CN117329860B - Energy-saving rotary vacuum annealing furnace - Google Patents
Energy-saving rotary vacuum annealing furnace Download PDFInfo
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- CN117329860B CN117329860B CN202311276658.0A CN202311276658A CN117329860B CN 117329860 B CN117329860 B CN 117329860B CN 202311276658 A CN202311276658 A CN 202311276658A CN 117329860 B CN117329860 B CN 117329860B
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- 238000000137 annealing Methods 0.000 title claims abstract description 59
- 239000000843 powder Substances 0.000 claims abstract description 100
- 238000009826 distribution Methods 0.000 claims abstract description 68
- 238000004140 cleaning Methods 0.000 claims abstract description 32
- 238000004321 preservation Methods 0.000 claims abstract description 27
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims description 17
- 238000009423 ventilation Methods 0.000 claims description 14
- 239000006185 dispersion Substances 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 abstract description 34
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 34
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 27
- 238000007664 blowing Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 75
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 20
- 238000000034 method Methods 0.000 description 9
- 229910052757 nitrogen Inorganic materials 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 150000002431 hydrogen Chemical class 0.000 description 8
- 238000003756 stirring Methods 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- XEVZIAVUCQDJFL-UHFFFAOYSA-N [Cr].[Fe].[Si] Chemical compound [Cr].[Fe].[Si] XEVZIAVUCQDJFL-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- -1 oxygen ions Chemical class 0.000 description 3
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000009692 water atomization Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
- F27D7/02—Supplying steam, vapour, gases, or liquids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/18—Door frames; Doors, lids, removable covers
- F27D1/1808—Removable covers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/18—Door frames; Doors, lids, removable covers
- F27D1/1858—Doors
- F27D1/1866—Door-frames
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
- F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Details (AREA)
Abstract
The invention relates to the field of annealing furnaces, in particular to an energy-saving rotary vacuum annealing furnace which comprises a furnace liner, a cabin door and the like; a plurality of cabin doors are connected to the furnace liner; the furnace pipe and all the cabin doors form a hollow circular pipe. According to the invention, the air distribution pipe is arranged at a high position between the sealing cover and the ventilation center, the air holes are formed in the upper part of the air distribution pipe, so that the situation that air is directly blown to powder, the powder is lifted up to cause the blocking of the electromagnetic valve is effectively avoided, the caking powder on the inner wall of the circular pipe is blown down by blowing hydrogen to the inner surfaces of the furnace pipe and the circular pipe of the cabin door, the caking powder is scattered when falling down, the contact between the powder and the hydrogen is increased, two groups of air blowing holes are arranged, the cleaning efficiency of the caking powder on the inner wall of the circular pipe is effectively improved, and the heated air is thermally conducted through the heat preservation cavity on one side of the unheated furnace pipe when being discharged, and then the corresponding powder is preheated, so that the energy and the resource are saved, and the production cost of enterprises is reduced.
Description
Technical Field
The invention relates to the field of annealing furnaces, in particular to an energy-saving rotary vacuum annealing furnace.
Background
Enterprises prepare the iron-silicon-chromium raw powder by adopting a water atomization process, and the produced iron-silicon-chromium raw powder has higher oxygen content, so that the initial magnetic permeability is lower, the hardness and the processability of the raw powder are poorer, and the iron-silicon-chromium raw powder is required to be annealed.
In the prior art, annealing treatment is generally carried out by mixing and matching hydrogen and nitrogen gas through a boat pushing furnace and a steel belt furnace, but in the annealing process, the contact of hydrogen and powder is insufficient, the use effect after annealing is poor, the powder is turned over in a furnace tube in a rotary annealing mode, the powder is adhered to the inner wall of the furnace tube, and overheated when the furnace tube rotates, the powder is insufficient in contact with the hydrogen, oxygen ions in the powder cannot be replaced, and when gas is input, flying dust moves along with the circulating gas, the powder is taken out of the furnace tube, so that the yield of enterprises is reduced, the subsequent purification of the gas and the cleaning work of a filter assembly of the enterprises are increased, the production cost of the enterprises is increased, and when the powder is annealed, the gas flowing in the furnace tube is also heated, so that the gas is directly discharged, and the heat in the gas cannot be recovered, thereby causing the waste of energy and resources.
Disclosure of Invention
The technical problems of the invention are as follows:
in order to overcome the defects that powder adheres to the inner wall of a furnace tube, the powder is overheated and is insufficient in contact with hydrogen, flying dust moves along with circulating gas, the powder is taken out of the furnace tube, the gas is heated, and heat in the gas cannot be recycled, the invention provides an energy-saving rotary vacuum annealing furnace.
