Vacuum high efficiency arc melting furnace system

Abstract

The present invention belongs to the technical field of arc melting furnace equipment. Aiming at the technical problem of poor air tightness existing in the prior art, the purpose of the present invention is to provide a vacuum high-efficiency arc melting furnace system, including an argon tank, an arc furnace, a diffusion pump, and a vacuum pump. The argon tank is connected to the arc furnace through a gas pipeline, and argon is filled into the arc furnace through the argon tank. The top of the arc furnace is connected to the rocker through a rocker base, and the bottom of the arc furnace is connected to a copper cap through a crucible. The side of the arc furnace is connected to the diffusion pump through a pipeline, and the arc furnace is connected to the vacuum pump through a gas pipeline. The vacuum pump is turned on to control the vacuum pumping of the arc furnace. The air tightness of the system is improved. The high vacuum pumping time of the melting furnace is increased from 30 minutes each time to 1 minute each time by the comprehensive system design proposed by the present invention. It greatly saves the time of scientific researchers.

Description

Technical Field

[0001] The invention belongs to the technical field of arc melting furnace equipment, and in particular relates to a vacuum high-efficiency arc melting furnace system. Background Art

[0002] Vacuum arc furnace is a special equipment for melting metals. It is a metallurgical process in which metal materials and other auxiliary materials are put into the furnace for melting and tempering. The materials in the high-temperature furnace undergo certain physical and chemical changes to produce crude metals or alloys. The melting crucible is a container for melting physical and chemical reactions.

[0003] The technical problems existing in the equipment in the prior art are as follows: First, in the original equipment, the crucible and the sleeve are not integrated, but connected by threads, which results in dirt and dust in the thread gap every time the sleeve and the crucible are disassembled, affecting the overall airtightness and reducing the vacuum pumping rate. Secondly, in the original equipment, the cooling water circuit also exists inside the vacuum furnace body, which results in the pressure difference caused by the vacuum causing the cooling water to leak into the furnace body once a water leak occurs. Thirdly, in the prior art, the threaded hole used to connect the crucible to the vacuum furnace body is located inside the furnace body, and the threaded holes and gaps are prone to accumulation of stains, mixed with dust, and adsorbed gases are difficult to diffuse and difficult to clean.

[0004] In addition, during the suction casting process, the existing equipment is prone to direct blockage of the suction casting air pipe due to the limitations of the equipment structure caused by the direct hose connection design. The success rate of the experiment is low, and it often takes a lot of time to maintain the equipment on site, which is time-consuming and labor-intensive.

[0005] The sealing condition of the sleeve rod and the ball core of the arc furnace welding gun at the ball hinge is not ideal. Under normal circumstances, the sealing at the sleeve rod is more common and is also the easiest part to seal, but the vacuum sealing of the ball core in the spherical rolling state is ignored, resulting in a serious leakage problem, causing the high-temperature arc furnace vacuum process to consume a lot of time. At present, the industry has not found a technical solution to the poor vacuum sealing problem mentioned above under the spherical rolling state, nor has it found a corresponding technical solution.

[0006] In summary, how to develop a vacuum high-efficiency arc melting furnace system and improve the long-term reliable performance of the equipment is of great practical significance. Summary of the invention

[0007] In view of the technical problem of poor airtightness in the prior art, the present invention aims to provide a vacuum high-efficiency arc melting furnace system.

[0008] The technical solution adopted by the present invention is:

[0009] A vacuum high-efficiency arc melting furnace system includes an argon tank, an arc furnace, a diffusion pump, and a vacuum pump. The argon tank is connected to the arc furnace through a gas pipeline, and argon is filled into the arc furnace through the argon tank. The top of the arc furnace is connected to the rocker through a rocker base, and the bottom of the arc furnace is connected to a copper cap through a crucible. The side of the arc furnace is connected to the diffusion pump through a pipeline, and the arc furnace is connected to the vacuum pump through a gas pipeline. The vacuum switching valve cover on the arc furnace is set as an integrated structure, and the vacuum of the arc furnace is controlled by turning on the vacuum pump.

[0010] Furthermore, the copper cap includes a connecting port, a collecting chamber and an exhaust pipe. The upper end of the collecting chamber is set as a connecting port, which is connected to the smelting furnace through the connecting port; the exhaust pipe is set on a side wall of the collecting chamber, and the free end of the exhaust pipe is set as an exhaust outlet, which is connected to an exhaust pump; the base of the exhaust pipe is set as an exhaust inlet, and the exhaust pipe is connected to the collecting chamber through the exhaust inlet to form an integrated structure. The exhaust pipe is controlled by the exhaust pump to laterally absorb air during the suction casting process, thereby controlling the separation of the gas-solid mixture flowing down to the collecting chamber.

[0011] Furthermore, the copper cap is made of copper material with high thermal conductivity to control the heat dissipation of the solid melt under the diversion as it touches the wall of the collecting chamber; the interior of the exhaust duct is arranged as a tubular structure, the exhaust duct is inserted into the exhaust duct through the exhaust outlet, and the outer wall of the free end of the exhaust outlet is arranged as a gradual port, and the gradual port is arranged as a truncated cone-shaped gradually expanding inlet from the outside to the inside; the height position of the exhaust outlet of the exhaust duct ≥ the height position of the exhaust inlet ≥ the upper end position of the collecting chamber.

[0012] Furthermore, the crucible comprises a crucible body, the top of the crucible body is connected to the arc melting furnace, a suction casting crucible is arranged at the center of the top of the crucible body, melting crucibles are arranged around the suction casting crucible, and the bottom of the suction casting crucible extends downward in an integrated manner to form a mold cavity;

[0013] A cooling water channel is arranged at the bottom end of the crucible body, and the cooling water channel is coaxially arranged with the outer wall of the mold cavity as the center to form a circular maze structure;

[0014] The outer side wall of the bottom end of the mold cavity is convex outwardly and is arranged to be connected to the bottom. The bottom end of the crucible body is connected to a copper cap through the connecting bottom, and the molten material is collected through the copper cap.

[0015] Furthermore, the crucible body is made of pure copper to form an integrated part, and a vacuum sealing groove is formed between the crucible body and the arc melting furnace. The vacuum sealing groove is embedded in the connecting plate along the bottom of the outer wall of the crucible body and is set as an annular groove structure; the upper end of the connecting bottom is embedded in an annular shape and is set as a water sealing groove.

[0016] Furthermore, a water seal base is provided, and the crucible body is extended outwardly on all sides to form a connecting plate, and screw holes are arranged at equal intervals on the connecting plate. The crucible body is connected to the water seal base through the screw holes of the connecting plate, and a cooling water channel is formed by a sealed gap between the crucible body and the water seal base; the water seal base is provided as a sleeve structure with a through hole in the center, which is sleeved on the outside of the mold cavity, and the upper end of the sleeve extends outward to form an annular connecting structure that is compatible with the connecting plate.

