CN109487053B - Quenching furnace for knife and sword - Google Patents
Quenching furnace for knife and sword Download PDFInfo
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- CN109487053B CN109487053B CN201910025806.9A CN201910025806A CN109487053B CN 109487053 B CN109487053 B CN 109487053B CN 201910025806 A CN201910025806 A CN 201910025806A CN 109487053 B CN109487053 B CN 109487053B
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- 238000010791 quenching Methods 0.000 title claims abstract description 118
- 230000000171 quenching effect Effects 0.000 title claims abstract description 117
- 238000002485 combustion reaction Methods 0.000 claims abstract description 90
- 238000010438 heat treatment Methods 0.000 claims abstract description 44
- 230000005855 radiation Effects 0.000 claims abstract description 27
- 239000007921 spray Substances 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 65
- 239000002737 fuel gas Substances 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 4
- 229920000742 Cotton Polymers 0.000 claims description 3
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 239000000446 fuel Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
- C21D1/34—Methods of heating
-
- 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
-
- 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
- C21D9/18—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for knives, scythes, scissors, or like hand cutting tools
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Tunnel Furnaces (AREA)
Abstract
The invention provides a quenching furnace for a knife and a sword, relates to the technical field of quenching furnaces, and solves the technical problems of low heat utilization rate and uneven heating temperature generated by combustion of the quenching furnace in the prior art. The device comprises a quenching furnace body, wherein the quenching furnace body is hollow, and a hollow cavity in the quenching furnace body is a radiation heating cavity; the quenching furnace body comprises a plurality of furnace layers with cylindrical structures from inside to outside, a gap is reserved between two adjacent furnace layers, a gas accommodating cavity is formed between the two adjacent furnace layers, the gas accommodating cavity close to the radiation heating cavity is a combustion cavity, and the rest gas accommodating cavities are combustion air circulating cavities; the quenching furnace body is provided with a gas inlet channel, a gas nozzle inserted into the gas inlet channel can spray gas to the combustion chamber, the quenching furnace body is provided with an air inlet hole, and air entering the quenching furnace body through the air inlet hole bypasses along the direction from outside to inside of the quenching furnace body to enter different combustion air circulation chambers and finally flows into the combustion chamber. The quenching device is used for quenching the cutter bars.
Description
Technical Field
The invention relates to the technical field of quenching furnaces, in particular to a quenching furnace for a knife and a sword.
Background
The quenching furnace is a furnace heated before quenching the workpiece. The quenching is to put the workpiece into a furnace to be heated to a quenching temperature above a critical point and keep the temperature for a period of time, and then rapidly take out the workpiece from the furnace and put the workpiece into quenching liquid (oil or water) for quenching. The heat source of the furnace can use electricity and fuel, the temperature can be measured by a thermocouple, and the furnace using electricity, gas and liquid fuel can be automatically controlled and regulated by a meter.
The present inventors found that there are at least the following technical problems in the prior art:
the existing quenching furnace for knives and swords has relatively large volume, and the existing quenching heating mode has certain defects and objective limitations, such as uneven temperature, long heating time and high energy consumption.
Disclosure of Invention
The invention aims to provide a quenching furnace for a sword, which solves the technical problems of low heat utilization rate and uneven heating temperature generated by combustion of the quenching furnace in the prior art. The preferred technical solutions of the technical solutions provided by the present invention can produce a plurality of technical effects described below.
In order to achieve the above purpose, the present invention provides the following technical solutions:
The invention provides a quenching furnace for a sword, which comprises a quenching furnace body, wherein the quenching furnace body is of a cylindrical structure with a hollow inside, and a hollow inside of the quenching furnace body is a radiation heating cavity; the quenching furnace body comprises a plurality of furnace layers with cylindrical structures from inside to outside, gaps exist between two adjacent furnace layers, a gas accommodating cavity is formed between the two adjacent furnace layers, the gas accommodating cavity close to the radiation heating cavity is a combustion cavity, and the rest gas accommodating cavities are combustion air circulating cavities; the quenching furnace comprises a quenching furnace body, wherein a gas inlet channel is formed in the quenching furnace body, a gas nozzle inserted into the gas inlet channel can spray gas to the combustion chamber, an air inlet hole is formed in the quenching furnace body, and air entering the quenching furnace body through the air inlet hole bypasses along the direction from outside to inside of the quenching furnace body to enter different combustion air circulation chambers and finally flows into the combustion chamber.
