plate 403, the connecting members 51 are symmetrically arranged in two groups, one above the other, and are arranged every other mounting plate 403, a sliding groove 52 is provided on the surface of the mounting plate 403, a sliding member 53 is slidably installed on the mounting plate 403 through the sliding groove 52, a first connecting rod 54 is rotatably mounted on the mounting plate 403 through the connecting member 51, the other end of the first connecting rod 54 is rotatably connected to the sliding member 53, a second connecting rod 55 is rotatably mounted on the surface of the sliding member 53, the second connecting rod 55 is rotatably connected to the connecting member 51, a connecting ring 56 is rotatably mounted on the inner wall of the driving cylinder 201, a connecting groove 57 is provided on the inner wall of the connecting ring 56, and the rotating plate 402 is slidably connected to the connecting ring 56 through the connecting groove 57; When the adjusting disk 401 rotates and drives the uppermost rotating plate 402 to rotate, the rotating plate 402 will rotate in a circular manner. At the same time, the connecting member 51 on its surface will drive the sliding member 53 to slide inside the sliding groove 52 through the second connecting rod 55. At the same time, when the sliding member 53 slides, it will drive the mounting plate 403 connected thereto to rotate on the top of the adjusting disk 401 through the first connecting rod 54, thereby opening in sequence, and then presenting a manner similar to the opening of a fan, so that it is fully opened. When the uppermost rotating plate 402 rotates in the opposite direction, it can move in the opposite direction, driving each group of rotating plates 402 to retract and reset. The linkage mechanism 5 can be used to adjust the expansion range of the rotating plate 402, so that when the argon is transported to the inside of the medium frequency furnace body 1, the injection method of the argon can be precisely controlled according to actual needs, avoiding the occurrence of excessive or insufficient argon. At the same time, it can optimize the distribution of bubbles and accelerate the loosening and floating of impurities at the bottom of the furnace.

[0026] Example 4, as Figure 1-Figure 7 As shown, the pumping mechanism 3 includes a connecting pipe 31 that is rotatably connected to the top of the transmission cylinder 406, a first support plate 32 is provided above the connecting pipe 31, and a plurality of first matching blocks 33 are annularly installed at the bottom of the first support plate 32, and a second support plate 34 is provided below the first support plate 32. The second support plate 34 is rotatably connected to the inner wall of the driving cylinder 201, and a second matching block 35 is provided on the top of the second support plate 34. The first matching block 33 and the second matching block 35 cooperate with each other. The connecting pipe 31 passes through and extends to the bottom of the first support plate 32, and a matching cylinder 36 is fixedly installed on the top of the first support plate 32. A return spring 37 is fixedly installed between the matching cylinder 36 and the connecting pipe 31. The return spring 37 is sleeved on the surface of the connecting pipe 31 and is located inside the matching cylinder 36. A piston plate 38 is fixedly installed on the bottom of the first support plate 32, and the piston plate 38 is located inside the connecting pipe 31. When the second support plate 34 rotates, the second matching block 35 provided on the top of the second support plate 34 will cooperate with the first matching block 33 at the bottom of the first support plate 32. As the second support plate 34 continues to rotate, the second matching block 35 can push the first matching block 33 to move upward, thereby pushing the first support plate 32 to move upward. During the upward movement of the first support plate 32, the matching cylinder 36 moves upward synchronously, squeezing the return spring 37 at the same time, which will drive the piston plate 38 to move upward, thereby pressurizing the argon gas inside the connecting pipe 31. When the first matching block 33 and the second matching block 35 are no longer in contact, the return spring 37 will push the matching cylinder 36 and then drive the first support plate 32 to return to its original position. As the first support plate 32 rises, part of the argon gas inside the transmission pipe 406 is absorbed. When it descends, this part of the argon gas is pressurized and transported into the connecting pipe 31, and accelerated to be transported into the bubble generator 203, and so on. The pumping mechanism 3 can accelerate the argon delivery by pressurizing and intermittently, making the impact force of the argon injection stronger, which helps to speed up the bursting of bubbles in the furnace, thereby more effectively separating the dissolved gas in the metal and improving the degassing efficiency.