[0017] Furthermore, a shaking vacuum sealing device based on a PEEK sealing frame is provided, which includes a rocker, a ball core, an upper frame, a middle frame, and a lower frame. The upper frame, the middle frame, and the lower frame are coaxially arranged from top to bottom, and the upper frame, the middle frame, and the lower frame are adjacent to each other from top to bottom to form a sealed cavity. The sealed cavity is configured as a spherical cavity that matches the shape of the ball core. The ball core is embedded in the sealed cavity. The upper end of the ball core is connected to the rocker, and the upper end of the rocker extends to the outside of the sealed cavity.

[0018] Furthermore, the upper frame is configured as an annular structure, the outer side wall of the upper frame is provided with an upper outer sealing groove arranged in an annular manner, the inner side wall of the upper frame is configured as an upper arc portion, the curvature of the upper arc portion is configured to be consistent with the curvature of the outer wall of the core, and an embedded upper inner sealing groove is arranged in an annular manner along the inner wall of the upper arc portion, and several sealing rings are respectively embedded in the upper inner sealing groove and the upper outer sealing groove;

[0019] The middle frame is configured as an annular structure, the outer wall of the middle frame is provided with middle and outer sealing grooves in an annular arrangement, the inner wall of the middle frame is configured as a middle arc portion, the curvature of the middle arc portion is configured to be consistent with the curvature of the outer wall of the core, and an embedded middle inner sealing groove is provided in an annular arrangement along the inner wall of the middle arc portion, and several sealing rings are respectively embedded in the middle inner sealing groove and the middle and outer sealing groove;

[0020] The lower frame is configured as an annular structure, and the outer side wall of the lower frame is provided with a lower outer sealing groove in an annular arrangement, and the sealing ring is embedded in the lower outer sealing groove. The inner side wall of the lower frame is sequentially configured as a lower arc portion and a lower inclined portion from top to bottom, and the curvature of the lower arc portion is configured to be consistent with the curvature of the outer wall of the ball core, and the angle between the lower inclined portion and the outer tangent of the ball core is configured to be an acute angle, and the lower inclined portion is an outward-expanding structure as a whole, and the inner diameter of the lower inclined portion is larger than the outer diameter of the lower port of the ball core.

[0021] Furthermore, a vacuum equipment shaking sealing device based on a polyurethane sealing ring is provided, which includes a rocker, a ball core, an upper positioning ring, an upper sealing ring, a lower sealing ring, a scraper ring, and a lower positioning ring. The upper positioning ring, upper sealing ring, lower sealing ring, and scraper ring are coaxially arranged from top to bottom, and the upper positioning ring, upper sealing ring, lower sealing ring, and scraper ring are adjacent to each other from top to bottom to form a sealed cavity. The sealed cavity is configured as a spherical cavity that matches the shape of the ball core. The ball core is embedded in the sealed cavity. The upper end of the ball core is connected to the rocker, and the upper end of the rocker extends to the outside of the sealed cavity.

[0022] Furthermore, the upper positioning ring is configured as an annular structure, the inner side wall of the upper positioning ring is configured as an upper inclined portion and an upper arc portion in sequence from top to bottom, the curvature of the upper arc portion is configured to be consistent with the curvature of the outer wall of the core, the angle between the upper inclined portion and the outer tangent line of the core is configured to be an acute angle, and the upper inclined portion is an outward expansion structure as a whole;

[0023] The lower positioning ring is configured as an annular structure, and an outer sealing groove is arranged in an annular manner along the outer side wall of the lower positioning ring. The inner side wall of the lower positioning ring is sequentially configured as a lower arc portion and a lower inclined portion from top to bottom. The curvature of the lower arc portion is configured to be consistent with the curvature of the outer wall of the core. The sealing ring is embedded in the outer sealing groove. The angle between the lower inclined portion and the outer tangent line of the core is configured as an acute angle. The lower inclined portion is an outward expansion structure as a whole.

[0024] The upper sealing ring and the lower sealing ring have the same structural configuration, and are both configured as an annular structure. An upper sealing lip and a lower sealing lip are respectively arranged in an annular shape along the upper end surface of the upper sealing ring and the lower end surface of the lower sealing ring. The cross sections of the upper sealing ring and the lower sealing ring are both configured as a "Y"-shaped structure.

[0025] The scraper ring is arranged as an annular structure, the scraper inner wall on the side of the scraper ring close to the ball core extends inwardly to be arranged as a scraper arm, the scraper arm is arranged as an arc-shaped curved surface structure which is mutually compatible with the outer wall of the ball core, the scraper outer wall on the side of the scraper ring away from the ball core is arranged as a cylindrical structure, and a scraper groove is arranged inwardly along the lower bottom surface of the scraper ring between the scraper inner wall and the scraper outer wall.

[0026] The beneficial effects of the present invention are:

[0027] 1. Through reasonable flange design, the threaded holes and gaps in the vacuum chamber are effectively reduced (thread gaps are prone to accumulate stains, mixed with dust, increase the surface area, make it difficult for adsorbed gas to diffuse and difficult to clean, etc.); at the same time, the cooling water channel and the vacuum chamber are reasonably separated, so that water leakage no longer affects the vacuum efficiency.

[0028] 2. Through reasonable lateral suction copper cap, lateral suction during the suction casting process allows the downstream gas-solid mixture to be separated, thereby not directly blocking the casting gas pipe, which can effectively overcome the application blockage problem of the hose direct connection design, improve the reliability of the equipment, increase the success rate, and save application maintenance time and funds; choose high thermal conductivity copper material to make it, so that the solid melt under the diversion can dissipate heat in time when it hits the wall without sticking to the diversion cap body, thereby achieving long-term reliable use.

[0029] 3. The combination of the three sealing rings of the lower frame, the middle frame and the upper frame can effectively ensure the airtightness in the vacuum furnace, reduce the time of vacuuming, and enable the sealing device to use a standard O-ring to achieve effective shaking contact sealing, which can effectively improve the reliability of use. PEEK has sufficient rigidity. The hardness of this material not only ensures our requirements for airtightness, but also does not scratch the ball core due to excessive hardness, affecting the airtightness.

[0030] 4. Effective sealing during shaking is achieved through reasonable contact deformation interference fit design; the reliability of use is effectively improved through the selection of multiple sealing lips; polyurethane is resistant to pollution and is not easy to absorb and diffuse stains, which improves the reliability of the application object and greatly reduces maintenance time.

[0031] Leakage in any link of the vacuum system will cause a decrease in the overall vacuum efficiency. The comprehensive system design proposed in this patent increases the high vacuum pumping time of the melting furnace from 30 minutes per time to 1 minute per time, which greatly saves the time of scientific researchers. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the vacuum high-efficiency arc melting furnace system in the present invention.

[0033] Figure 2 It is a front view of the vacuum high-efficiency arc melting furnace system of the present invention.

[0034] Figure 3 It is a top view of the vacuum high-efficiency arc melting furnace system of the present invention.