The technical implementation scheme adopted by the invention is as follows:
an energy-saving rotary vacuum annealing furnace comprises a base, a support, a sealing cover, a furnace liner, a cabin door, a numerical control center, a heater, a gas dispatching desk, an air supply pipe, an exhaust pipe, an electric guide rail and a rotating assembly; a plurality of supports are fixedly connected on the base; the upper parts of all the supports are fixedly connected with a sealing cover respectively; a furnace liner is connected between the two adjacent sealing covers in a common rotation way; a plurality of cabin doors are connected to the furnace liner; the furnace liner and all cabin doors form a hollow circular tube; a numerical control center is arranged on the base; a heater is arranged at the upper part of the numerical control center; the heater is connected with the furnace pipe and all the cabin doors in a sliding way to form the outer surface of the hollow circular pipe; the rear part of the base is provided with a gas dispatching desk; the gas dispatching desk is communicated with a plurality of gas supply pipes; the gas dispatching desk is communicated with a plurality of exhaust pipes; each side wall of each sealing cover is provided with a converging cavity; each exhaust pipe is communicated with one converging cavity; an electric guide rail is arranged on the base; the electric guide rail is in sliding connection with the numerical control center through an electric sliding block; the front support is connected with a rotating assembly; the rotating component is fixedly connected with the furnace pipe; the rotating component is used for jointly rotating the furnace liner and all the cabin doors to form a hollow circular tube and turning over powder; the air distribution pipe, the ventilation center and the electromagnetic valve are also included; all the sealing covers are fixedly connected with a hollow air distribution pipe with a plurality of air holes on the side wall; each gas distribution pipe is communicated with one gas supply pipe; a plurality of annealing cavities are arranged in the middle of the furnace liner; each gas distribution pipe is positioned in one annealing cavity; a ventilation center is fixedly connected between the two annealing cavities; the ventilation center is fixedly connected with all the air distribution pipes; the outer surface of the ventilation center is rotationally connected with the inner surface of the furnace; the ventilation center is provided with a plurality of electromagnetic valves, and a filter screen is arranged on each electromagnetic valve; an overflow cavity is arranged in the middle of the side wall of the furnace liner; the ventilation center is internally provided with a ventilation cavity; the ventilation cavity is communicated with the overflow cavity; a plurality of heat preservation cavities are arranged on the side walls of the furnace liner and the cabin door; each cabin door is also provided with a plurality of heat preservation cavities; the heat preservation cavity on the cabin door is communicated with the corresponding heat preservation cavity on the furnace liner; the converging cavity is communicated with the adjacent heat preservation cavity.
Preferably, the rotating assembly comprises a servo motor, a gear and a toothed ring; a servo motor is arranged on the support in front; the output shaft of the servo motor is fixedly connected with a gear; the front part of the furnace liner is fixedly connected with a toothed ring; the lower part of the toothed ring is meshed with the gear.
Preferably, the gas distribution pipe is located at the upper part between the ventilation center and the corresponding cover.
Preferably, the position of the air hole opened on the air distribution pipe is positioned at the upper part of the air distribution pipe.
Preferably, the gas distribution pipe is provided with two vent holes, and the opening directions of the two vent holes are inverted splayed.
Preferably, the electromagnetic valves are arranged at the upper part of the ventilation center, and the electromagnetic valves at the same side are arranged in a crescent shape.
Preferably, the wind-driven generator further comprises a supporting rod, a dispersing piece, a transmission rod, a fan blade, a convex block, a first poking piece and a windshield; the lower part of each gas distribution pipe is respectively communicated with a row of supporting rods, and the positions of the supporting rods, which are contacted with the gas distribution pipe, are provided with energy-absorbing and shock-absorbing gaskets; the lower part of each supporting rod is fixedly connected with a dispersing piece; the middle part of each supporting rod is respectively connected with a transmission rod in a rotating way; the upper part of each transmission rod is fixedly connected with a fan blade; each transmission rod is a hollow pipe, and a plurality of convex blocks are fixedly connected on the inner wall of each transmission rod; each transmission rod is fixedly connected with a plurality of first shifting sheets; the first poking piece has elasticity; each first poking piece is contacted with the adjacent convex blocks in sequence; a plurality of windshields are fixedly connected in each air distribution pipe, and each windshield is a circular sheet with a quarter area gap.
Preferably, the dispersion member is provided in an "X" shape, and the dispersion member has an alloy material having good heat conductive property.
Preferably, the notches of adjacent windshields face opposite sides for the gas to flow in an "S" shape within the gas distribution tube.
Preferably, the device also comprises a connecting rod, a hole cleaning piece, a baffle and a second poking piece; a plurality of two connecting rods which are distributed left and right are fixedly connected to one side of the lower part of each gas distribution pipe, which is close to the ventilation center; the connecting rod is an elastic rod; each connecting rod is fixedly connected with a hole cleaning piece; the hole cleaning piece is a cleaning brush; each hole cleaning piece is contacted with an adjacent electromagnetic valve; each hole cleaning piece is fixedly connected with a baffle plate; the inner wall of the furnace liner is fixedly connected with a plurality of second poking pieces which have elasticity; each second shifting piece is respectively contacted with two adjacent baffle pieces in sequence.