Preferably, the quenching furnace body comprises a first furnace layer, a second furnace layer, a third furnace layer and a fourth furnace layer from inside to outside in sequence; the second furnace layer, the third furnace layer and the fourth furnace layer are provided with the fuel gas inlet channel, and the combustion cavity is formed between the first furnace layer and the second furnace layer; the air inlet hole is formed in the fourth furnace layer, the air inlet hole is formed in the third furnace layer, a gap between the fourth furnace layer and the third furnace layer is a first combustion air circulation cavity, a gap between the third furnace layer and the second furnace layer is a second combustion air circulation cavity, air entering the quenching furnace body through the air inlet hole can flow in the first combustion air circulation cavity and can enter the second combustion air circulation cavity through the air inlet hole, and air in the second combustion air circulation cavity flows into the combustion cavity through a gap between the gas nozzle and the second furnace layer.
Preferably, the air inlet hole and the air inlet hole are positioned at two sides of the central shaft of the quenching furnace body.
Preferably, the fourth furnace layer, the third furnace layer and the second furnace layer are provided with gas inlets, the axes of the gas inlets of the fourth furnace layer, the third furnace layer and the second furnace layer are collinear, and a gas pipeline is inserted into a wind collecting cover of the quenching furnace body and sequentially passes through the gas inlets on the fourth furnace layer and the third furnace layer; the gas inlet holes and the air inlet holes of the fourth furnace layer are distributed on the fourth furnace layer at intervals along the axial direction of the quenching furnace body.
Preferably, the fourth furnace layer comprises an outer shell layer, an insulating layer and an inner layer, wherein the outer shell layer and the inner layer are of cylindrical structures and distributed along the quenching furnace body in the direction from inside to outside, the insulating layer is clamped between the outer shell layer and the inner layer, and the insulating layer is made of aluminum silicate insulating cotton.
Preferably, the quenching furnace for a sword further comprises a wind collecting cover, wherein the wind collecting cover is arranged on the furnace layer on the outermost layer of the quenching furnace body and covers all the air inlet holes, the wind collecting cover is connected with a fan through a pipeline, and air entering the wind collecting cover flows into the air inlet holes.
Preferably, the radiant heating chamber extends through the quench furnace body.
Preferably, both ends of the quenching furnace body are provided with plugging pieces, and the plugging pieces are used for plugging gaps between the ends of adjacent furnace layers; and an exhaust gas discharge hole is formed in the furnace layer positioned at the innermost side of the quenching furnace body.
Preferably, a temperature sensing element is inserted on the quenching furnace body, and a detection head of the temperature sensing element is positioned in the radiation heating cavity.
Preferably, the temperature sensing element is a thermocouple, and the temperature sensing element is connected with an automatic temperature control electromagnetic valve.
When the combustion air is wound into different combustion air circulation cavities along the direction from inside to outside, the combustion air brings heat emitted by the quenching furnace outwards (namely, lost heat) back into the combustion cavity, so that heat loss is reduced, the combustion air is heated, quick combustion is facilitated, and the technical problem of low heat utilization rate caused by combustion of the quenching furnace in the prior art can be solved. In addition, because the cutter bar is positioned in the radiation heating cavity, fuel and combustion air are combusted in the combustion cavity, the cutter bar is subjected to radiation heating in the radiation heating cavity, and the heated temperature is relatively uniform.
The preferred technical scheme of the invention can at least have the following technical effects:
The air inlet holes and the air inlet holes can be positioned at two sides of the central shaft of the quenching furnace body, and the gas inlet holes and the air inlet holes of the fourth furnace layer are distributed along the axial direction of the quenching furnace body, so that the stroke of combustion air is increased, and the combustion air can fully absorb heat generated by combustion of the quenching furnace;
The radiation heating cavity penetrates through the quenching furnace body and is used for being suitable for knife bars with different lengths; the furnace layer at the innermost side of the quenching furnace body is provided with an exhaust gas discharge hole, exhaust gas generated by combustion in the combustion cavity is discharged into the radiation heating cavity through the exhaust gas discharge hole, and the exhaust gas tool setting bar discharged into the radiation heating cavity has the function of oxidation prevention protection.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a quenching furnace for a sword according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a quenching furnace for a sword according to an embodiment of the present invention.
1-A radiant heating chamber; 2-combustion chamber; 3-combustion air circulation chamber; 4-air inlet holes; 5-a first furnace layer; 6-a second furnace layer; 7-a third furnace layer; 8-an air inlet hole; 9-a wind collecting hood; 10-an outer shell layer; 11-an insulating layer; 12-an inner layer; 13-exhaust gas discharge holes; 14-gas pipeline.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, based on the examples herein, which are within the scope of the invention as defined by the claims, will be within the scope of the invention as defined by the claims.