[0035] Figure 4 It is a schematic diagram of the overall structure of the copper cap in the present invention;

[0036] Figure 5 It is a front view of the copper cap in the present invention;

[0037] Figure 6 is a cross-sectional view of the copper cap in the present invention;

[0038] Figure 7 FIG. a is a schematic diagram of the overall structure of the crucible in the present invention;

[0039] Figure 8FIG. b is a schematic diagram of the overall structure of the crucible in the present invention;

[0040] Fig. 9 is a front view of the crucible of the present invention;

[0041] Fig.10 for Fig. 9 Sectional view in the AA direction;

[0042] Fig.11 It is a schematic diagram of the overall structure of the crucible body and the water seal base assembled with each other in the present invention;

[0043] Fig.12 for Fig.11 A cross-sectional view of

[0044] Fig.13 It is a schematic diagram of the overall structure of the rocker, the ball core and the rocking vacuum sealing device based on the PEEK sealing frame assembled with each other in the present invention;

[0045] Fig.14 for Fig.13 Section view in the AA direction;

[0046] Fig.15 It is a schematic diagram of the overall structure of the upper skeleton in the present invention;

[0047] Fig.16 is a cross-sectional view of the upper frame of the present invention;

[0048] Fig.17 It is a schematic diagram of the overall structure of the middle skeleton in the present invention;

[0049] Fig.18 is a cross-sectional view of the middle skeleton in the present invention;

[0050] Fig.19 It is a schematic diagram of the overall structure of the lower skeleton in the present invention;

[0051] Fig. 20 is a cross-sectional view of the lower frame of the present invention;

[0052] Fig.21 A cross-sectional view of the rocker, the ball core and the rocking vacuum sealing device based on the polyurethane sealing ring in the present invention being assembled with each other;

[0053] Fig. 22 It is a schematic diagram of the overall structure of the upper positioning ring and the lower positioning ring in the present invention;

[0054] Fig.23 It is a cross-sectional view of the upper positioning ring and the lower positioning ring in the present invention;

[0055] Fig.24 It is a schematic diagram of the overall structure of the upper sealing ring in the present invention;

[0056] Fig.25 is a cross-sectional view of the upper sealing ring in the present invention;

[0057] Fig.26 It is a schematic diagram of the overall structure of the lower sealing ring in the present invention;

[0058] Fig. 27 It is a schematic diagram of the overall structure of the dust scraper ring in the present invention;

[0059] Fig.28 A cross-sectional view of the scraper ring of the present invention;

[0060] Fig.29 for Fig.28 A partial enlarged view of II in FIG.

[0061] Fig.30 It is a structural schematic diagram of the valve cover of the vacuum switching valve in the present invention;

[0062] Fig.31 is a cross-sectional view of a valve cover of a vacuum switching valve in the present invention;

[0063] Among them, 1. Argon gas tank; 2. Control panel; 3. Copper cap; 4. Arc furnace; 5. Rocker base; 6. Rocker; 7. Crucible; 8. Diffusion pump; 9. Vacuum pump; 10. Ball core; 11. Nut;

[0064] 3-1, connection port; 3-2, air extraction outlet; 3-3, air extraction pipeline; 3-4, air extraction inlet; 3-5, collection port; 3-6, collection chamber; 3-61, first arc-shaped portion; 3-62, second arc-shaped portion; 3-63, third arc-shaped portion; 3-64, first vertical portion; 3-65, second vertical portion;

[0065] 7-1, mold cavity; 7-2, connecting bottom; 7-3, water sealing groove; 7-4, connecting plate; 7-5, crucible body; 7-6, melting crucible; 7-7, suction casting crucible; 7-8, cooling water channel; 7-81, water hole a; 7-82, water hole b; 7-9, mold cavity outer wall; 7-10, screw hole; 7-11, vacuum sealing groove; 7-12, water seal base;

[0066] A-1, upper frame; A-11, upper outer sealing groove; A-12, upper inner sealing groove; A-13, upper arc-shaped portion; A-2, middle frame; A-21, middle outer sealing groove; A-22, middle inner sealing groove; A-23, middle arc-shaped portion; A-3, lower frame; A-31, lower outer sealing groove; A-32, lower arc-shaped portion; A-33, lower inclined portion;

[0067] B-1, upper positioning ring; B-11, upper inclined portion; B-12, upper arc-shaped portion; B-2, upper sealing ring; B-21, upper sealing lip; B-3, lower sealing ring; B-31, lower sealing lip; B-4, scraper ring; B-41, scraper groove; B-42, scraper arm; B-43, scraper gap; B-5, lower positioning ring; B-51, outer sealing groove; B-52, lower arc-shaped portion; B-53, lower inclined portion. DETAILED DESCRIPTION

[0068] The present invention is further described below in conjunction with the accompanying drawings.

[0069] Example 1

[0070] like Figure 1 , Figure 2 and Figure 3 As shown, a vacuum high-efficiency arc melting furnace system includes an argon tank 1, an arc furnace 4, a diffusion pump 8, and a vacuum pump 9. The argon tank 1 is connected to the arc furnace 4 through a gas pipeline, and argon is filled into the arc furnace 4 through the argon tank 1. A control panel 2 is arranged above the arc furnace 4, and the arc furnace 4 is controlled by the control panel 2. The top of the arc furnace 4 is connected to the rocker base 5 and the rocker 6, and the bottom of the arc furnace 4 is connected to the copper cap 3 through the crucible 7. The side of the arc furnace 4 is connected to the diffusion pump 8 through a pipeline, and the arc furnace 4 is connected to the vacuum pump 9 through a gas pipeline. The vacuum switching valve cover 12 on the arc furnace 4 is set as an integrated structure, and the vacuum pump 9 is turned on to control the arc furnace 4 to be evacuated.

[0071] Another embodiment of the present invention, as Figure 4 , Figure 5 and Figure 6 As shown, an anti-clogging lateral suction copper cap device applied to a suction casting smelting furnace comprises a connecting port 3-1, a collecting chamber 3-6 and a suction pipe 3-3.

[0072] The upper end of the collecting chamber 3-6 is set as a connecting port 3-1, which is connected to the smelting furnace through the connecting port 3-1; the exhaust pipe 3-3 is set on a side wall of the collecting chamber 3-6, and the free end of the exhaust pipe 3-3 is set as an exhaust outlet 3-2, and the exhaust outlet 3-2 is connected to the exhaust pump; the base of the exhaust pipe 3-3 is set as an exhaust inlet 3-4, and the exhaust pipe 3-3 is connected to the collecting chamber 3-6 through the exhaust inlet 3-4 to form an integrated structure, and the exhaust pipe 3-3 is controlled by the exhaust pump to lateral suction during the suction casting process, thereby controlling the separation of the gas-solid mixture flowing down along the collecting port 3-5 to the collecting chamber 3-6.

[0073] The copper material with high thermal conductivity is selected to control the heat dissipation of the solid melt under the diversion along the wall of the collection chamber 3-6. The copper bottom cap is made of pure copper with a thermal conductivity of 386.4w / (mk), which shows high thermal conductivity compared with brass (thermal conductivity of 108.9 / (mk)), beryllium copper (thermal conductivity of 195w / (mk)), and traditional stainless steel (thermal conductivity of 10~30w / (m•℃)).

