CN114085963A - Nitrogen-based atmosphere recycling device and method in gas quenching process - Google Patents
Nitrogen-based atmosphere recycling device and method in gas quenching process Download PDFInfo
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- CN114085963A CN114085963A CN202111417662.5A CN202111417662A CN114085963A CN 114085963 A CN114085963 A CN 114085963A CN 202111417662 A CN202111417662 A CN 202111417662A CN 114085963 A CN114085963 A CN 114085963A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/767—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material with forced gas circulation; Reheating thereof
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
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Abstract
The invention relates to the technical field of nitrogen circulating devices, in particular to a nitrogen-based atmosphere recycling device in a gas quenching process, which comprises a high-temperature furnace, wherein a control box is arranged on one side of the high-temperature furnace, a sealing mechanism is arranged on the high-temperature furnace, and a nitrogen mechanism, a gas supply mechanism and a gas medium mechanism are connected between the control box and the high-temperature furnace; the sealing mechanism is arranged, so that the high-temperature furnace door is convenient to drive and self-lock, the gas tightness of the high-temperature furnace is improved while the high-temperature furnace door is convenient to open, and gas leakage is avoided; through the arrangement of the nitrogen mechanism, the gas supply mechanism and the gas medium mechanism, the density characteristics among gases can be conveniently utilized to recover the corresponding gases, the use cost of the gases for heat treatment is reduced, and resources are saved.
Description
Technical Field
The invention relates to the technical field of nitrogen circulating devices, in particular to a device and a method for recycling nitrogen-based atmosphere in a gas quenching process.
Background
Most of the existing gas quenching technologies use inert gas as a cooling medium, and low-temperature inert gas flows over the surface of a workpiece to carry out convection heat transfer, so that the workpiece is cooled. Compared with water quenching and oil quenching, the gas quenching has the advantages of uniform cooling and small deformation of the workpiece and the defect of insufficient cooling capacity. The liquid or nitrogen has large heat exchange coefficient, can make up the problem of insufficient quenching cooling capacity of inert gas, has relatively low price, and is an ideal and economic quenching coolant.
However, when the existing heat treatment uses nitrogen, a disposable utilization mode is mostly adopted, the nitrogen is difficult to purify, the economic value is high, and the non-repeated utilization mode not only causes waste, but also increases the cost of the heat treatment.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a device and a method for recycling nitrogen-based atmosphere in a gas quenching process.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a nitrogen base atmosphere cyclic utilization device in gaseous quenching process, includes the high temperature furnace, one side of high temperature furnace is equipped with the control box, install sealing mechanism on the high temperature furnace, be connected with nitrogen gas mechanism, air feed mechanism and betweeen gas mechanism between control box and the high temperature furnace.
Specifically, sealing mechanism includes sealing door, the one end of high temperature furnace is rotated and is connected with sealing door, sliding connection has the kelly on the high temperature furnace, it has the spring to contradict on the kelly, the contact cover has been cup jointed on the kelly.
Specifically, one side of kelly is equipped with the feeler lever, fixedly connected with pivot on the feeler lever, the pivot is rotated and is connected the high temperature furnace, the winding has the torsional spring in the pivot, the one end block of torsional spring is on the inner wall of pivot and other end block at the high temperature furnace.
Specifically, the pot head of feeler lever is on the kelly, the conflict pole is close to the inside of kelly is equipped with the contact piece, the sealing door is contradicted on the feeler lever, the one end of kelly extends to the outside of high temperature furnace, the block has the gag lever post on the kelly, the gag lever post rotates and connects the sealing door.
Specifically, nitrogen gas mechanism includes first gas bomb, the inside of control box is equipped with first gas bomb, the winding has first fixed band on the first gas bomb, the both ends fixed connection control box of first fixed band, be connected with first trachea on the first gas bomb.
Specifically, first trachea runs through the control box and extends to the inside of high temperature furnace, the internally mounted of control box has first air pump, first solenoid valve and first filter, first air pump, first solenoid valve and first filter are installed respectively on first trachea.