The invention has the beneficial effects that: 1. according to the invention, the air distribution pipe is arranged at a high position between the sealing cover and the ventilation center, and the air holes on the air distribution pipe are formed in the upper part of the air distribution pipe, so that the air holes of the air distribution pipe are effectively prevented from blowing out air, the air is directly blown to powder, the powder is lifted, and the powder moves to the position of the electromagnetic valve along with the reacted hydrogen, so that the electromagnetic valve is blocked, and the circulation of the hydrogen is influenced.
2. The air holes on the air distribution pipe are formed in a splayed shape, so that hydrogen blown out in the air distribution pipe is blown to the inner surfaces of the furnace liner and the cabin door circular pipe, then the hydrogen flows downwards along the inner surfaces of the circular pipe, the caking powder is blown down on the inner wall of the circular pipe, and is dropped and scattered when falling, the contact with the hydrogen is increased, two groups of air blowing holes are formed, and the cleaning efficiency of the caking powder on the inner wall of the circular pipe is effectively improved.
3. Through the heat preservation intracavity of the gas that has heated when discharging, through unheated courage one side, the heat preservation intracavity is spread over the pipe inner wall that courage and hatch door are constituteed, and hydrogen or nitrogen gas also carries out heat conduction to unheated courage part when the intracavity flows that keeps warm, then preheats corresponding powder, effectively reduces the intensification time to the powder, energy saving and resource, reduction enterprise manufacturing cost.
4. Through setting up the dispersing piece into "X" shape, effectively increase dispersing piece and the area of contact of powder for vibration energy on the dispersing piece fully conducts more powder, fully shakes the powder and dispels.
5. The second plectrum is along with the furnace pipe rotation, drives in step, and the brush hair of clear hole spare is scrubbed the filter screen on the solenoid valve, and later when clear hole spare resets, and clear hole spare also scrub the filter screen on the solenoid valve again, throws away the powder that remains in clear hole spare simultaneously, realizes the self-cleaning to the filter screen on clear hole spare and the solenoid valve, guarantees the circulation of gas.
Drawings
FIG. 1 is a schematic view showing a first perspective structure of an energy-saving rotary vacuum annealing furnace according to the present invention;
FIG. 2 is a schematic view showing a second perspective structure of the energy-saving rotary vacuum annealing furnace of the present invention;
FIG. 3 is a schematic view of the front half part of the furnace pipe of the energy-saving rotary vacuum annealing furnace;
FIG. 4 is a schematic diagram showing the cooperation of a heater and a furnace pipe of the energy-saving rotary vacuum annealing furnace;
FIG. 5 is a schematic view showing the internal structure of a ventilating center of the energy-saving rotary vacuum annealing furnace;
FIG. 6 is a schematic view of the front half part of the furnace pipe of the energy-saving rotary vacuum annealing furnace;
FIG. 7 is a schematic view showing the internal structure of a cover of the energy-saving rotary vacuum annealing furnace;
FIG. 8 is a schematic view of the flow of gas in the ventilation center of the energy-efficient rotary vacuum annealing furnace of the present invention;
FIG. 9 is an explanatory view showing the installation position of a strut of the energy-saving rotary vacuum annealing furnace of the present invention;
FIG. 10 is a schematic view of the structure of a dispersing member of the energy-saving rotary vacuum annealing furnace of the present invention;
FIG. 11 is an enlarged schematic view of FIG. 10A in accordance with the present invention;
FIG. 12 is a schematic view of gas flow in a gas distribution pipe of the energy-saving rotary vacuum annealing furnace according to the invention;
FIG. 13 is a view showing the installation position of a hole cleaning member of an energy-saving rotary vacuum annealing furnace according to the present invention.
Reference numerals illustrate: the device comprises a base, a 2-support, a 3-sealing cover, a 4-furnace, a 5-cabin door, a 6-numerical control center, a 7-heater, an 8-gas dispatching desk, a 9-gas supply pipe, a 10-exhaust pipe, an 11-electric guide rail, a 12-servo motor, a 13-gear, a 14-toothed ring, a 15-gas distribution pipe, a 16-gas exchange center, a 17-electromagnetic valve, a 3001-converging cavity, a 4001-annealing cavity, a 4002-overflow cavity, a 4003-heat preservation cavity, a 1601-gas exchange cavity, a 101-support rod, a 102-dispersing piece, a 103-transmission rod, a 104-fan blade, a 105-convex block, a 106-first plectrum, a 107-windshield, a 201-connecting rod, a 202-hole cleaning piece, a 203-baffle and a 204-second plectrum.
Detailed Description
The invention is further described below with reference to the drawings and the detailed description.