Referring to fig. 1 and 2, the invention provides a quenching furnace for a knife and a sword, which comprises a quenching furnace body, wherein the quenching furnace body is of a cylindrical structure with a hollow inside, the hollow inside of the quenching furnace body is a radiation heating cavity 1, and a knife bar to be quenched is placed in the radiation heating cavity 1; the quenching furnace body comprises a plurality of furnace layers with cylindrical structures from inside to outside, gaps exist between two adjacent furnace layers, a gas accommodating cavity is formed between the two adjacent furnace layers, the gas accommodating cavity close to the radiation heating cavity 1 is a combustion cavity 2, and the rest gas accommodating cavities are combustion air circulating cavities 3; the quenching furnace body is provided with a gas inlet channel, a gas nozzle inserted into the gas inlet channel can spray gas to the combustion chamber 2, the quenching furnace body is provided with an air inlet hole 4, and air entering the quenching furnace body through the air inlet hole 4 (here, the air is combustion air) bypasses along the quenching furnace body from outside to inside into different combustion air circulation chambers 3 and finally flows into the combustion chamber 2. Referring to fig. 2, the number of the combustion air circulation cavities 3 can be two, when the combustion air is wound into different combustion air circulation cavities 3 along the direction from inside to outside, the combustion air brings heat emitted by the quenching furnace outwards (i.e. heat to be lost) back into the combustion cavity 2, so that heat loss is reduced, and meanwhile, the combustion air is heated, so that rapid combustion is facilitated; in addition, because the knife bar is positioned in the radiation heating cavity 1, fuel and combustion air burn in the combustion cavity 2, and the furnace layer at the innermost side of the quenching furnace body is heated (the furnace layer can be made of heat-resistant stainless steel), the knife bar is subjected to radiation heating in the radiation heating cavity 1, is not directly contacted with open fire, and has relatively uniform heating temperature. The quenching furnace for the knives and the swords has the advantages of small volume, high heat utilization rate, high heating speed, uniform temperature, high visibility in a hearth (the radiation heating cavity 1) and easiness in observation.
As an alternative implementation of the embodiment of the invention, referring to fig. 2, the quenching furnace body comprises a first furnace layer 5, a second furnace layer 6, a third furnace layer 7 and a fourth furnace layer from inside to outside in sequence; the second furnace layer 6, the third furnace layer 7 and the fourth furnace layer are provided with fuel gas inlet channels, and a combustion chamber 2 is formed between the first furnace layer 5 and the second furnace layer 6; the air inlet holes 4 are formed in the fourth furnace layer, the air inlet holes 8 are formed in the third furnace layer 7, the air inlet holes 4 and the air inlet holes 8 can be located on two sides of a central shaft of the quenching furnace body, a gap between the fourth furnace layer and the third furnace layer 7 is a first combustion air circulation cavity, a gap between the third furnace layer 7 and the second furnace layer 6 is a second combustion air circulation cavity, air entering the quenching furnace body through the air inlet holes 4 can flow in the first combustion air circulation cavity and can enter the second combustion air circulation cavity through the air inlet holes 8, and air located in the second combustion air circulation cavity flows into the combustion cavity 2 through a gap between the gas nozzle and the second furnace layer 6. The relative positions of the air inlet holes 4 and the air inlet holes 8 can increase the stroke of the combustion air in the first combustion air circulation cavity, so that the combustion air can fully absorb the heat generated by the combustion of the quenching furnace. When the nozzle of the gas nozzle injects fuel into the combustion chamber 2, the fuel is rapidly ejected, a venturi effect (the venturi effect means that low pressure is generated near the fluid flowing at high speed, so as to generate adsorption effect) is generated, so that combustion air is sucked into the combustion chamber 2 through the gap between the gas nozzle and the second furnace layer 6 to be fully mixed with the fuel.