Specifically, air feed mechanism includes the second trachea, the inside of control box is equipped with the second trachea, the tracheal one end of second extends to the inside of high temperature furnace, the control box side wall mounting has the filter mantle.
Specifically, the other end of the second air pipe extends into the filter cover, a second electromagnetic valve and a second air pump are arranged inside the control box, and the second electromagnetic valve and the second air pump are installed on the second air pipe.
Specifically, the mechanism of mediating gas includes the third trachea, the internally mounted of control box has the third trachea, the tracheal one end of third extends to the inside of high temperature furnace, one side fixedly connected with second fixed band of control box, the winding has the second gas bomb on the second fixed band.
Specifically, the other end of the third air pipe is connected with the second air storage bottle, a third air pump, a third electromagnetic valve and a second filter are arranged inside the control box, and the third air pump, the third electromagnetic valve and the second filter are respectively installed on the third air pipe.
The method of the nitrogen-based atmosphere recycling device in the gas quenching process comprises the following steps:
s1: when the high-temperature furnace is used for heat treatment, workpieces are transported into the high-temperature furnace one by one to be heated, the high-temperature furnace is enabled to obtain a good sealing effect through the sealing mechanism, and gas leakage is avoided;
s2: then after heating, starting the nitrogen mechanism to convey nitrogen into the high-temperature furnace, and rapidly cooling the high-temperature workpiece through the high heat exchange coefficient characteristic of the nitrogen, so that the workpiece has excellent mechanical properties, residual stress is eliminated, and the metal cutting processability is improved;
s3: and finally, in order to recycle high-value nitrogen, the gas-mediating mechanism is opened to release carbon dioxide, the nitrogen is recycled through the nitrogen mechanism by utilizing the characteristic that the density of the carbon dioxide is greater than that of the nitrogen, and in order to recycle carbon dioxide with economic value, the gas supply mechanism is opened, air is pumped into the high-temperature furnace to press concentrated carbon dioxide gas, so that the carbon dioxide is recycled into the gas-mediating mechanism again, the density characteristics of the gas are further conveniently utilized to be recycled one by one, the cost of heat treatment is reduced, and resources are saved.
The invention has the beneficial effects that:
(1) according to the device and the method for recycling the nitrogen-based atmosphere in the gas quenching process, the sealing mechanism is arranged on the high-temperature furnace, the sealing mechanism is arranged, so that the high-temperature furnace door is conveniently driven to be self-locked, the opening is convenient, the gas tightness of the high-temperature furnace is improved, and gas leakage is avoided, namely: when the leakproofness that the sealing door kept the high temperature furnace is closed to needs, then directly promote the sealing door closure, the sealing door contact promotes the conflict pole and deflects, contact cover and contact piece all adopt the stronger material of adhesion, utilize contact piece and contact cover to drive the kelly and remove after the conflict pole deflects, then the kelly slides toward the outside, make the gag lever post more conveniently contact the kelly and obtain spacingly, after the gag lever post block arrived on the gag lever post, the contact piece was not at the contact cover this moment, the spring drives the kelly shrink in automatic re-setting, the kelly drives the gag lever post and is close to the high temperature furnace, finally make the effect that the sealing door laminated the high temperature furnace better, thereby can avoid the inside gas leakage of high temperature furnace or heat loss, improve the result of use of high temperature furnace.