[0027] Example 5, as Figure 1-Figure 7As shown, the bottom of the second support plate 34 is fixedly mounted with an electric telescopic rod 7, the output end of the electric telescopic rod 7 is fixedly mounted with a connecting seat 8, and the top of the connecting seat 8 is fixedly mounted with a plurality of matching rods 9, which are fixedly connected to the second matching block 35. The second matching block 35 can penetrate and extend to the bottom of the second support plate 34; The electric telescopic rod 7 is used to push the connecting seat 8 to move downward, so that the position of the second support plate 34 is adjusted, thereby adjusting the pumping strength of the pumping mechanism 3.

[0028] Example 6: Figures 1-8 As shown, a rotating tube 10 is fixedly mounted on the bottom of the second support plate 34, and the rotating tube 10 is sleeved on the surface of the connecting tube 31. A first gear 11 is fixedly mounted on the surface of the rotating tube 10. A driving motor 12 is fixedly mounted on the top of the transmission cylinder 406. A second gear 13 is fixedly mounted on the output end of the driving motor 12. The second gear 13 is meshed and connected with the first gear 11. A support member 14 is fixedly mounted on the top of the second support plate 34, and the support member 14 is fixedly connected to the bottom of the adjusting disk 401. The drive motor 12 is provided to drive the second gear 13 to rotate. The second gear 13 engages with the first gear 11 during rotation, thereby causing the first gear 11 to drive the rotating tube 10 to rotate, thereby rotating the second support plate 34 and enabling the pumping mechanism 3 to pressurize the argon gas.

[0029] Example 7, as Figures 1-8 As shown, an argon assembly 15 is fixedly installed on one side of the driving cylinder 201, a first gas pipe 16 is fixedly installed between the argon assembly 15 and the transmission cylinder 406, and a second gas pipe 17 is fixedly connected to the surface of the transmission cylinder 406. A one-way valve is provided inside each of the first gas pipe 16 and the second gas pipe 17; The argon component 15 can continuously transmit argon to the inside of the transmission cylinder 406, and at the same time, it is transported to the driving cylinder 201 through the second gas pipe 17, and then enters the bubble generator 203. The pumping mechanism 3 can pressurize and discharge part of the argon, so that the bubbles generated by the bubble generator 203 are accelerated, thereby increasing the impact force of the bubbles.

[0030] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A medium frequency furnace bottom blowing argon degassing device, comprising a medium frequency furnace body (1), characterized in that: An argon blowing mechanism (2) is provided at the bottom of the intermediate frequency furnace body (1); The argon blowing mechanism (2) comprises a driving cylinder (201) fixedly mounted on the bottom of the intermediate frequency furnace body (1), a pumping mechanism (3) and an adjusting mechanism (4) are provided inside the driving cylinder (201), a connecting plate (202) is fixedly connected between the intermediate frequency furnace body (1) and the driving cylinder (201), and a bubble generator (203) is fixedly mounted on the top of the connecting plate (202); The adjusting mechanism (4) includes an adjusting disk (401) arranged inside the driving cylinder (201), a rotating plate (402) is arranged above the adjusting disk (401), and the rotating plates (402) are arranged in a ring-shaped manner in a plurality of groups. A mounting plate (403) is rotatably mounted between the rotating plate (402) and the adjusting disk (401), the mounting plate (403) is fixedly connected to the rotating plate (402), the adjusting disk (401) is fixedly connected to the uppermost mounting plate (403), a linkage mechanism (5) is arranged between the mounting plates (403), a fixed plate (404) is fixedly mounted on the top of each of the rotating plates (402), and a telescopic block (405) is fixedly mounted between the fixed plates (404); A transmission cylinder (406) is provided inside the driving cylinder (201), and the pumping mechanism (3) is connected to the transmission cylinder (406). The pumping mechanism (3) can pressurize and transport the argon gas inside the transmission cylinder (406).

2. The medium frequency furnace bottom blowing argon degassing device according to claim 1, characterized in that: An air delivery hole (6) is provided at the bottom of the connecting plate (202), and the air delivery hole (6) is in communication with the bubble generator (203). The telescopic block (405) has a certain toughness and can fit in contact with the air delivery hole (6).