Example 1
An energy-saving rotary vacuum annealing furnace, according to the illustration of figures 1-8, comprises a base 1, a support 2, a sealing cover 3, a furnace liner 4, a cabin door 5, a numerical control center 6, a heater 7, a gas dispatching desk 8, an air supply pipe 9, an exhaust pipe 10, an electric guide rail 11 and a rotating assembly; two supports 2 which are distributed front and back are connected on the base 1 through bolts; the upper parts of all the supports 2 are respectively welded with a sealing cover 3; a furnace 4 is connected between two adjacent sealing covers 3 in a common rotation way; two cabin doors 5 which are distributed front and back are detachably connected to the furnace liner 4; the furnace liner 4 and all the cabin doors 5 form a hollow circular tube; a numerical control center 6 is arranged on the base 1; a heater 7 is arranged at the upper part of the numerical control center 6; the heater 7 is connected with the furnace pipe 4 and all the cabin doors 5 in a sliding way to form the outer surface of a hollow circular pipe; the rear part of the base 1 is provided with a gas dispatching desk 8; the gas dispatching desk 8 is communicated with two gas supply pipes 9 which are distributed back and forth; the gas dispatching desk 8 is communicated with two exhaust pipes 10 which are distributed back and forth; each side wall of each sealing cover 3 is provided with a confluence cavity 3001; each exhaust pipe 10 communicates with one confluence chamber 3001; an electric guide rail 11 is arranged on the base 1; the electric guide rail 11 is in sliding connection with the numerical control center 6 through an electric sliding block; a rotating component is connected to the front support 2; the rotating component is fixedly connected with the furnace pipe 4; the rotating component is used for jointly rotating the furnace liner 4 and all the cabin doors 5 to form a hollow circular tube and turning over powder;
the air distribution pipe 15, the ventilation center 16 and the electromagnetic valve 17 are also included; all the sealing covers 3 are welded with a gas distribution pipe 15 respectively; each gas distribution pipe 15 is communicated with one gas supply pipe 9; two annealing cavities 4001 which are distributed front and back are arranged in the middle of the furnace pipe 4; each cloth tube 15 is positioned in one annealing cavity 4001; a ventilation center 16 is welded between the two annealing cavities 4001; the ventilation center 16 is welded with all the air distribution pipes 15; the outer surface of the ventilation center 16 is rotationally connected with the inner surface of the furnace 4; the ventilation center 16 is provided with two groups of electromagnetic valves 17 which are distributed back and forth, at least ten electromagnetic valves 17 in each group, and a filter screen is arranged on each electromagnetic valve 17; an overflow cavity 4002 is arranged in the middle of the side wall of the furnace pipe 4; a ventilation cavity 1601 is formed in the ventilation center 16; the ventilation chamber 1601 communicates with the overflow chamber 4002; two circles of heat preservation cavities 4003 are arranged on the side walls of the furnace liner 4 and the cabin door 5 and are distributed back and forth; each cabin door 5 is also provided with a plurality of heat preservation cavities 4003; the heat preservation cavity 4003 on the cabin door 5 is communicated with the corresponding heat preservation cavity 4003 on the furnace pipe 4; the confluence chamber 3001 communicates with the adjacent heat preservation chamber 4003.
The rotating assembly comprises a servo motor 12, a gear 13 and a toothed ring 14; a servo motor 12 is arranged on the front support 2; the output shaft of the servo motor 12 is fixedly connected with a gear 13; the front part of the furnace 4 is welded with a toothed ring 14; the lower part of the toothed ring 14 is meshed with the gear 13.
The air distribution pipe 15 is positioned at the upper part between the ventilation center 16 and the corresponding cover 3.
The position of the air hole on the air distribution pipe 15 is positioned at the upper part of the air distribution pipe 15.
The air distribution pipe 15 is provided with two exhaust holes, and the opening directions of the two exhaust holes are inverted eight-shaped.
The electromagnetic valves 17 are installed at the upper part of the ventilation center 16, and the electromagnetic valves 17 at the same side are arranged in a crescent shape.
Before the annealing furnace is used, firstly, the front cabin door 5 is opened, powder is paved in the corresponding annealing cavity 4001, the powder is loosely paved, then the cabin door 5 is closed, the cabin door 5 and the furnace pipe 4 are fixed together by screws, the powder remained on the outer surface of the furnace pipe 4 and the outer surface of the cabin door 5 is swept away, then the numerical control center 6 is controlled to move forward on the electric guide rail 11 through the electric sliding block, the rear cabin door 5 is completely exposed, the powder filling process is repeated, at the moment, the powder is filled in the furnace pipe 4, in order to avoid oxidation of the powder in the annealing process, the gas dispatching desk 8 is started, the gas dispatching desk 8 pumps out the air in the corresponding annealing cavity 4001 through the two exhaust pipes 10, as shown in figure 7, the exhaust pipes 10 pump out the air in the corresponding confluence cavity 3001 at first, the confluence cavity 3001 is negative pressure, then the air in the ventilation cavity 1601 is pumped out through each heat preservation cavity 4003, as shown in fig. 5, the ventilation cavity 1601 is further opened through the electromagnetic valve 17 on the air preservation cavity 1601, at this time, the ventilation cavity 1601 is communicated with the annealing cavity 4001, the air in the corresponding annealing cavity 4001 is pumped out by the ventilation cavity 1601, thereby realizing the vacuum pumping in the annealing cavity 4001, the air in the annealing cavity 4001 is exhausted as much as possible, the vacuum degree reaches-0.1 MPa, at this time, the air dispatching desk 8 is further used for conveying nitrogen into the air distribution pipe 15 through the air supply pipe 9, the residual air in the annealing cavity 4001 is discharged, at this time, after the pressure in the annealing cavity 4001 reaches +0.005- +0.01MPa, the program control of the heater 7 can be started through the numerical control center 6, the heater 7 starts to electrify and heat, the heater 7 heats the furnace bladder 4 contacted with the heater, at the same time, the servo motor 12 is started, the output shaft of the servo motor 12 rotates, and the gear 13 is synchronously driven to rotate the toothed ring 14, the toothed ring 14 drives the furnace 4 and the cabin door 5 to rotate between the two covers 3, and powder in the furnace 4 is stir-fried, so that the powder is heated uniformly.