(2) According to the device and the method for recycling the nitrogen-based atmosphere in the gas quenching process, the nitrogen mechanism, the gas supply mechanism and the gas-mediating mechanism are connected between the control box and the high-temperature furnace, and the nitrogen mechanism, the gas supply mechanism and the gas-mediating mechanism are arranged to facilitate the recovery of corresponding gases by utilizing the density characteristics among the gases, so that the use cost of the gases for heat treatment is reduced, and resources are saved, namely: when nitrogen is required to be conveyed into the high-temperature furnace for use, the first electromagnetic valve, the first air pump and the first filter are firstly opened, the nitrogen in the first air storage bottle is pumped into the high-temperature furnace for use, a proper amount of nitrogen is input into the high-temperature furnace and then is closed, the nitrogen exchanges heat with a heat-treated workpiece, the workpiece is rapidly cooled, the nitrogen purification cost is high due to the difficulty in nitrogen purification, the nitrogen is required to be recycled for reuse, the third electromagnetic valve, the third filter and the third air pump are started after the heat treatment is finished, the first electromagnetic valve and the first filter are simultaneously started, the first air pump is started to run in a reverse direction, the gas in the second air storage bottle is conveyed into the high-temperature furnace, and the carbon dioxide is larger than the density of the nitrogen, so that the space of the high-temperature furnace is filled with the carbon dioxide from bottom to top, and the extruded nitrogen is pumped by the first air pump, the nitrogen is filtered by the first filter and returns to the inside of the first gas storage bottle again for storage, so that the purpose of recovering the nitrogen is achieved, at the moment, the inside of the high-temperature furnace is filled with carbon dioxide gas, the carbon dioxide gas also has certain economic value, the carbon dioxide is recovered again, certain economic expenditure can be saved, the second gas pump is started to convey outside air into the inside of the high-temperature furnace at high pressure, the carbon dioxide is extruded and concentrated in the bottom space of the high-temperature furnace by the high-pressure air because the density of the outside air is greater than that of the carbon dioxide, at the moment, the third gas pump, the third electromagnetic valve and the second filter are started, so that the carbon dioxide can be recovered and stored into the second gas storage bottle, the gases with economic values can be conveniently recovered one by utilizing the density characteristics of different gases, and the use cost of the gases for heat treatment is greatly reduced, the waste of resources is avoided.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural diagram of the overall structure of a preferred embodiment of the apparatus and method for recycling a nitrogen-based atmosphere during gas quenching according to the present invention;
FIG. 2 is a schematic view showing a connection structure of the nitrogen gas supply mechanism, the gas supply mechanism and the gas intermediate mechanism shown in FIG. 1;
FIG. 3 is a schematic structural view of the sealing mechanism shown in FIG. 1;
FIG. 4 is an enlarged view of the part A shown in FIG. 1;
FIG. 5 is an enlarged view of the portion B shown in FIG. 1;
FIG. 6 is a flow chart of the nitrogen-based atmosphere recycling apparatus and method in the gas quenching process provided by the present invention.
In the figure: 1. the high-temperature furnace comprises a high-temperature furnace body, 2, a control box, 3, a sealing mechanism, 31, a sealing door, 32, a limiting rod, 33, a clamping rod, 34, a spring, 35, a contact sleeve, 36, a contact rod, 37, a rotating shaft, 38, a torsion spring, 39, a contact piece, 4, a nitrogen mechanism, 41, a first gas storage bottle, 42, a first fixing band, 43, a first gas pipe, 44, a first gas pump, 45, a first electromagnetic valve, 46, a first filter, 5, a gas supply mechanism, 51, a filter cover, 52, a second gas pipe, 53, a second gas pump, 54, a second electromagnetic valve, 6, a gas mechanism, 61, a second gas storage bottle, 62, a second fixing band, 63, a third gas pipe, 64, a third gas pump, 65, a third electromagnetic valve, 66 and a second filter.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1-6, the nitrogen-based atmosphere recycling device in the gas quenching process comprises a high-temperature furnace 1, wherein a control box 2 is arranged on one side of the high-temperature furnace 1, a sealing mechanism 3 is arranged on the high-temperature furnace 1, and a nitrogen mechanism 4, a gas supply mechanism 5 and a gas mediating mechanism 6 are connected between the control box 2 and the high-temperature furnace 1.
Specifically, sealing mechanism 3 includes sealing door 31, the one end of high temperature furnace 1 is rotated and is connected with sealing door 31, sliding connection has kelly 33 on the high temperature furnace 1, it has spring 34 to contradict on the kelly 33, the last contact cover 35 that has cup jointed of kelly 33.
