A vacuum smelting device for medium frequency furnace

Abstract

The present invention discloses a vacuum smelting device for a medium frequency furnace, comprising a furnace body, a load-bearing plate fixedly mounted on the outer side wall of the furnace body, an assembly plate fixedly mounted on the upper end of the load-bearing plate through a pillar, the diverter assembly and the filter assembly are connected through a first air pipe, one end of the bellows penetrates the sealing cover and is connected to the furnace body, a first vacuum pump and a second vacuum pump are respectively fixedly mounted on the load-bearing plate, the power of the first vacuum pump is less than the power of the second vacuum pump, the third air pipe is connected to the second vacuum pump, and the display screen of the diverter assembly can display the vacuum degree in the diverter assembly. The present invention realizes vacuuming operations at different gears, achieves the purpose of high air extraction efficiency and low energy consumption, and has a simple structure and is easy to use, so that the service life of the vacuum gauge is greatly increased, and by detachably mounting a filter plate on the second box body, both the filtering effect is achieved and the disassembly and cleaning are convenient.

Description

Technical Field

[0001] The invention relates to the technical field of medium frequency furnaces, in particular to a vacuum smelting device used in medium frequency furnaces. Background Art

[0002] Vacuum medium frequency furnace is a cycle operation type electric furnace, which is widely used for sintering hard alloy, high temperature alloy, optoelectronic material, functional ceramic, transparent ceramic, powder metallurgy, etc. under high temperature, high vacuum and protective atmosphere. It is also suitable for scientific research, military units, industrial units for powder molding and sintering of refractory alloys such as tungsten, molybdenum and their alloys.

[0003] The existing traditional vacuum medium frequency furnace is composed of a mold cavity, a medium vacuum gauge, a low vacuum gauge, a high vacuum valve, a Roots pump, an oil diffusion pump, a front vacuum pump, a low vacuum valve, etc., among which the Roots pump and the oil diffusion pump are the main vacuum pumps. This type of vacuum medium frequency furnace has the disadvantages of complex structure, low vacuum efficiency and high energy consumption. In addition, the vacuum gauges of the existing vacuum medium frequency furnaces are mostly located in the furnace body. In a long-term high temperature environment, the service life of the vacuum gauge is greatly shortened. Therefore, we need to propose a vacuum smelting device for a medium frequency furnace. Summary of the invention

[0004] The purpose of the present invention is to provide a vacuum smelting device for a medium frequency furnace, which has a simple structure, high exhaust efficiency and low energy consumption, and the vacuum gauge does not need to be used at high temperature, so as to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a vacuum smelting device for a medium frequency furnace, comprising a furnace body, a load-bearing plate is fixedly installed on the outer wall of the furnace body, an assembly plate is fixedly installed on the upper end of the load-bearing plate through a support, and a diversion component and a filter component are fixedly installed on the upper end of the assembly plate;

[0006] The flow splitter assembly is sealed, the flow splitter assembly and the filter assembly are connected via a first air pipe, a bellows is connected to the filter assembly, a sealing cover is sealed at the upper end of the furnace body, and one end of the bellows passes through the sealing cover and is connected to the furnace body;

[0007] A first vacuum pump and a second vacuum pump are respectively fixedly installed on the load-bearing plate, the first vacuum pump and the second vacuum pump are both located below the assembly plate, and the power of the first vacuum pump is less than the power of the second vacuum pump;

[0008] The flow splitter assembly is provided with two groups of air outlets, the two groups of air outlets of the flow splitter assembly are respectively connected to a second air pipe and a third air pipe, the second air pipe is connected to a second vacuum pump, and the third air pipe is connected to the second vacuum pump;

[0009] The display screen of the diverter assembly can display the vacuum degree in the diverter assembly.

[0010] Preferably, a hinge is fixedly installed on one side of the furnace body, one end of the hinge is fixedly connected to one end of the cover, and the other end of the cover is connected to the other side of the furnace body through a buckle;

[0011] A first sealing block is fixedly mounted on the lower end of the sealing cover, the first sealing block is inserted into the furnace body, and the first sealing block and the furnace body are interference fit;

[0012] A transition joint is embedded on the sealing cover, and the transition joint passes through the sealing cover and the first sealing block and is communicated with the furnace body. One end of the bellows is communicated with the transition joint.

[0013] Preferably, the diversion assembly includes a first box body and a display screen, the first box body is fixedly mounted on the upper end of the assembly plate, the display screen is fixedly mounted on the upper end of the first box body, the two groups of air outlets of the first box body both penetrate the assembly plate, the second air pipe and the third air pipe are respectively sealed and inserted in the two groups of air outlets, and one end of the second air pipe and the third air pipe are both located in the first box body, an air pipe joint is embedded in one side of the first box body, and one end of the first air pipe is sealed and inserted in the air pipe joint.