Then after the numerical control center 6 monitors that the temperature in the furnace 4 is increased to 300 ℃, the gas dispatching desk 8 stops inputting nitrogen, at the moment, the gas dispatching desk 8 is connected with hydrogen, the hydrogen is pinched and conveyed to the annealing cavity 4001 through the air pipe 9, the pressure in the annealing cavity 4001 is kept between +0.005 and +0.01MPa, then the heater 7 continuously heats the furnace 4 until the highest temperature of the annealing set by the numerical control center 6 is reached, the temperature is kept for a set time, the rotation of the furnace 4 is always kept during the heat preservation, wherein the hydrogen is conveyed to the annealing cavity 4001 through the air pipe 9 and the air distribution pipe 15, the hydrogen is in contact with powder for reaction, oxygen ions in the powder are replaced, the hydrogen enters the ventilation cavity 1601 after passing through the electromagnetic valve 17, then sequentially passes through the overflow cavity 4002, the heat preservation cavity 4003, the confluence cavity 3001 and the exhaust pipe 10, in order to avoid the contact between the air distribution pipe 15 and the powder in the annealing cavity 4001, the powder is attached to the outer surface of the gas distribution pipe 15, the powder is not fully contacted with hydrogen, oxygen ions in the powder cannot be fully replaced, as shown in fig. 6, the gas distribution pipe 15 is arranged at a high position between the sealing cover 3 and the ventilation center 16, gas holes on the gas distribution pipe 15 are opened at the upper part of the gas distribution pipe 15, the gas holes of the gas distribution pipe 15 are effectively prevented from blowing out gas and directly blowing to the powder, the powder is raised, the powder moves to the position of the electromagnetic valve 17 along with the reacted hydrogen to cause the blocking of the electromagnetic valve 17, the circulation of the hydrogen is influenced, the gas holes on the gas distribution pipe 15 are opened in a splayed shape, the hydrogen blown out from the gas distribution pipe 15 is blown to the inner surfaces of the furnace liner 4 and the cabin door 5 circular pipe, then the hydrogen flows downwards along the inner surface of the circular pipe, the powder is stir-fried in the circular pipe in the rotating process of the circular pipe, and the position that powder contacted with the pipe has powder caking adhesion, even when the pipe rotates, drive the caking powder of adhesion and rotate to the upper portion that is close to the pipe together, caking powder still drops from the pipe inner wall, caking powder can't fully contact the reaction with hydrogen, and the hydrogen of upwards blowing through gas distribution pipe 15, when hydrogen flows along the pipe inner wall, can blow down on the pipe inner wall, and make the caking powder drop, and be broken when dropping, increase the contact with hydrogen, set up two sets of gas holes, effectively improve the cleaning efficiency of the caking powder of pipe inner wall.
When nitrogen or hydrogen is introduced into the furnace 4, the nitrogen or hydrogen is heated, and enters the ventilation cavity 1601 through the electromagnetic valve 17, as shown in fig. 8, the heated hydrogen or nitrogen in the ventilation cavity 1601 is enabled to pass through the overflow cavity 4002 and the heat preservation cavity 4003 on one side of the unheated furnace 4 by connecting the exhaust pipe 10 on one side of the unheated furnace 4, the heat preservation cavity 4003 is distributed over the inner wall of a circular tube formed by the furnace 4 and the cabin door 5, and when the hydrogen or the nitrogen flows in the heat preservation cavity 4003, heat conduction is also carried out on the unheated furnace 4, and then preheating is carried out on corresponding powder, so that the heating time of the powder is effectively shortened, energy and resources are saved, and the production cost of enterprises is reduced.