Specifically, one side of kelly 33 is equipped with the feeler lever 36, fixedly connected with pivot 37 on the feeler lever 36, pivot 37 rotates and connects high temperature furnace 1, the winding has torsional spring 38 in the pivot 37, the one end block of torsional spring 38 is on the inner wall of pivot 37 and other end block at high temperature furnace 1.
Specifically, one end of the contact rod 36 is sleeved on the clamping rod 33, a contact piece 39 is arranged inside the contact rod 36 close to the clamping rod 33, the sealing door 31 is abutted against the contact rod 36, one end of the clamping rod 33 extends to the outside of the high-temperature furnace 1, the clamping rod 33 is clamped with the limiting rod 32, and the limiting rod 32 is rotatably connected with the sealing door 31; be equipped with sealing mechanism 3 on high temperature furnace 1, through sealing mechanism 3's setting and then be convenient for drive makes things convenient for the high temperature furnace gate auto-lock, improves when conveniently opening the gas tightness of high temperature furnace 1 avoids gaseous revealing, saves the resource, promptly: when the sealing door 31 needs to be closed to maintain the sealing performance of the high temperature furnace 1, the sealing door 31 is directly pushed to be closed, the sealing door 31 contacts and pushes the contact rod 36 to deflect, the contact sleeve 35 and the contact sheet 39 both adopt materials with strong adhesion, the contact sheet 39 and the contact sleeve 35 are utilized to drive the clamping rod 33 to move after the contact rod 36 deflects, the clamping rod 33 slides outwards, so that the limiting rod 32 is more convenient to contact the clamping rod 33 to be limited, after the limiting rod 32 is clamped on the limiting rod 32, the contact sheet 39 does not contact the contact sleeve 35, the spring 34 drives the clamping rod 33 to contract in automatic reset, the clamping rod 33 drives the limiting rod 32 to be close to the high temperature furnace 1, and finally the effect of attaching the sealing door 31 to the high temperature furnace 1 is better, thereby, gas leakage or heat loss inside the high-temperature furnace 1 can be avoided, and the use effect of the high-temperature furnace 1 is improved.
Specifically, nitrogen mechanism 4 includes first gas bomb 41, the inside of control box 2 is equipped with first gas bomb 41, the winding has first fixed band 42 on the first gas bomb 41, the both ends fixed connection control box 2 of first fixed band 42, be connected with first trachea 43 on the first gas bomb 41.
Specifically, the first air pipe 43 penetrates through the control box 2 and extends into the high temperature furnace 1, a first air pump 44, a first electromagnetic valve 45 and a first filter 46 are installed inside the control box 2, and the first air pump 44, the first electromagnetic valve 45 and the first filter 46 are respectively installed on the first air pipe 43.
Specifically, air supply mechanism 5 includes second trachea 52, the inside of control box 2 is equipped with second trachea 52, the one end of second trachea 52 extends to the inside of high temperature furnace 1, install filter mantle 51 on the 2 lateral walls of control box.
Specifically, the other end of the second air pipe 52 extends into the filter housing 51, a second electromagnetic valve 54 and a second air pump 53 are arranged inside the control box 2, and the second electromagnetic valve 54 and the second air pump 53 are mounted on the second air pipe 52.
Specifically, the gas mechanism 6 includes third trachea 63, the internally mounted of control box 2 has third trachea 63, the one end of third trachea 63 extends to the inside of high temperature furnace 1, one side fixedly connected with second fixed band 62 of control box 2, the winding has second gas bomb 61 on the second fixed band 62.