[0014] Preferably, a vacuum gauge is fixedly installed in the first box, and the vacuum gauge is electrically connected to the display screen.

[0015] Preferably, one end of the second air pipe and the third air pipe are both installed with a one-way valve, and the air path directions of the two sets of one-way valves are from the inside of the diverter component to the outside of the diverter component.

[0016] Preferably, the filter assembly includes a second box and a filter plate, the second box is fixedly mounted on the upper end of the assembly plate, the first air pipe and the bellows are both connected to the second box, and the filter plate is sealed and inserted in the second box.

[0017] Preferably, a locking plate is detachably mounted on the upper end of the second box body, a second sealing block is fixedly mounted on the lower end of the locking plate, the filter plate is fixedly mounted on the lower end of the second sealing block, an insertion port is opened on the upper end of the second box body, the second sealing block is located in the insertion port, and the second sealing block has an interference fit with the insertion port.

[0018] Preferably, the locking plate is provided with two groups of fixing holes, bolts are arranged in the fixing holes, the upper end of the second box body is provided with two groups of threaded holes, the two groups of threaded holes are arranged corresponding to the two groups of fixing holes, and one end of the bolt is threadedly installed in the threaded hole.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention is provided with a flow splitter connected to the furnace body, and the flow splitter connected to the first vacuum pump and the second vacuum pump, so that when the furnace body is evacuated, different vacuum pumps can be selected to be turned on according to the vacuum degree, thereby realizing vacuuming operations at different gears, achieving the purpose of high exhaust efficiency and low energy consumption, and having a simple structure and convenient use;

[0021] 2. The present invention provides a sealed shunt assembly, connects the shunt assembly with the furnace body, and installs a vacuum gauge in the shunt assembly, thereby avoiding the vacuum gauge from working in the high temperature environment of the furnace body for a long time, thereby greatly increasing the service life of the vacuum gauge.

[0022] 3. The present invention has a filter plate detachably mounted on the second housing, and the filter plate is sealed and plugged with the second housing, thereby achieving the filtering effect and facilitating disassembly and cleaning, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 It is a schematic structural diagram of the sealing cover of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the flow diversion component of the present invention;

[0026] Figure 4 It is a schematic diagram of the structure of the filter assembly of the present invention;

[0027] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0028] In the figure: 1. furnace body; 2. load-bearing plate; 3. pillar; 4. assembly plate; 5. diversion assembly; 6. filter assembly; 7. first air pipe; 8. bellows; 9. threaded hole; 10. second air pipe; 11. third air pipe; 12. first vacuum pump; 13. second vacuum pump; 14. cover; 15. transition joint; 16. hinge; 17. buckle; 18. first sealing block; 19. first box; 20. air pipe joint; 21. one-way valve; 22. vacuum gauge; 23. display screen; 24. second box; 25. bolt; 26. locking plate; 27. second sealing block; 28. filter plate. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] The embodiment of the present invention provides a technical solution: a vacuum smelting device for a medium frequency furnace, comprising a furnace body 1; Figure 1 As shown, a load-bearing plate 2 is fixedly mounted on the outer wall of the furnace body 1, an assembly plate 4 is fixedly mounted on the upper end of the load-bearing plate 2 through a support 3, and a flow dividing component 5 and a filtering component 6 are fixedly mounted on the upper end of the assembly plate 4;

[0031] The flow dividing assembly 5 is sealed, the flow dividing assembly 5 and the filter assembly 6 are connected through the first air pipe 7, the filter assembly 6 is connected with a bellows 8, the upper end of the furnace body 1 is sealed with a cover 14, and one end of the bellows 8 passes through the cover 14 and is connected with the furnace body 1;

[0032] The furnace body 1 is connected to the diverter assembly 5 via a bellows 8 , and the bellows 8 is easy to bend so that the cover 14 will not be blocked when it is opened.

[0033] A first vacuum pump 12 and a second vacuum pump 13 are fixedly mounted on the load-bearing plate 2, respectively. The first vacuum pump 12 and the second vacuum pump 13 are both located below the assembly plate 4, and the power of the first vacuum pump 12 is less than the power of the second vacuum pump 13;

[0034] By providing the first vacuum pump 12 and the second vacuum pump 13 with different powers, vacuum pumps with different powers can be selected during vacuuming.

[0035] The diverter component 5 is provided with two groups of air outlets, which are respectively connected to the second air pipe 10 and the third air pipe 11. The second air pipe 10 is connected to the second vacuum pump 13, and the third air pipe 11 is connected to the second vacuum pump 13. The display screen of the diverter component 5 can display the vacuum degree inside the diverter component 5.

[0036] The first vacuum pump 12 and the second vacuum pump 13 work so that the flow dividing assembly 5 and the furnace body 1 can be in a negative pressure state.