The fourth furnace layer, the third furnace layer 7 and the second furnace layer 6 are provided with gas inlets, the axes of the gas inlets of the fourth furnace layer, the third furnace layer 7 and the second furnace layer 6 are collinear, a gas pipeline 14 is inserted into a gas collecting cover 9 of the quenching furnace body and sequentially passes through the gas inlets on the fourth furnace layer and the third furnace layer 7, as shown in fig. 1 and 2, the gas pipeline 14 is inserted into the gas collecting cover 9 and connected with the fourth furnace layer and the third furnace layer, a gas nozzle is inserted into the gas pipeline 14 and extends into the combustion chamber 2, and the gas nozzle sprays fuel to the combustion chamber 2; the gas inlet holes and the air inlet holes 4 of the fourth furnace layer are distributed on the fourth furnace layer at intervals along the axial direction of the quenching furnace body. Referring to fig. 2, since the gas inlet holes and the air inlet holes 4 of the fourth furnace layer are distributed along the axial direction of the quenching furnace body, after the combustion air in the first combustion air circulation cavity enters the second combustion air circulation cavity through the air inlet holes 8, the combustion air in the second combustion air circulation cavity needs to bypass to the top of the quenching furnace and flows into the combustion cavity 2 through the gap between the gas nozzle and the second furnace layer 6, and the stroke of the combustion air is increased, so that the combustion air can fully absorb the heat to be lost, which is conducted to the outer layer along the quenching furnace body.
As an alternative implementation mode of the embodiment of the invention, the fourth furnace layer comprises an outer shell layer 10, an insulation layer 11 and an inner layer 12, wherein the outer shell layer 10 and the inner layer 12 are of cylindrical structures and are distributed along the quenching furnace body from inside to outside, the insulation layer 11 is clamped between the outer shell layer 10 and the inner layer 12, the insulation layer 11 is made of aluminum silicate insulation cotton, the insulation layer 11 is used for insulating the quenching furnace, a steel pipe is arranged on the fourth furnace layer, the outer shell layer 10 and the inner layer 12 are connected with the steel pipe, and an air inlet hole 4 is formed in the inner side of the steel pipe; the first furnace layer 5, the second furnace layer 6, the third furnace layer 7, the outer shell layer 10 and the inner layer 12 can be made of metal materials; further, referring to fig. 1, the outer contour shape of the outer shell layer 10 may be a square cylindrical structure.
As an alternative implementation mode of the embodiment of the invention, the quenching furnace for the knife and sword further comprises a wind collecting cover 9, wherein the wind collecting cover 9 is arranged on the furnace layer on the outermost layer of the quenching furnace body, and the wind collecting cover 9 covers all the air inlet holes 4, the wind collecting cover 9 is connected with a fan through a pipeline, and air entering the wind collecting cover 9 flows into the air inlet holes 4. The fan is used for pressurizing and conveying combustion air, so that the mixing of the combustion air and the fuel gas is facilitated.
As an alternative implementation manner of the embodiment of the present invention, referring to fig. 1, the radiation heating cavity 1 penetrates through the quenching furnace body, that is, the quenching furnace provided by the present invention is a through furnace, so as to be suitable for knife bars with different lengths, and the length of the quenching furnace body may be 300-1200 mm; the two ends of the quenching furnace body are provided with blocking pieces which are used for blocking gaps between the end parts of adjacent furnace layers, namely, the areas between the end parts of each furnace layer are sealed; the furnace layer at the innermost side of the quenching furnace body is provided with an exhaust gas discharge hole 13, exhaust gas generated by combustion of the combustion cavity 2 is discharged into the radiation heating cavity 1 through the exhaust gas discharge hole 13, and the exhaust gas discharged into the radiation heating cavity 1 has the function of oxidation prevention protection on the tool setting bar.
As an optional implementation manner of the embodiment of the invention, a temperature sensing element is inserted on the quenching furnace body, a detection head of the temperature sensing element is positioned in the radiation heating cavity 1, the temperature sensing element can be a thermocouple and is used for detecting the temperature in the radiation heating cavity 1, the temperature sensing element can be connected with an automatic temperature control electromagnetic valve, and when the thermocouple detects that the temperature in the radiation heating cavity 1 is higher than a preset value, the automatic temperature control electromagnetic valve is disconnected to cut off the supply of fuel gas; when the thermocouple detects that the temperature in the radiation heating cavity 1 is lower than a preset value, the automatic temperature control electromagnetic valve is connected, the supply of fuel gas is connected, and the fuel gas is automatically ignited in a high-temperature environment.
Compared with the existing heating modes, the quenching furnace for the knives and the swords has the following advantages:
(1) For the conventional gas furnace, the invention has the advantages of uniform heating, because the conventional gas furnace is heated by a plurality of independent flame ports, the temperature near the flame ports is high, the temperature at other places is low, and the heating is nonuniform.