Specifically, the other end of the third air pipe 63 is connected with the second air storage bottle 61, a third air pump 64, a third electromagnetic valve 65 and a second filter 66 are arranged inside the control box 2, and the third air pump 64, the third electromagnetic valve 65 and the second filter 66 are respectively installed on the third air pipe 63; be connected with nitrogen gas mechanism 4, air feed mechanism 5 and between 1 in control box 2 and high temperature furnace and construct 6, through nitrogen gas mechanism 4 air feed mechanism 5 and the density characteristic that conveniently utilizes between the gas that sets up of between the gas mechanism 6 can be retrieved corresponding gas, reduces the gaseous use cost of thermal treatment, resources are saved, promptly: when nitrogen needs to be conveyed into the high-temperature furnace 1 for use, the first electromagnetic valve 45, the first air pump 44 and the first filter 46 are firstly opened, the nitrogen in the first gas storage bottle 41 is pumped into the high-temperature furnace 1 for use, a proper amount of nitrogen is input into the high-temperature furnace 1 and then is closed, the workpiece subjected to heat exchange treatment by the nitrogen is quickly cooled, the purification cost of the nitrogen is high due to the difficulty in purifying the nitrogen, therefore, the nitrogen needs to be recycled and reused, the third electromagnetic valve 65, the third filter 66 and the third air pump 64 are started after the heat treatment is finished, the first electromagnetic valve 45 and the first filter 46 are simultaneously started, the first air pump 44 is simultaneously started for reverse operation, the gas in the second gas storage bottle 61 is conveyed into the high-temperature furnace 1, and carbon dioxide is higher than the density of the nitrogen, the carbon dioxide is filled in the space of the high temperature furnace 1 from bottom to top, the first air pump 44 pumps the extruded nitrogen, the nitrogen is filtered by the first filter 46 and returns to the inside of the first air storage bottle 41 for storage, so as to achieve the purpose of recovering the nitrogen, at this time, the inside of the high temperature furnace 1 is filled with the carbon dioxide, since the carbon dioxide has a certain economic value and is recovered again, and certain economic expenditure can be saved, the second air pump 53 is started to convey the outside air into the inside of the high temperature furnace 1 at high pressure, and since the density of the outside air is greater than that of the carbon dioxide, the high pressure air extrudes the carbon dioxide to concentrate in the bottom space of the high temperature furnace 1, at this time, the third air pump 64, the third electromagnetic valve 65 and the second filter 66 are started, so as to recover and store the carbon dioxide into the inside of the second air storage bottle 61, and then conveniently utilize the density characteristic of different gases to carry out one by one recovery to the gas that has economic value, greatly reduced the gas use cost of thermal treatment, avoided the waste of resource.
The method of the nitrogen-based atmosphere recycling device in the gas quenching process comprises the following steps:
s1: when the high-temperature furnace 1 is used for heat treatment, workpieces are transported into the high-temperature furnace 1 one by one for heating, and the high-temperature furnace 1 obtains a good sealing effect through the sealing mechanism 3, so that gas leakage is avoided;
s2: then after heating, starting the nitrogen mechanism 4 to convey nitrogen into the high-temperature furnace 1, and rapidly cooling the high-temperature workpiece through the high heat exchange coefficient characteristic of the nitrogen, so that the workpiece has excellent mechanical properties, residual stress is eliminated, and the metal cutting processability is improved;
s3: and finally, in order to recycle high-value nitrogen, the gas-dielectric mechanism 6 is opened to release carbon dioxide, the nitrogen is recycled through the nitrogen mechanism 4 by utilizing the characteristic that the density of the carbon dioxide is greater than that of the nitrogen, and in order to recycle carbon dioxide with economic value, the gas supply mechanism 5 is opened, air is pumped into the high-temperature furnace 1 to press and concentrate carbon dioxide gas, so that the carbon dioxide is recycled into the gas-dielectric mechanism 6, the gas density characteristic is further conveniently utilized to be recycled one by one, the cost of heat treatment is reduced, and resources are saved.