[0037] Specifically, Figure 2 As shown, a hinge 16 is fixedly installed on one side of the furnace body 1, one end of the hinge 16 is fixedly connected to one end of the cover 14, and the other end of the cover 14 is connected to the other side of the furnace body 1 through a buckle 17; the furnace body 1 is hinged to the cover 14 through the hinge 16, which can facilitate the opening of the cover 14, and the buckle 17 is used to ensure the stability of the cover 14 when it is closed.

[0038] A first sealing block 18 is fixedly mounted on the lower end of the cover 14. The first sealing block 18 is inserted into the furnace body 1, and the first sealing block 18 and the furnace body 1 are interference fit.

[0039] The interference fit between the first sealing block 18 and the furnace body 1 can ensure that the cover 14 and the furnace body 1 are sealed when closed.

[0040] A transition joint 15 is embedded on the cover 14, and the transition joint 15 passes through the cover 14 and the first sealing block 18 to be connected with the furnace body 1, and one end of the bellows 8 is connected with the transition joint 15; the bellows 8 is connected with the furnace body 1 through the transition joint 15, which can facilitate the disassembly and replacement of the bellows 8 and ensure the sealing performance at the same time.

[0041] like Figure 3 As shown, the flow dividing assembly 5 includes a first box body 19 and a display screen 23. The first box body 19 is fixedly mounted on the upper end of the assembly plate 4. The display screen 23 is fixedly mounted on the upper end of the first box body 19. The two groups of air outlets of the first box body 19 penetrate the assembly plate 4. The second air pipe 10 and the third air pipe 11 are respectively sealed and plugged into the two groups of air outlets, and one end of the second air pipe 10 and the third air pipe 11 are both located in the first box body 19. A trachea joint 20 is embedded on one side of the first box body 19, and one end of the first air pipe 7 is sealed and plugged into the trachea joint 20.

[0042] The first vacuum pump 12 and the second vacuum pump 13 work so that the first box body 19 and the furnace body 1 can be in a negative pressure state.

[0043] Furthermore, a vacuum gauge 22 is fixedly installed in the first box 19, and the vacuum gauge 22 is electrically connected to the display screen 23;

[0044] By installing the vacuum gauge 22 in the first box body 19, since the first box body 19 is connected to the furnace body 1 and can be in a negative pressure state, the vacuum gauge 22 can measure the negative pressure value in the furnace body 1, thereby avoiding the vacuum gauge 22 from working in the high temperature environment of the furnace body 1 for a long time, and greatly increasing the service life of the vacuum gauge 22.

[0045] Furthermore, one end of the second air pipe 10 and the third air pipe 11 are both installed with a one-way valve 21 , and the air path directions of the two sets of one-way valves 21 are from the inside of the first box body 19 to the outside of the first box body 19 .

[0046] The one-way valve 21 prevents the gas in the second gas pipe 10 or the third gas pipe 11 from flowing back into the first box 19 .

[0047] like Figure 4 As shown, the filter assembly 6 includes a second box body 24 and a filter plate 28. The second box body 24 is fixedly mounted on the upper end of the assembly plate 4. The first air pipe 7 and the bellows 8 are both connected to the second box body 24. The filter plate 28 is sealed and plugged into the second box body 24.

[0048] By providing the filter assembly 6, dust and debris in the bellows 8 can be filtered, thereby increasing the service life of the vacuum pump.

[0049] Specifically, a locking plate 26 is detachably mounted on the upper end of the second box body 24, a second sealing block 27 is fixedly mounted on the lower end of the locking plate 26, an insertion port is opened on the upper end of the second box body 24, the second sealing block 27 is located in the insertion port, and the second sealing block 27 and the insertion port are interference fit, and the filter plate 28 is fixedly mounted on the lower end of the second sealing block 27;

[0050] The second sealing block 27 is used to seal and insert the filter plate 28 into the second box body 24, thereby ensuring that no air leakage occurs during filtering.

[0051] Specifically, Figure 5 As shown, two groups of fixing holes are opened on the locking plate 26, and bolts 25 are arranged in the fixing holes. Two groups of threaded holes 9 are opened on the upper end of the second box body 24. The two groups of threaded holes 9 are arranged corresponding to the two groups of fixing holes, and one end of the bolt 25 is threadedly installed in the threaded hole 9.