3. The medium frequency furnace bottom blowing argon degassing device according to claim 1, characterized in that: The linkage mechanism (5) includes a connecting member (51) fixedly mounted on the surface of the mounting plate (403), the connecting member (51) is symmetrically arranged in two groups, one above the other, and is arranged every other mounting plate (403), the surface of each mounting plate (403) is provided with a sliding groove (52), the mounting plate (403) is slidably mounted with a sliding member (53) through the sliding groove (52), the mounting plate (403) is rotatably mounted with a first connecting rod (54) through the connecting member (51), the other end of the first connecting rod (54) is rotatably connected to the sliding member (53), the surface of the sliding member (53) is rotatably mounted with a second connecting rod (55), and the second connecting rod (55) is rotatably connected to the connecting member (51).

4. The medium frequency furnace bottom blowing argon degassing device according to claim 1, characterized in that: A connecting ring (56) is rotatably mounted on the inner wall of the driving cylinder (201), a connecting groove (57) is provided on the inner wall of the connecting ring (56), and the rotating plate (402) is slidably connected to the connecting ring (56) via the connecting groove (57).

5. The medium frequency furnace bottom blowing argon degassing device according to claim 1, characterized in that: The pumping mechanism (3) includes a connecting pipe (31) rotatably connected to the top of the transmission cylinder (406), a first support plate (32) is provided above the connecting pipe (31), a plurality of first matching blocks (33) are annularly installed at the bottom of the first support plate (32), a second support plate (34) is provided below the first support plate (32), the second support plate (34) is rotatably connected to the inner wall of the driving cylinder (201), a second matching block (35) is provided on the top of the second support plate (34), and the first matching block (33) and the second matching block (35) cooperate with each other.

6. The medium frequency furnace bottom blowing argon degassing device according to claim 5, characterized in that: The connecting tube (31) passes through and extends to the bottom of the first support plate (32). A matching cylinder (36) is fixedly installed on the top of the first support plate (32). A return spring (37) is fixedly installed between the matching cylinder (36) and the connecting tube (31). The return spring (37) is sleeved on the surface of the connecting tube (31) and is located inside the matching cylinder (36). A piston plate (38) is fixedly installed on the bottom of the first support plate (32). The piston plate (38) is located inside the connecting tube (31).

7. The medium frequency furnace bottom blowing argon degassing device according to claim 5, characterized in that: An electric telescopic rod (7) is fixedly mounted on the bottom of the second support plate (34), a connecting seat (8) is fixedly mounted on the output end of the electric telescopic rod (7), a plurality of matching rods (9) are fixedly mounted on the top of the connecting seat (8), the matching rods (9) are fixedly connected to the second matching block (35), and the second matching block (35) can penetrate and extend to the bottom of the second support plate (34).

8. The medium frequency furnace bottom blowing argon degassing device according to claim 5, characterized in that: A rotating tube (10) is fixedly mounted on the bottom of the second support plate (34), the rotating tube (10) is sleeved on the surface of the connecting tube (31), a first gear (11) is fixedly mounted on the surface of the rotating tube (10), a driving motor (12) is fixedly mounted on the top of the transmission cylinder (406), a second gear (13) is fixedly mounted on the output end of the driving motor (12), and the second gear (13) is meshedly connected with the first gear (11).

9. The medium frequency furnace bottom blowing argon degassing device according to claim 5, characterized in that: A support member (14) is fixedly mounted on the top of the second support plate (34), and the support member (14) is fixedly connected to the bottom of the adjustment disk (401).

10. The medium frequency furnace bottom blowing argon degassing device according to claim 1, characterized in that: An argon gas component (15) is fixedly installed on one side of the driving cylinder (201), a first gas supply pipe (16) is fixedly installed between the argon gas component (15) and the transmission cylinder (406), a second gas supply pipe (17) is fixedly connected to the surface of the transmission cylinder (406), and a one-way valve is provided inside each of the first gas supply pipe (16) and the second gas supply pipe (17).

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