When the sealing door 31 needs to be closed to maintain the sealing performance of the high-temperature furnace 1, the sealing door 31 is directly pushed to be closed, the sealing door 31 contacts and pushes the touch rod 36 to deflect, the contact sleeve 35 and the contact piece 39 are made of materials with strong adhesion, the touch rod 36 deflects and then drives the clamping rod 33 to move by using the contact piece 39 and the contact sleeve 35, the clamping rod 33 slides outwards, so that the limiting rod 32 is more convenient to contact the clamping rod 33 to be limited, after the limiting rod 32 is clamped on the limiting rod 32, the contact piece 39 does not contact the contact sleeve 35, the spring 34 drives the clamping rod 33 to contract in automatic reset, the clamping rod 33 drives the limiting rod 32 to be close to the high-temperature furnace 1, and finally, the effect that the sealing door 31 is attached to the high-temperature furnace 1 is better, so that gas leakage or heat loss inside the high-temperature furnace 1 can be avoided, and the use effect of the high-temperature furnace 1 is improved; when nitrogen needs to be conveyed into the high-temperature furnace 1 for use, the first electromagnetic valve 45, the first air pump 44 and the first filter 46 are firstly opened, the nitrogen in the first air storage bottle 41 is pumped into the high-temperature furnace 1 for use, a proper amount of nitrogen is input into the high-temperature furnace 1 and then is closed, the workpiece subjected to heat exchange heat treatment by the nitrogen is quickly cooled, the purification cost of the nitrogen is high due to the difficulty in purifying the nitrogen, therefore, the nitrogen needs to be recycled, the third electromagnetic valve 65, the third filter 66 and the third air pump 64 are started after the heat treatment is finished, the first electromagnetic valve 45 and the first filter 46 are simultaneously started, the first air pump 44 is simultaneously started for reverse operation, the gas in the second air storage bottle 61 is conveyed into the high-temperature furnace 1, and because the carbon dioxide is higher than the density of the nitrogen, the carbon dioxide firstly fills the space of the high-temperature furnace 1 from bottom to top, the first air pump 44 sucks the squeezed nitrogen, the nitrogen is filtered by the first filter 46 and returns to the inside of the first air storage bottle 41 again for storage, so that the purpose of recovering the nitrogen is achieved, at the moment, the inside of the high-temperature furnace 1 is filled with carbon dioxide, the carbon dioxide is recovered again due to certain economic value of the carbon dioxide, certain economic expenditure can be saved, the second air pump 53 is started to convey outside air into the inside of the high-temperature furnace 1 at high pressure, the high-pressure air extrudes the carbon dioxide to concentrate in the bottom space of the high-temperature furnace 1 due to the fact that the density of the outside air is higher than that of the carbon dioxide, at the moment, the third air pump 64, the third electromagnetic valve 65 and the second filter 66 are started, so that the carbon dioxide can be recovered and stored into the second air storage bottle 61, and further, the gases with economic value can be recovered one by utilizing the density characteristics of different gases, greatly reduces the use cost of the gas for heat treatment and avoids the waste of resources.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The utility model provides a nitrogen base atmosphere cyclic utilization device in gaseous quenching process, a serial communication port, including high temperature furnace (1), one side of high temperature furnace (1) is equipped with control box (2), install sealing mechanism (3) on high temperature furnace (1), be connected with nitrogen gas mechanism (4), air feed mechanism (5) and mediate gas mechanism (6) between control box (2) and high temperature furnace (1).
2. The nitrogen-based atmosphere recycling device in the gas quenching process as claimed in claim 1, wherein: sealing mechanism (3) are including sealing door (31), the one end of high temperature furnace (1) is rotated and is connected with sealing door (31), sliding connection has kelly (33) on high temperature furnace (1), it has spring (34) to contradict on kelly (33), contact cover (35) has been cup jointed on kelly (33).
3. The nitrogen-based atmosphere recycling device in the gas quenching process as claimed in claim 2, wherein: one side of kelly (33) is equipped with and supports feeler lever (36), fixedly connected with pivot (37) is gone up to feeler lever (36), pivot (37) rotate and connect high temperature furnace (1), the winding has torsional spring (38) on pivot (37), the one end block of torsional spring (38) is on the inner wall of pivot (37) and other end block at high temperature furnace (1).