After the heat preservation of the powder at the front part of the furnace 4 is finished, the numerical control center 6 is moved to the rear part of the furnace 4, the operation process is repeated, the powder at the rear part is stir-fried and annealed, the powder at the front part begins to be cooled by a program, the cooling rate of the powder is controlled, the time of hot air flow passing through the ventilation cavity 1601 at the front part can be controlled, the hydrogen gas which is firstly introduced into the heating part is switched into nitrogen when the temperature of the furnace 4 is at a certain specific temperature, the gas is stopped to be introduced into the furnace after the temperature is at 40 ℃, meanwhile, the rotation of the furnace 4 can be stopped after the powder at the rear part of the furnace 4 is also stir-fried, the discharging is waited, a collecting box is only needed to be placed at the lower part of the furnace 4, then the cabin door 5 is opened, the furnace 4 is gently taken down, the powder in the furnace 4 is controlled to rotate again, the operation is repeated, and the powder at the rear part of the furnace 4 can be taken out.
Example 2
On the basis of the 1 st embodiment, according to fig. 1 and 9-12, the wind screen further comprises a supporting rod 101, a dispersing piece 102, a transmission rod 103, a fan blade 104, a protruding block 105, a first poking piece 106 and a wind screen 107; the lower part of each gas distribution pipe 15 is respectively communicated with a row of supporting rods 101, and the positions of the supporting rods 101 contacted with the gas distribution pipes 15 are provided with energy-absorbing and shock-absorbing gaskets; a dispersing piece 102 is welded at the lower part of each supporting rod 101; a transmission rod 103 is rotatably connected to the middle part of each supporting rod 101; the upper part of each transmission rod 103 is welded with a fan blade 104; each transmission rod 103 is a hollow tube, and at least four circles of lugs 105 are welded on the inner wall of the hollow tube and distributed up and down; four first shifting sheets 106 which are distributed up and down are respectively welded on each transmission rod 103; the first pulling piece 106 has elasticity; each first pulling piece 106 is sequentially contacted with the adjacent convex blocks 105; a plurality of windshields 107 are welded in each air distribution pipe 15, and the windshields 107 are round plates with a quarter-area notch.
The dispersion member 102 is provided in an "X" shape, and the dispersion member 102 has an alloy material having good heat conductive property.
The notches of adjacent windshields 107 are facing opposite sides for the gas to flow in an "S" shape within the gas distribution tube 15.
As shown in fig. 1 and 13, the device further comprises a connecting rod 201, a hole cleaning piece 202, a baffle 203 and a second poking piece 204; a plurality of two connecting rods 201 which are distributed left and right are welded on one side of the lower part of each gas distribution pipe 15, which is close to the ventilation center 16; the connecting rod 201 is an elastic rod; each connecting rod 201 is welded with a hole cleaning piece 202; the hole cleaning piece 202 is a cleaning brush; the bristles of each hole cleaning piece 202 are respectively contacted with the adjacent electromagnetic valves 17; each hole cleaning piece 202 is welded with a baffle 203; the inner wall of the furnace 4 is welded with two second poking sheets 204 which are distributed front and back, and the second poking sheets 204 have elasticity; each second pulling piece 204 is in contact with two adjacent blocking pieces 203 in turn.
When the powder is stir-fried, the powder is rotated by the circular tube to enable the position of the powder contacted with the circular tube to rise, then the powder is separated from the inner wall of the circular tube under the action of gravity and falls on the powder in the middle part to realize the stirring of the powder, and if the powder is mutually adhered and agglomerated or extruded at the moment, the powder forms a block shape, the block-shaped powder is not scattered in the stir-frying process of the powder, the contact of the powder and hydrogen is insufficient, as shown in figure 9, a plurality of supporting rods 101 and dispersing pieces 102 are additionally arranged below the gas distribution tube 15, and the dispersing pieces 102 are arranged at the position of a shallow layer of the powder, when hydrogen or nitrogen is introduced into the gas distribution tube 15, as shown in figure 12, a plurality of notched circular windshields 107 are arranged in the gas distribution tube 15 to limit the flow directions of the hydrogen and the nitrogen, by enabling the gas to flow along the S shape, increasing the travel of the gas in the gas distribution pipe 15, enabling the gas to be evenly sprayed out of each gas hole, evenly blowing the gas into the furnace 4, arranging the fan blades 104 near the notch of the windshield 107, effectively driving the fan blades 104 to rotate after the gas flow passes through the notch of the windshield 107, driving the corresponding first poking pieces 106 to rotate by the fan blades 104 through the transmission rod 103, enabling the first poking pieces 106 to contact with the adjacent convex pieces 105 in sequence in the rotating process, enabling the convex pieces 105 to conduct vibration to the supporting rods 101, enabling the vibration to be conducted to the adjacent convex pieces 105 through the first poking pieces 106 at a plurality of different positions, enabling the supporting rods 101 to vibrate at a certain frequency integrally, enabling the supporting rods 101 to conduct the vibration to powder in the circular tubes through the dispersing pieces 102, enabling the dispersing pieces 102 to be arranged into an X shape, effectively increase the area of contact of dispersing member 102 and powder for vibration energy on dispersing member 102 fully conducts to more powder, fully shakes the powder and looses, because the powder rotates along with the pipe, has realized shaking the bulk powder, increases the contact reaction of powder and hydrogen, and the powder is turned along with the pipe rotates, the powder of bottom is stir-fry along with turning over, transfer to the powder surface, and dispersing member 102 is located the shallow of powder, will shake the bulk that shifts to the powder top layer through stir-fry and scatter, effectively avoid the powder to be shaken out the condition emergence of reality.