[0074] Another embodiment of the present invention, as Figure 4 , Figure 5 and Figure 6 As shown, the interior of the air extraction pipeline is set as a tubular structure, the air extraction pipeline is inserted into the air extraction outlet 3-2 and the air extraction pipeline 3-3, and the outer wall of the free end of the air extraction outlet 3-2 is set as a gradual port, and the gradual port is set as a truncated cone-shaped gradually expanding inlet from the outside to the inside. The special structural design of the port can ensure fast and convenient insertion, while increasing the contact area between the air extraction pipeline and the port to avoid falling off, and the sealing effect is good.

[0075] The height position of the exhaust outlet 3-2 of the exhaust pipe 3-3 is ≥ the height position of the exhaust inlet 3-4 ≥ the upper end position of the collection chamber 3-6. The exhaust pipe 3-3 is used to transmit the sucked gas, and the exhaust inlet 3-4 and the exhaust outlet 3-2 of the exhaust pipe 3-3 are used to extract the gas in the vacuum chamber. The exhaust pipe 3-3 is designed to be horizontal or inclined upward to prevent the collected matter in the collection chamber 3-6 from flowing out with the air flow, while ensuring a good exhaust effect.

[0076] Another embodiment of the present invention, as Figure 4 , Figure 5 and Figure 6 As shown, the collecting chamber 3-6 is extended to the end close to the air extraction inlet 3-4 to form a first arc-shaped portion 3-61, and the collecting chamber 3-6 is extended to the end away from the air extraction inlet 3-4 to form a third arc-shaped portion 3-63. The upper ends of the first arc-shaped portion 3-61 and the third arc-shaped portion 3-63 are flush with the air extraction inlet 3-4, and the lower ends of the first arc-shaped portion 3-61 and the third arc-shaped portion 3-63 are connected by the second arc-shaped portion 3-62 to form a hemispherical cavity. The collecting chamber 3-6 is used to collect liquid residues and cool and solidify them. It is an integrated structure, which is easy to process and manufacture, and can also improve the sealing effect of the air extraction process.

[0077] Another embodiment of the present invention, as Figure 4 , Figure 5 and Figure 6As shown, the connection port 3-1 is extended outwardly in an annular shape along the top of the collecting chamber 3-6 to form an outer flange, the first arc portion 3-61 is extended upward to form a first vertical portion 3-64, the third arc portion 3-63 is extended upward to form a second vertical portion 3-65, and the tops of the first vertical portion 3-64 and the second vertical portion 3-65 are vertically connected to the outer flange of the connection port 3-1. The first vertical portion 3-64 and the second vertical portion 3-65 play a role in drainage, and at the same time can improve the heat dissipation effect when the solid melt touches the wall of the collecting chamber 3-6.

[0078] Another embodiment of the present invention, as Figures 7 to 10 As shown, a vacuum high-efficiency integrated copper crucible used in an arc melting furnace includes a crucible body 7-5,

[0079] The top of the crucible body 7-5 is connected to the arc melting furnace, a suction casting crucible 7-7 is arranged at the center of the top of the crucible body 7-5, and melting crucibles 7-6 are arranged around the suction casting crucible 7-7. The bottom of the suction casting crucible 7-7 extends downward in an integrated manner to form a mold cavity 7-1;

[0080] A cooling water channel 7-8 is provided at the bottom end of the crucible body 7-5, and the cooling water channel 7-8 is coaxially arranged with the outer wall 7-9 of the mold cavity as the center to form a circular labyrinth structure;

[0081] The outer side wall of the bottom end of the mold cavity 7-1 is convex outwardly and is arranged to be connected to the bottom 7-2. The bottom end of the crucible body 7-5 is connected to a copper cap through the bottom 7-2, and the molten material is collected through the copper cap.

[0082] The specific operation process is as follows: when in use, the integrated copper crucible is connected to the vacuum melting furnace, and at high temperature, the solid metal melts into liquid metal and is placed in the melting crucible. After the mold is loaded into the mold cavity 7-1, the external vacuum pump valve is opened to start suction casting, and the molten metal in the melting crucible is moved into the suction casting crucible 7-7 by a tool, and the molten metal flows into the mold in the mold cavity 7-1 along the hole and is cooled and formed.

[0083] The mold cavity in the present invention is used to hold the suction casting mold, the metal is melted by the smelting crucible, and the molten metal to be suction cast is held by the suction casting crucible; the special structure of the water sealing groove can ensure that the cooling water can circulate outside the copper crucible without leakage.

[0084] In another embodiment of the present invention, the melting crucible 7-6 and the suction casting crucible 7-7 are both configured as hemispherical structures, the melting crucible 7-6 is used to melt metal, the suction casting crucible 7-7 is used to hold molten metal to be suction cast, the bottom of the suction casting crucible 7-7 and the upper end of the mold cavity 7-1 are interconnected as an integrated structure, the suction casting crucible 7-7 and the mold cavity 7-1 are interconnected to form a built-in cavity with a through hole on the top, which is used to hold the suction casting mold.

[0085] A vacuum sealing groove 7-11 is formed between the crucible body 7-5 and the arc melting furnace. The vacuum sealing groove 7-11 is embedded and extends into the connecting plate 7-4 along the bottom of the outer wall of the crucible body 7-5 to form an annular groove structure. The vacuum sealing groove 7-11 is connected to the vacuum furnace above to ensure airtightness.

[0086] The upper end of the connecting bottom 7-2 is annularly embedded as a water sealing groove 7-3. The water sealing groove 7-3 is arranged as several annular grooves with equal intervals from top to bottom, which cooperate with the water seal base 7-12 to form a water seal, greatly improving the sealing effect.

[0087] The vacuum sealing groove in the present invention is connected to the upper vacuum furnace to ensure airtightness and effectively reduce the threaded holes and gaps in the vacuum chamber. The integrated structure of the crucible and the water seal base design in the present invention overcome the technical problems in the prior art such as easy accumulation of stains and dust in the thread gaps, difficulty in diffusion of adsorbed gases, and difficulty in cleaning.

[0088] Another embodiment of the present invention, as Fig.11 and Fig.12 As shown, a water seal base 7-12 is also provided, and a connecting plate 7-4 is extended outward on all sides of the crucible body 7-5, and screw holes 7-10 are arranged at equal intervals on the connecting plate 7-4. The crucible body 7-5 is connected to the water seal base 7-12 through the screw holes 7-10 of the connecting plate 7-4, and a cooling water channel 7-8 is formed by a sealed gap between the crucible body 7-5 and the water seal base 7-12.

[0089] like Fig.11 and Fig.12 As shown, the water seal base 7-12 is set as a sleeve structure with a through hole in the center, which is sleeved on the outside of the mold cavity 7-1, and the upper end of the sleeve extends outward to be set as an annular connection structure (annular connection part) that is compatible with the connection disk 7-4. The annular connection part is provided with screw holes 7-10 arranged at equal intervals, and is connected to the connection disk 7-4 through the screw holes 7-10, which is convenient and quick to install. The upper surface of the annular connection part is annularly embedded with a vacuum sealing groove 7-11, which is set along the outside of the cooling water channel 7-8, and has a double sealing effect. The connection is located on the outside of the vacuum seal, which effectively improves the airtightness and greatly increases the vacuum pumping rate.