4. The nitrogen-based atmosphere recycling device in the gas quenching process as claimed in claim 3, wherein: the utility model discloses a high temperature furnace, including the card pole (33), the one end cover of reaching feeler lever (36) is on card pole (33), the feeler lever (36) is close to the inside of card pole (33) is equipped with contact piece (39), sealing door (31) are contradicted on conflict pole (36), the one end of card pole (33) extends to the outside of high temperature furnace (1), the last block of card pole (33) has spacing pole (32), spacing pole (32) rotate and connect sealing door (31).
5. The nitrogen-based atmosphere recycling device in the gas quenching process as claimed in claim 1, wherein: nitrogen mechanism (4) are including first gas bomb (41), the inside of control box (2) is equipped with first gas bomb (41), the winding has first fixed band (42) on first gas bomb (41), both ends fixed connection control box (2) of first fixed band (42), be connected with first trachea (43) on first gas bomb (41).
6. The nitrogen-based atmosphere recycling device in the gas quenching process as claimed in claim 5, wherein: the first air pipe (43) penetrates through the control box (2) and extends to the inside of the high-temperature furnace (1), a first air pump (44), a first electromagnetic valve (45) and a first filter (46) are installed inside the control box (2), and the first air pump (44), the first electromagnetic valve (45) and the first filter (46) are installed on the first air pipe (43) respectively.
7. The nitrogen-based atmosphere recycling device in the gas quenching process as claimed in claim 1, wherein: air feed mechanism (5) include second trachea (52), the inside of control box (2) is equipped with second trachea (52), the one end of second trachea (52) extends to the inside of high temperature furnace (1), install filter mantle (51) on control box (2) lateral wall.
8. The device for recycling the nitrogen-based atmosphere in the gas quenching process according to claim 7, wherein: the other end of the second air pipe (52) extends into the filter cover (51), a second electromagnetic valve (54) and a second air pump (53) are arranged inside the control box (2), and the second electromagnetic valve (54) and the second air pump (53) are installed on the second air pipe (52).
9. The nitrogen-based atmosphere recycling device in the gas quenching process as claimed in claim 1, wherein: mediate gas mechanism (6) and include third trachea (63), the internally mounted of control box (2) has third trachea (63), the one end of third trachea (63) extends to the inside of high temperature furnace (1), one side fixedly connected with second fixed band (62) of control box (2), the winding has second gas bomb (61) on second fixed band (62), the other end and the second gas bomb (61) of third trachea (63) link to each other, the inside of control box (2) is equipped with third air pump (64), third solenoid valve (65) and second filter (66), install respectively on third trachea (63) third air pump (64), third solenoid valve (65) and second filter (66).
10. The method for recycling the nitrogen-based atmosphere in the gas quenching process of claim 9, which is characterized by comprising the following steps:
s1: when the high-temperature furnace (1) is used for heat treatment, firstly, workpieces are transported into the high-temperature furnace (1) one by one to be heated, and the high-temperature furnace (1) is sealed by the sealing mechanism (3) to avoid gas leakage;
s2: then after heating is finished, starting the nitrogen mechanism (4) to convey nitrogen into the high-temperature furnace (1), and rapidly cooling the high-temperature workpiece through the high heat exchange coefficient characteristic of the nitrogen;
s3: and finally, in order to recycle the nitrogen, the gas-mediating mechanism (6) is opened to release carbon dioxide, the nitrogen is recycled through the nitrogen mechanism (4) by utilizing the characteristic that the density of the carbon dioxide is greater than that of the nitrogen, and in order to recycle the carbon dioxide, the gas supply mechanism (5) is opened, air is pumped into the high-temperature furnace (1) to press and concentrate the carbon dioxide gas, so that the carbon dioxide is recycled into the gas-mediating mechanism (6) again, and the carbon dioxide is recycled one by utilizing the gas density characteristic.
Priority Applications (1)
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