Even if the air does not blow the powder up in a large amount, part of the powder flies up in the powder stir-frying process, then the flying powder reaches the electromagnetic valve 17 along with the air, the powder is intercepted by a filter screen on the electromagnetic valve 17, as shown in fig. 13, at the moment, the second stirring piece 204 rotates along with the furnace 4, when the second stirring piece 204 contacts with the baffle 203, the second stirring piece 204 drives the baffle 203 to move, the connecting rod 201 is bent and deformed, the baffle 203 synchronously drives the hole cleaning piece 202 to move along the crescent-shaped electromagnetic valve 17, the bristles of the hole cleaning piece 202 brush the filter screen on the electromagnetic valve 17, the mesh of the filter screen on the electromagnetic valve 17 is cleaned, after the hole cleaning piece 202 contacts with the air distribution pipe 15, the powder remained on the hole cleaning piece 202 is scattered by vibration when the contact with the air distribution pipe 15, the second stirring piece 204 passes over the baffle 203 through deformation, the connecting rod 201 is recovered, simultaneously drives the hole cleaning piece 202 to reset, simultaneously the filter screen on the electromagnetic valve 17 is cleaned again, the remained on the hole cleaning piece 202 is thrown off, the self cleaning piece 202 and the filter screen 17 is cleaned, and then the electromagnetic valve is repeatedly cleaned, and the corresponding process is continued until the hole cleaning piece is cleaned, and the electromagnetic valve is cleaned, and the second filter screen is continuously contacted with the electromagnetic valve 17.
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
Claims (9)
1. An energy-saving rotary vacuum annealing furnace comprises a base (1); a plurality of supports (2) are fixedly connected on the base (1); the upper parts of all the supports (2) are fixedly connected with a sealing cover (3) respectively; a furnace liner (4) is connected between two adjacent sealing covers (3) in a rotating way; a plurality of cabin doors (5) are connected to the furnace liner (4); the furnace liner (4) and all the cabin doors (5) form a hollow circular tube; a numerical control center (6) is arranged on the base (1); a heater (7) is arranged at the upper part of the numerical control center (6); the heater (7) is in sliding connection with the outer surface of the hollow circular tube formed by the furnace liner (4) and all the cabin doors (5); the rear part of the base (1) is provided with a gas dispatching desk (8); the gas dispatching desk (8) is communicated with a plurality of gas supply pipes (9); the gas dispatching desk (8) is communicated with a plurality of exhaust pipes (10); the side wall of each sealing cover (3) is provided with a converging cavity (3001); each exhaust pipe (10) is communicated with one converging cavity (3001); an electric guide rail (11) is arranged on the base (1); the electric guide rail (11) is in sliding connection with the numerical control center (6) through an electric sliding block; a rotating component is connected to the front support (2); the rotating component is fixedly connected with the furnace pipe (4); the rotating component is used for jointly rotating the furnace liner (4) and all the cabin doors (5) to form a hollow circular tube and turning over powder; it is characterized by also comprising a gas distribution pipe (15); all the sealing covers (3) are fixedly connected with a hollow air distribution pipe (15) with a plurality of air holes on the side wall; each gas distribution pipe (15) is communicated with one gas supply pipe (9); a plurality of annealing cavities (4001) are arranged in the middle of the furnace liner (4); each gas distribution pipe (15) is positioned in one annealing cavity (4001); a ventilation center (16) is fixedly connected between the two annealing cavities (4001); the ventilation center (16) is fixedly connected with all the air distribution pipes (15); the outer surface of the ventilation center (16) is rotationally connected with the inner surface of the furnace pipe (4); the ventilation center (16) is provided with a plurality of electromagnetic valves (17), and a filter screen is arranged on the electromagnetic valves (17); an overflow cavity (4002) is arranged in the middle of the side wall of the furnace liner (4); a ventilation cavity (1601) is arranged in the ventilation center (16); the ventilation cavity (1601) is communicated with the overflow cavity (4002); a plurality of heat preservation cavities (4003) are arranged on the side walls of the furnace liner (4) and the cabin door (5); each cabin door (5) is also provided with a plurality of heat preservation cavities (4003); the heat preservation cavity (4003) on the cabin door (5) is communicated with the corresponding heat preservation cavity (4003) on the furnace liner (4); the converging cavity (3001) is communicated with the adjacent heat preservation cavity (4003);
the utility model also comprises a supporting rod (101); the lower part of each gas distribution pipe (15) is respectively communicated with a row of supporting rods (101), and the positions of the supporting rods (101) contacted with the gas distribution pipes (15) are provided with energy-absorbing and shock-absorbing gaskets; the lower part of each supporting rod (101) is fixedly connected with a dispersing piece (102); the middle part of each supporting rod (101) is respectively and rotatably connected with a transmission rod (103); the upper part of each transmission rod (103) is fixedly connected with a fan blade (104); each transmission rod (103) is a hollow pipe, and a plurality of convex blocks (105) are fixedly connected on the inner wall of the transmission rod; a plurality of first poking sheets (106) are fixedly connected to each transmission rod (103); the first poking piece (106) has elasticity; each first poking piece (106) is sequentially contacted with the adjacent convex blocks (105); a plurality of windshields (107) are fixedly connected in each air distribution pipe (15), and each windshield (107) is a circular sheet with a quarter area gap.