[0090] like Figures 7 to 12 As shown, the cooling water channels 7-8 are arranged in a coaxial circular ring shape from the inside to the outside, and include at least an inner ring cooling water channel and an outer ring cooling water channel. The outer side walls of the inner ring cooling water channel and the outer ring cooling water channel are symmetrically arranged along the longitudinal direction with water holes a7-81 and water holes b7-82, respectively. The water holes a7-81 and the water holes b7-82 are set as square through grooves or hole-type through grooves.

[0091] A cooling water inlet and a cooling water outlet are respectively provided on the water seal base 7-12, and the cooling water inlet and the cooling water outlet are both interconnected with the cooling water channel 7-8.

[0092] The cooling water channel of the present invention adopts a labyrinth structure so that the water flow fully contacts the surface of the integrated copper crucible, which plays a good heat dissipation role; at the same time, the cooling water channel and the vacuum cavity are reasonably separated, so that water leakage no longer affects the vacuum efficiency.

[0093] The specific operation process is: water flows into the water seal base 7-12 along the cooling water inlet, and is injected along the maze structure formed by the inner ring cooling water channel and the outer ring cooling water channel respectively, that is, water first enters the inner ring cooling water channel along the cooling water inlet, and after the water in the inner ring cooling water channel is filled, it is injected into the outer ring cooling water channel through the water hole a7-81 until the outer ring cooling water channel is filled, and then injected outward along the water hole b7-82 until the entire cooling water channel 7-8 is filled, and the cooling water flows out along the cooling water outlet, forming a cooling water circulation in turn, cooling the crucible body 7-5, and improving the heat dissipation effect when the solid melt touches the wall.

[0094] The crucible body 7-5 is made of pure copper to form an integrated part. The copper bottom cap is made of pure copper with a thermal conductivity of 386.4w / (mk), which is higher than brass (108.9 / (mk)), beryllium copper (195w / (mk)), and traditional stainless steel (10~30w / (m•℃)). The integrated structure is easy to process and manufacture, and can also improve the sealing effect of the exhaust process.

[0095] In another embodiment of the present invention, the shaking vacuum sealing device of the PEEK sealing frame provided by the present invention is as follows: Fig.13 and Fig.14 As shown, a shaking vacuum sealing device of a PEEK sealing skeleton comprises a rocking arm 6, a ball core 10, an upper skeleton A-1, a middle skeleton A-2, and a lower skeleton A-3, wherein the upper skeleton A-1, the middle skeleton A-2, and the lower skeleton A-3 are coaxially arranged from top to bottom, and the upper skeleton A-1, the middle skeleton A-2, and the lower skeleton A-3 are adjacent to each other from top to bottom to form a sealing cavity, and the sealing cavity is arranged as a spherical cavity matching the outer shape of the ball core 10, and the outer side of the ball core 10 is arranged as a spherical structure as a whole, and the ball core 10 is embedded in the sealing cavity, and the rocking arm 6 is arranged as a hollow cylindrical sleeve structure, and the inside of the ball core 10 is provided with a hollow cylindrical cavity consistent with the inner cavity of the rocking arm 6, that is, the upper end of the ball core 10 is connected to the rocking arm 6, the sleeve inner cavity of the rocking arm 6 extends into the ball core 10, and the upper end of the rocking arm 6 extends to the outside of the sealing cavity.

[0096] The upper skeleton A-1, the middle skeleton A-2, and the lower skeleton A-3 are installed in the rocker base 5 from top to bottom through the upper outer sealing groove A-11, the middle outer sealing groove A-21, and the lower outer sealing groove A-31 opened thereon respectively. The upper skeleton A-1, the middle skeleton A-2, and the lower skeleton A-3 are all arranged as an annular structure, and the upper and lower end faces of the upper skeleton A-1, the middle skeleton A-2, and the lower skeleton A-3 are tangentially adjacent to each other; the upper end of the rocker base 5 is screwed with a nut 11 through a thread, and the upper skeleton A-1 is clamped by the nut 11, and the ball core 10 is embedded in the sealing cavity through a sealing strip, and can be rotated along the sealing cavity, which has a good sealing effect.

[0097] The specific usage process is as follows:

[0098] When in use, the rocker base 5 is connected to the upper part of the vacuum melting furnace through the screw hole opened thereon, and the integrated copper crucible is connected to the lower part of the vacuum melting furnace. After turning on the power, the head of the arc gun heats up rapidly, and the arc gun is rotated through the ball core 10 (ball hinge) inside the rocker base 5, and its head is aimed at the solid metal to be melted. The solid metal melts into liquid metal at high temperature and is placed in the melting crucible. After the mold is loaded into the mold cavity, the external vacuum pump valve is opened to start suction casting. The molten metal in the melting crucible is moved into the suction casting crucible by an instrument, and the molten metal is retained in the mold in the mold cavity along the hole and cooled to form.

[0099] Comparative Example

[0100] An independent sealing sleeve is designed to be consistent with the shape of the outer wall of the ball core 10, and the inner side of the independent sealing sleeve is set as an arc-shaped spherical structure, and is fitted with the ball core 10 through the arc-shaped spherical structure.

[0101] Experimental results: The independent sealing sleeve easily absorbs dust, affecting the airtightness. The airtight system needs to be maintained and replaced in less than three months.

[0102] The shaking vacuum sealing device of the PEEK sealing frame provided in the present invention is not easy to absorb dust, has good air tightness, and has good long-term performance, and does not require regular maintenance and replacement of the airtight system.

[0103] like Fig.13 and Fig.14 As shown, a rocker base 5 is also provided, and the upper end portion of the rocker base 5 is set as a hollow cylinder. The upper frame A-1, the middle frame A-2 and the lower frame A-3 are installed in the rocker base 5 in sequence through the upper outer sealing groove A-11, the middle outer sealing groove A-21 and the lower outer sealing groove A-31 in which the sealing strips are embedded synchronously. The upper and lower end surfaces of the upper frame A-1, the middle frame A-2 and the lower frame A-3 are tangentially adjacent to each other.

[0104] An inner annular rib is extended inward in an annular manner on the inner side of the lower end of the rocker base 5, and the rocker base 5 is clamped on the outer side of the lower end of the ball core 10 through the inner annular rib; a connecting flange is extended outward in an annular manner on the outer side of the lower end of the rocker base 5, and screw holes are arranged in an annular manner with equal intervals on the connecting flange, which is connected to the smelting furnace through the screw holes.

[0105] A nut 11 is also provided, which is screwed onto the outer wall of the upper end of the rocker base 5 through a thread, and an outer annular rib is provided extending inward in an annular manner along the upper end of the nut 11. The nut 11 is clamped onto the outer part of the upper end of the ball core 10 through the outer annular rib.