[0052] Working principle: by providing a shunt component 5 connected with the furnace body 1, and connecting the shunt component 5 with the first vacuum pump 12 and the second vacuum pump 13, when evacuating the furnace body 1, the first vacuum pump 12 or the second vacuum pump 13 can be selected to be turned on according to the vacuum degree, or the first vacuum pump 12 and the second vacuum pump 13 can be turned on at the same time, thereby realizing vacuum extraction operations at different gears, achieving the purposes of high exhaust efficiency and low energy consumption, and having a simple structure and convenient use; by installing the vacuum gauge 22 in the shunt component 5, the vacuum gauge 22 is prevented from working in the high temperature environment of the furnace body 1 for a long time, so that the service life of the vacuum gauge 22 is greatly increased, and a locking plate 26 is fixed at the upper end of the second box body 24 by bolts 25, and a filter plate 28 is fixedly installed at the lower end of the locking plate 26, and the filter plate 28 is plugged into the second box body 24, which not only achieves the filtering effect, but also facilitates disassembly and cleaning, thereby improving work efficiency.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum smelting device for a medium frequency furnace, comprising a furnace body (1), characterized in that: A load-bearing plate (2) is fixedly mounted on the outer wall of the furnace body (1); an assembly plate (4) is fixedly mounted on the upper end of the load-bearing plate (2) via a support (3); and a flow distribution component (5) and a filter component (6) are fixedly mounted on the upper end of the assembly plate (4); The flow splitter assembly (5) is sealed, the flow splitter assembly (5) and the filter assembly (6) are connected via a first air pipe (7), a bellows (8) is connected to the filter assembly (6), the upper end of the furnace body (1) is sealedly connected to a sealing cover (14), and one end of the bellows (8) passes through the sealing cover (14) and is connected to the furnace body (1); A first vacuum pump (12) and a second vacuum pump (13) are respectively fixedly mounted on the load-bearing plate (2); the first vacuum pump (12) and the second vacuum pump (13) are both located below the assembly plate (4); and the power of the first vacuum pump (12) is less than the power of the second vacuum pump (13); The flow splitter assembly (5) is provided with two groups of air outlets, the two groups of air outlets of the flow splitter assembly (5) are respectively connected to a second air pipe (10) and a third air pipe (11), the second air pipe (10) is connected to a second vacuum pump (13), and the third air pipe (11) is connected to the second vacuum pump (13); The display screen of the flow dividing component (5) can display the vacuum degree in the flow dividing component (5); A hinge (16) is fixedly mounted on one side of the furnace body (1), one end of the hinge (16) is fixedly connected to one end of the cover (14), and the other end of the cover (14) is connected to the other side of the furnace body (1) via a buckle (17); A first sealing block (18) is fixedly mounted on the lower end of the sealing cover (14); the first sealing block (18) is inserted into the furnace body (1), and the first sealing block (18) and the furnace body (1) are interference fit; A transition joint (15) is embedded in the sealing cover (14), the transition joint (15) passes through the sealing cover (14) and the first sealing block (18) and is in communication with the furnace body (1), and one end of the bellows (8) is in communication with the transition joint (15); The flow distribution component (5) comprises a first box body (19) and a display screen (23); the first box body (19) is fixedly mounted on the upper end of the assembly plate (4); the display screen (23) is fixedly mounted on the upper end of the first box body (19); two groups of air outlets of the first box body (19) both penetrate the assembly plate (4); the second air pipe (10) and the third air pipe (11) are respectively sealed and plugged into the two groups of air outlets; and one end of the second air pipe (10) and the third air pipe (11) are both located in the first box body (19). A trachea joint (20) is embedded on one side of the first box (19), one end of the first trachea (7) is sealed and plugged into the trachea joint (20), a vacuum gauge (22) is fixedly installed in the first box (19), the vacuum gauge (22) is electrically connected to the display screen (23), and one end of the second trachea (10) and the third trachea (11) are both installed with a one-way valve (21), and the air path directions of the two sets of the one-way valves (21) are from the inside of the first box (19) to the outside of the first box (19).

2. A vacuum smelting device for a medium frequency furnace according to claim 1, characterized in that: The filter assembly (6) comprises a second box body (24) and a filter plate (28); the second box body (24) is fixedly mounted on the upper end of the assembly plate (4); the first air pipe (7) and the bellows (8) are both in communication with the second box body (24); and the filter plate (28) is sealed and plugged into the second box body (24).

3. A vacuum smelting device for a medium frequency furnace according to claim 2, characterized in that: A locking plate (26) is detachably mounted on the upper end of the second box body (24), a second sealing block (27) is fixedly mounted on the lower end of the locking plate (26), the filter plate (28) is fixedly mounted on the lower end of the second sealing block (27), an insertion port is provided on the upper end of the second box body (24), the second sealing block (27) is located in the insertion port, and the second sealing block (27) is interference fit with the insertion port.

4. A vacuum smelting device for a medium frequency furnace according to claim 3, characterized in that: The locking plate (26) is provided with two groups of fixing holes, in which bolts (25) are arranged. The upper end of the second box body (24) is provided with two groups of threaded holes (9), the two groups of threaded holes (9) are arranged corresponding to the two groups of fixing holes, and one end of the bolt (25) is threadedly installed in the threaded hole (9).

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