2. An energy efficient rotary vacuum annealing furnace according to claim 1, characterized in that the rotating assembly comprises a servomotor (12); a servo motor (12) is arranged on the front support (2); the output shaft of the servo motor (12) is fixedly connected with a gear (13); the front part of the furnace liner (4) is fixedly connected with a toothed ring (14); the lower part of the toothed ring (14) is meshed with the gear (13).
3. An energy-efficient rotary vacuum annealing furnace according to claim 1, characterized in that the gas distribution tube (15) is located in the upper part between the ventilation center (16) and the corresponding cover (3).
4. An energy-saving rotary vacuum annealing furnace according to claim 1, wherein the air hole on the air distribution pipe (15) is located at the upper part of the air distribution pipe (15).
5. An energy-saving rotary vacuum annealing furnace according to claim 1, wherein the gas distribution pipe (15) is provided with two vent holes, and the opening directions of the two vent holes are inverted eight-shaped.
6. An energy-saving rotary vacuum annealing furnace according to claim 5, wherein electromagnetic valves (17) are installed at the upper part of the ventilating center (16), and electromagnetic valves (17) at the same side are arranged in a crescent shape.
7. An energy-efficient rotary vacuum annealing furnace according to claim 1, wherein the dispersion member (102) is provided in an "X" shape, and the dispersion member (102) has an alloy material with good heat conductive property.
8. An energy efficient rotary vacuum annealing furnace according to claim 1, characterized in that the notches of adjacent windshields (107) are facing opposite sides for the gas to flow in an "S" shape in the gas distribution tube (15).
9. An energy-efficient rotary vacuum annealing furnace according to claim 8, characterized by further comprising a connecting rod (201); two connecting rods (201) are fixedly connected to one side, close to the ventilation center (16), of the lower part of each air distribution pipe (15), and the two connecting rods (201) are distributed left and right; the connecting rod (201) is an elastic rod; each connecting rod (201) is fixedly connected with a hole cleaning piece (202); the hole cleaning piece (202) is a cleaning brush; each hole cleaning piece (202) is contacted with an adjacent electromagnetic valve (17); each hole cleaning piece (202) is fixedly connected with a baffle (203); a plurality of second poking sheets (204) are fixedly connected on the inner wall of the furnace pipe (4), and the second poking sheets (204) have elasticity; each second poking piece (204) is sequentially contacted with two adjacent baffle pieces (203).
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| CN202311276658.0A CN117329860B (en) | 2023-10-05 | 2023-10-05 | Energy-saving rotary vacuum annealing furnace |
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| CN202311276658.0A CN117329860B (en) | 2023-10-05 | 2023-10-05 | Energy-saving rotary vacuum annealing furnace |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108204737A (en) * | 2018-01-04 | 2018-06-26 | 湖南新天力科技有限公司 | A kind of horizontal reducing atmosphere vacuum annealing furnace |
| CN209957851U (en) * | 2019-04-24 | 2020-01-17 | 浙江海亮股份有限公司 | Annealing furnace and annealing equipment |
| CN210481441U (en) * | 2019-09-10 | 2020-05-08 | 辉县市东升机械有限公司 | Waste heat utilization type annealing furnace |
| CN115679066A (en) * | 2022-09-06 | 2023-02-03 | 恒源工业炉(靖江)有限公司 | Atmosphere replacement system of continuous annealing furnace |
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- 2023-10-05 CN CN202311276658.0A patent/CN117329860B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108204737A (en) * | 2018-01-04 | 2018-06-26 | 湖南新天力科技有限公司 | A kind of horizontal reducing atmosphere vacuum annealing furnace |
| CN209957851U (en) * | 2019-04-24 | 2020-01-17 | 浙江海亮股份有限公司 | Annealing furnace and annealing equipment |
| CN210481441U (en) * | 2019-09-10 | 2020-05-08 | 辉县市东升机械有限公司 | Waste heat utilization type annealing furnace |
| CN115679066A (en) * | 2022-09-06 | 2023-02-03 | 恒源工业炉(靖江)有限公司 | Atmosphere replacement system of continuous annealing furnace |
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| CN117329860A (en) | 2024-01-02 |
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