[0106] The technical solution of the present invention places three specially designed sealing rings of the lower frame A-3, the middle frame A-2, and the upper frame A-1 coaxially from bottom to top, and the three surround the ball core 10. The combination of the three sealing rings of the lower frame A-3, the middle frame A-2, and the upper frame A-1 can effectively ensure the airtightness in the vacuum furnace. The material of the lower frame A-3 is made of polytetrafluoroethylene, and the overall sealing system is fixed inside the rocker base 5, which also plays a certain sealing role; the middle frame A-2 and the upper frame A-1 are both made of peek material. The hardness of this material not only guarantees our requirements for airtightness, but also does not scratch the ball core 10 due to excessive hardness, affecting the airtightness. At the same time, sealing grooves are respectively provided on the middle frame A-2 and the upper frame A-1 for placing common sealing O-rings. The O-ring located on the outside is used for sealing between the rocker base 5 and the sealing ring, and the O-ring located on the inside is used for sealing between the sealing ring and the ball core 10, which ensures the airtightness of the device as a whole.

[0107] Another embodiment of the present invention, as Fig.15 and Fig.16 As shown, the upper skeleton A-1 is configured as an annular structure, the outer side wall of the upper skeleton A-1 is configured as a cylindrical structure, an upper outer sealing groove A-11 is arranged in a ring shape along the outer side wall of the upper skeleton A-1, the inner side wall of the upper skeleton A-1 is configured as an upper arc portion A-13, the curvature of the upper arc portion A-13 is configured to be consistent with the curvature of the outer wall of the core 10, the upper arc portion A-13 is configured as an arc-shaped curved surface structure that is mutually compatible with the outer side wall of the core 10, an embedded upper inner sealing groove A-12 is arranged in a ring shape along the inner wall of the upper arc portion A-13, and a sealing strip is embedded in the upper inner sealing groove A-12 and the upper outer sealing groove A-11.

[0108] like Fig.17 and Fig.18As shown, the middle skeleton A-2 is configured as an annular structure, the outer wall of the middle skeleton A-2 is configured as a cylindrical structure, and the middle and outer sealing grooves A-21 are arranged in a ring shape along the outer wall of the middle skeleton A-2, and the inner wall of the middle skeleton A-2 is configured as a middle arc portion A-23, and the curvature of the middle arc portion A-23 is configured to be consistent with the curvature of the outer wall of the core 10, and the middle arc portion A-23 is configured as an arc-shaped curved surface structure that is mutually compatible with the outer wall of the core 10, and embedded middle and inner sealing grooves A-22 are arranged in a ring shape along the inner wall of the middle arc portion A-23, and several sealing rings are respectively embedded in the middle and inner sealing grooves A-22 and the middle and outer sealing grooves A-21.

[0109] like Fig.19 and Fig. 20 As shown, the lower skeleton A-3 is configured as an annular structure, the outer side wall of the lower skeleton A-3 is configured as a cylindrical structure, and a lower outer sealing groove A-31 is arranged in an annular manner along the outer side wall of the lower skeleton A-3, and the inner side wall of the lower skeleton A-3 is sequentially configured as a lower arc portion A-32 and a lower inclined portion A-33 from top to bottom, and the curvature of the lower arc portion A-32 is configured to be consistent with the curvature of the outer wall of the ball core 10, and the lower arc portion A-32 is configured as an arc-shaped curved surface structure that is mutually compatible with the outer side wall of the ball core 10, and the sealing ring is embedded in the lower outer sealing groove A-31, and the angle between the lower inclined portion A-33 and the external tangent of the ball core 10 is configured as an acute angle, and the lower inclined portion A-33 is an outward-expanding structure as a whole, and the inner diameter of the lower inclined portion A-33 is larger than the outer diameter of the lower port of the ball core 10.

[0110] Another embodiment of the present invention, as Fig.21 As shown, a shaking sealing device for vacuum equipment based on a polyurethane sealing ring includes a rocking arm 6, a ball core, an upper positioning ring B-1, an upper sealing ring B-2, a lower sealing ring B-3, a scraping ring B-4, and a lower positioning ring B-5. The upper positioning ring B-1, the upper sealing ring B-2, the lower sealing ring B-3, and the scraping ring B-4 are coaxially arranged from top to bottom, and the upper positioning ring B-1, the upper sealing ring B-2, the lower sealing ring B-3, and the scraping ring B-4 are adjacent to each other from top to bottom to form a sealed cavity. The sealed cavity is set as a spherical cavity that matches the shape of the ball core. The ball core is embedded in the sealed cavity. The upper end of the ball core is connected to the rocking arm 6, and the upper end of the rocking arm 6 extends to the outside of the sealed cavity.

[0111] An inner annular rib is extended inward in an annular manner on the inner side of the lower end of the rocker base 5, and the rocker base 5 is clamped on the outer side of the lower end of the ball core through the inner annular rib; a connecting flange is extended outward in an annular manner on the outer side of the lower end of the rocker base 5, and screw holes are arranged in an annular manner with equal intervals on the connecting flange, which is connected to the smelting furnace through the screw holes.

[0112] A nut is also provided, which is screwed onto the outer wall of the upper end of the rocker base 5 through a thread, and an outer annular rib is provided inwardly extending in a ring shape along the upper end of the nut, and the nut is clamped on the outer part of the upper end of the ball core through the outer annular rib.

[0113] The specific usage process is as follows:

[0114] When in use, the rocker base 5 is connected to the upper part of the vacuum melting furnace through the screw hole opened thereon, and the integrated copper crucible is connected to the lower part of the vacuum melting furnace. After turning on the power, the head of the arc gun heats up rapidly, and the arc gun is rotated through the ball core (ball hinge) inside the rocker base 5, and its head is aimed at the solid metal to be melted. The solid metal melts into liquid metal at high temperature and is placed in the melting crucible. After the mold is loaded into the mold cavity, the external vacuum pump valve is opened to start suction casting. The molten metal in the melting crucible is moved into the suction casting crucible by an instrument, and the molten metal is retained in the mold in the mold cavity along the hole and cooled to form.

[0115] Compared with the comparative example, the vacuum equipment shaking sealing device based on the polyurethane sealing ring provided by the present invention is not easy to absorb dust, has better air tightness and good long-term use performance, and does not need to regularly spend time on maintenance and replacement of the airtight system.

[0116] Another embodiment of the present invention, as Fig.21 As shown, the technical solution of the present invention arranges the upper positioning ring B-1, the upper sealing ring B-2, the lower sealing ring B-3, and the scraper ring B-4 coaxially from top to bottom. The upper positioning ring B-1, the upper sealing ring B-2, the lower sealing ring B-3, and the scraper ring B-4 are adjacent to each other from top to bottom to form a sealed cavity, which surrounds the ball core.

[0117] A rocker base 5 is also provided, and the upper end portion of the rocker base 5 is arranged as a hollow cylinder, the upper positioning ring B-1 and the upper sealing ring B-2 are adjacent, the end faces of the upper sealing ring B-2 and the lower sealing ring B-3 are tangentially adjacent, the lower sealing ring B-3 and the scraper ring B-4 are adjacent, the end faces of the scraper ring B-4 and the lower positioning ring B-5 are tangentially adjacent, and the lower positioning ring B-5 is installed in the rocker base 5 through an outer sealing groove B-51 embedded with a sealing strip; the upper end of the rocker base 5 is screwed with a nut through a thread, and the upper positioning ring B-1 is clamped through the nut, and the ball core is embedded in the sealing cavity through the sealing strip and can rotate along the sealing cavity, thereby achieving a good sealing effect.

[0118] Another embodiment of the present invention, as Fig. 22 , Fig.23As shown, the upper positioning ring B-1, the upper sealing ring B-2, the lower sealing ring B-3, and the scraper ring B-4 are specially designed to be coaxially placed from top to bottom, which can effectively ensure the airtightness in the vacuum furnace, that is, the overall sealing system is fixed inside the rocker base 5, and also plays a certain sealing role; the upper sealing ring B-2, the lower sealing ring B-3 and the scraper ring B-4 are made of polyurethane material, which is not easy to absorb dust. The hardness of this material not only ensures our requirements for airtightness, but also does not scratch the ball core due to excessive hardness. The upper positioning ring B-1 and the lower positioning ring B-5 are made of polytetrafluoroethylene material, and the position of the overall sealing set is fixed by the upper positioning ring B-1 and the lower positioning ring B-5. The use of O-rings is minimized, and the sealing ring can be used independently for sealing, without the auxiliary sealing of the O-ring. Only the sealing groove is installed on the lower positioning ring B-5 for placing the O-ring, which is a redundant sealing design.

[0119] like Fig. 22 , Fig.23 As shown, the upper positioning ring B-1 is set as an annular structure, the inner side wall of the upper positioning ring B-1 is sequentially set as an upper inclined portion B-11 and an upper arc portion B-12 from top to bottom, the curvature of the upper arc portion B-12 is set to be consistent with the curvature of the outer wall of the ball core, the upper arc portion B-12 is set as an arc surface structure that matches the outer wall of the ball core, the angle between the upper inclined portion B-11 and the outer tangent of the ball core is set to an acute angle, the upper inclined portion B-11 is an outward expansion structure as a whole, and the inner diameter of the upper inclined portion B-11 is greater than the outer diameter of the upper port of the ball core. The position of the overall sealing set is fixed by the upper positioning ring B-1.

[0120] like Fig. 22 , Fig.23 As shown, the lower positioning ring B-5 is set as an annular structure, the outer wall of the lower positioning ring B-5 is set as a cylindrical barrel structure, and an outer sealing groove B-51 is arranged in an annular manner along the outer wall of the lower positioning ring B-5. The inner wall of the lower positioning ring B-5 is sequentially set as a lower arc portion B-52 and a lower inclined portion B-53 from top to bottom. The curvature of the lower arc portion B-52 is set to be consistent with the curvature of the outer wall of the ball core. The lower arc portion B-52 is set as an arc surface structure that matches the outer wall of the ball core. The sealing ring is embedded in the outer sealing groove B-51, and the angle between the lower inclined portion B-53 and the outer tangent of the ball core is set as an acute angle. The lower inclined portion B-53 is an outward expansion structure as a whole, and the inner diameter of the lower inclined portion B-53 is larger than the outer diameter of the lower port of the ball core. The position of the overall sealing set is fixed by the lower positioning ring B-5.

[0121] like Fig.24 , Fig.25 and Fig.26As shown, the upper sealing ring B-2 and the lower sealing ring B-3 have the same structure, and are both set to an annular structure. The upper sealing lip B-21 and the lower sealing lip B-31 are arranged in an annular manner along the upper end surface of the upper sealing ring B-2 and the lower end surface of the lower sealing ring B-3, respectively, so that the cross-section of the upper sealing ring B-2 and the lower sealing ring B-3 is set to a "Y"-shaped structure. The upper sealing ring B-2 and the lower sealing ring B-3 are made of elastic material. When they are installed in the rocker base, the two sides of the upper sealing ring B-2 and the lower sealing ring B-3 are subjected to extrusion force, and the V-shaped openings of the upper sealing lip B-21 and the lower sealing lip B-31 are pressed together. At this time, the inner side walls of the upper sealing ring B-2 and the lower sealing ring B-3 are both set to arc walls, and the arc walls are set to an arc surface structure that matches the outer side wall of the ball core; the outer side walls of the upper sealing ring B-2 and the lower sealing ring B-3 fit in the rocker base, which has a good sealing effect.

[0122] like Fig. 27 , Fig.28 and Fig.29 As shown, the scraper ring B-4 is configured as an annular structure, the scraper inner wall of the scraper ring B-4 on the side close to the ball core extends inwardly to be configured as a scraper arm B-42, the scraper arm B-42 is configured as an arc-shaped curved surface structure that is compatible with the outer wall of the ball core, the scraper outer wall of the scraper ring B-4 on the side away from the ball core is configured as a cylindrical structure, and a scraper groove B-41 is configured inwardly along the lower bottom surface of the scraper ring between the scraper inner wall and the scraper outer wall.

[0123] The scraper groove B-41 is in a concave arc structure along the lower end surface of the scraper ring B-4, the free end of the scraper arm B-42 is higher than the lower bottom edge of the outer wall of the scraper, and the height difference between the two forms a scraper gap B-43, and the scraper gap B-43 and the scraper groove B-41 are connected to each other. A scraper collection chamber is formed along the scraper gap B-43 and gradually extends into the scraper groove B-41 to collect dust scraped from the ball core, that is, by adding the scraper ring B-4, the dust on the ball core can be removed.

[0124] The specific operation process is:

[0125] When the ball core rotates along the sealing cavity, the scraper arm B-42 scrapes off the dust at the bottom of the ball core, and the dust enters the scraper groove B-41 along the scraper gap B-43 at the lower end of the scraper arm B-42. The dust on the outer wall of the ball core is collected and removed by this structure, which prevents the dust on the outer wall of the ball core from entering the sealing ring upward, thereby ensuring the sealing inside the sealing cavity.

[0126] Another embodiment of the present invention, as Fig.30 and Fig.31As shown, the vacuum switching valve bonnet includes an upper end bonnet and a lower end base, and the upper end bonnet and the lower end base are connected in an integrated manner to ensure air tightness. The upper end bonnet and the lower end base are both hollow cylindrical structures, the inner cavity of the lower end base and the inner cavity of the upper end bonnet are interconnected, the outer diameter of the lower end base is larger than the outer diameter of the upper end bonnet, and a sealing sheet is embedded in the inner wall of the lower end base. By adding several sets of sealing sheets as shaft seals at the moving shaft, the sealing effect at the shaft is ensured. The integrated vacuum switching valve bonnet improves the reliability during the switching process and is convenient to use.

[0127] The above description is not a limitation of the present invention. It should be pointed out that for ordinary technicians in this technical field, several changes, modifications, additions or substitutions can be made without departing from the essential scope of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. Vacuum high-efficiency arc melting furnace system, characterized by: It includes an argon tank, an arc furnace, a diffusion pump, and a vacuum pump. The argon tank is connected to the arc furnace through a gas pipeline. Argon gas is filled into the arc furnace through the argon tank. The top of the arc furnace is connected to the rocker through a rocker base. The bottom of the arc furnace is connected to a copper cap through a crucible. The side of the arc furnace is connected to the diffusion pump through a pipeline. The arc furnace is connected to the vacuum pump through a gas pipeline. The vacuum switching valve cover on the arc furnace is set as an integrated structure. The vacuum pump is turned on to control the vacuuming of the arc furnace. The crucible comprises a crucible body, the top of the crucible body is connected to the arc melting furnace, a suction casting crucible is arranged at the center of the top of the crucible body, melting crucibles are arranged around the suction casting crucible, and the bottom of the suction casting crucible extends downward in an integrated manner to form a mold cavity; A cooling water channel is arranged at the bottom end of the crucible body, and the cooling water channel is coaxially arranged with the outer wall of the mold cavity as the center to form a circular maze structure; The outer side wall of the bottom end of the mold cavity is convex outwardly and is arranged to be connected to the bottom, and the bottom end of the crucible body is connected to the copper cap through the connecting bottom, and the molten material is collected through the copper cap; The crucible body is made of pure copper to form an integrated part. A vacuum sealing groove is formed between the crucible body and the arc melting furnace. The vacuum sealing groove is embedded in the connecting plate along the bottom of the outer wall of the crucible body to form an annular groove structure; the upper end of the connecting bottom is annularly embedded and set as a water sealing groove; A water seal base is also provided, and the crucible body is extended outwardly around a connecting plate, and screw holes are arranged at equal intervals on the connecting plate. The crucible body is connected to the water seal base through the screw holes of the connecting plate, and a cooling water channel is formed by a sealed interval between the crucible body and the water seal base; the water seal base is provided as a sleeve structure with a through hole in the center, which is sleeved on the outside of the mold cavity, and the upper end of the sleeve extends outward to provide an annular connecting structure that is mutually compatible with the connecting plate.

2. The vacuum high-efficiency arc melting furnace system according to claim 1, characterized in that: The copper cap includes a connecting port, a collecting chamber and an exhaust pipe. The upper end of the collecting chamber is set as a connecting port, which is connected to the smelting furnace through the connecting port. The exhaust pipe is set on a side wall of the collecting chamber, and the free end of the exhaust pipe is set as an exhaust outlet, which is connected to an exhaust pump. The base of the exhaust pipe is set as an exhaust inlet, and the exhaust pipe is connected to the collecting chamber through the exhaust inlet to form an integrated structure. The exhaust pipe is controlled by the exhaust pump to laterally absorb air during the suction casting process, thereby controlling the separation of the gas-solid mixture flowing down to the collecting chamber.

3. The vacuum high-efficiency arc melting furnace system according to claim 2, characterized in that: The copper cap is made of copper material with high thermal conductivity to control the heat dissipation of the solid melt under the diversion as it touches the wall of the collecting chamber; the interior of the exhaust pipe is arranged as a tubular structure, the exhaust pipe is plugged into the exhaust pipe through the exhaust outlet, the outer wall of the free end of the exhaust outlet is arranged as a gradual port, and the gradual port is arranged as a truncated cone-shaped gradually expanding inlet from the outside to the inside; the height position of the exhaust outlet of the exhaust pipe ≥ the height position of the exhaust inlet ≥ the upper end position of the collecting chamber.

4. The vacuum high-efficiency arc melting furnace system according to claim 1, characterized in that: A shaking vacuum sealing device based on a PEEK sealing frame is also provided, which includes a rocker, a ball core, an upper frame, a middle frame, and a lower frame. The upper frame, the middle frame, and the lower frame are coaxially arranged from top to bottom, and the upper frame, the middle frame, and the lower frame are adjacent to each other from top to bottom to form a sealed cavity. The sealed cavity is set as a spherical cavity that matches the shape of the ball core. The ball core is embedded in the sealed cavity. The upper end of the ball core is connected to the rocker, and the upper end of the rocker extends to the outside of the sealed cavity.

5. The vacuum high-efficiency arc melting furnace system according to claim 4, characterized in that: The upper frame is configured as an annular structure, the outer side wall of the upper frame is provided with an upper outer sealing groove arranged in an annular manner, the inner side wall of the upper frame is configured as an upper arc-shaped portion, and an embedded upper inner sealing groove is arranged in an annular manner along the inner wall of the upper arc-shaped portion, and several sealing rings are respectively embedded in the upper inner sealing groove and the upper outer sealing groove; The middle frame is configured as an annular structure, the outer wall of the middle frame is provided with middle and outer sealing grooves arranged in an annular manner, the inner wall of the middle frame is configured as a middle arc-shaped portion, and an embedded middle and inner sealing groove is arranged in an annular manner along the inner wall of the middle arc-shaped portion, and several sealing rings are respectively embedded in the middle and inner sealing grooves and the middle and outer sealing grooves; The lower frame is configured as an annular structure, the outer side wall of the lower frame is provided with lower outer sealing grooves arranged in an annular manner, the sealing ring is embedded in the lower outer sealing groove, and the inner side wall of the lower frame is sequentially configured as a lower arc portion and a lower inclined portion from top to bottom.

6. The vacuum high-efficiency arc melting furnace system according to claim 1, characterized in that: A vacuum equipment shaking sealing device based on a polyurethane sealing ring is also provided, which includes a rocker, a ball core, an upper positioning ring, an upper sealing ring, a lower sealing ring, a scraper ring, and a lower positioning ring. The upper positioning ring, upper sealing ring, lower sealing ring, and scraper ring are coaxially arranged from top to bottom, and the upper positioning ring, upper sealing ring, lower sealing ring, and scraper ring are adjacent to each other from top to bottom to form a sealed cavity. The sealed cavity is set as a spherical cavity that matches the shape of the ball core. The ball core is embedded in the sealed cavity. The upper end of the ball core is connected to the rocker, and the upper end of the rocker extends to the outside of the sealed cavity.

7. The vacuum high-efficiency arc melting furnace system according to claim 6, characterized in that: The upper positioning ring is configured as an annular structure, and the inner side wall of the upper positioning ring is configured as an upper inclined portion and an upper arc portion in sequence from top to bottom; The lower positioning ring is configured as an annular structure, an outer sealing groove is arranged in an annular manner along the outer side wall of the lower positioning ring, the inner side wall of the lower positioning ring is sequentially configured as a lower arc portion and a lower inclined portion from top to bottom, and the sealing ring is embedded in the outer sealing groove; The upper sealing ring and the lower sealing ring have the same structural configuration, and are both configured as an annular structure. An upper sealing lip and a lower sealing lip are respectively arranged in an annular shape along the upper end surface of the upper sealing ring and the lower end surface of the lower sealing ring. The cross sections of the upper sealing ring and the lower sealing ring are both configured as a "Y"-shaped structure. The scraper ring is arranged as an annular structure, the scraper inner wall on the side of the scraper ring close to the ball core extends inwardly to be arranged as a scraper arm, the scraper outer wall on the side of the scraper ring away from the ball core is arranged as a cylindrical structure, and a scraper groove is arranged inwardly along the lower bottom surface of the scraper ring between the scraper inner wall and the scraper outer wall.

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