(2) Compared with a resistance furnace (also called a muffle furnace), the invention has the advantages of small volume, no limitation of electric power facilities, high heating speed, quite large resistance furnace body quantity with longer hearth, extremely high power and long heating time.
(3) Compared with a high-frequency heating furnace, the invention has the advantages that high-power electric power is not needed, because the high-frequency heating furnace has high requirement on electricity consumption, the high power has 380V industrial electricity, and the energy consumption is extremely high.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A quenching furnace for a sword is characterized by comprising a quenching furnace body, wherein,
The quenching furnace body is of a cylindrical structure with a hollow inside, and the hollow inside is a radiation heating cavity (1);
the quenching furnace comprises a quenching furnace body, wherein the quenching furnace body comprises a plurality of furnace layers with cylindrical structures from inside to outside, gaps exist between two adjacent furnace layers, a gas accommodating cavity is formed between the two adjacent furnace layers, the gas accommodating cavity close to the radiation heating cavity (1) is a combustion cavity (2), and the rest gas accommodating cavities are combustion air circulating cavities (3);
The quenching furnace body is provided with a gas inlet channel, a gas nozzle inserted into the gas inlet channel can spray gas to the combustion chamber (2), the quenching furnace body is provided with an air inlet hole (4), and air entering the quenching furnace body through the air inlet hole (4) bypasses the quenching furnace body from outside to inside into different combustion air circulation chambers (3) and finally flows into the combustion chamber (2);
The quenching furnace body sequentially comprises a first furnace layer (5), a second furnace layer (6), a third furnace layer (7) and a fourth furnace layer from inside to outside; the second furnace layer (6), the third furnace layer (7) and the fourth furnace layer are provided with the fuel gas inlet channel, and the combustion cavity (2) is formed between the first furnace layer (5) and the second furnace layer (6);
The air inlet hole (4) is formed in the fourth furnace layer, the air inlet hole (8) is formed in the third furnace layer (7), a gap between the fourth furnace layer and the third furnace layer (7) is a first combustion air circulation cavity, a gap between the third furnace layer (7) and the second furnace layer (6) is a second combustion air circulation cavity, air entering the quenching furnace body through the air inlet hole (4) can flow in the first combustion air circulation cavity and can enter the second combustion air circulation cavity through the air inlet hole (8), and air in the second combustion air circulation cavity flows into the combustion cavity (2) through a gap between the gas nozzle and the second furnace layer (6);
The air inlet holes (4) and the air inlet holes (8) are positioned on two sides of the central shaft of the quenching furnace body;
the fourth furnace layer comprises an outer shell layer (10), an insulating layer (11) and an inner layer (12), wherein the outer shell layer (10) and the inner layer (12) are of cylindrical structures and distributed along the quenching furnace body from inside to outside, the insulating layer (11) is clamped between the outer shell layer (10) and the inner layer (12), and the insulating layer (11) is made of aluminum silicate insulating cotton.
2. Quenching furnace for knives and swords according to claim 1, characterized in that the fourth furnace layer, the third furnace layer (7) and the second furnace layer (6) are provided with gas inlets and the axes of the gas inlets of the third furnace layer, the third furnace layer and the second furnace layer are collinear, and a gas pipeline (14) is inserted into a wind collecting hood (9) of the quenching furnace body and sequentially passes through the gas inlets on the fourth furnace layer and the third furnace layer (7); the gas inlet holes and the air inlet holes (4) of the fourth furnace layer are distributed on the fourth furnace layer at intervals along the axial direction of the quenching furnace body.
3. The quenching furnace for knives and swords according to claim 1, further comprising a wind collecting hood (9), wherein the wind collecting hood (9) is disposed on the furnace layer of the outermost layer of the quenching furnace body and the wind collecting hood (9) covers all the air inlet holes (4), the wind collecting hood (9) is connected with a fan through a pipe, and air entering the wind collecting hood (9) flows into the air inlet holes (4).
4. Quenching furnace for knives and swords according to claim 1, characterized in that the radiant heating chamber (1) extends through the quenching furnace body.
5. The quenching furnace for a sword according to claim 4, wherein both ends of the quenching furnace body are provided with blocking pieces for blocking gaps between adjacent ends of the furnace layer; and an exhaust gas discharge hole (13) is formed in the furnace layer positioned at the innermost side of the quenching furnace body.
6. Quenching furnace for knives and swords according to claim 1, characterized in that the quenching furnace body is inserted with a temperature sensing element, the detection head of which is located in the radiant heating chamber (1).
7. The quenching furnace for knives and swords according to claim 6, wherein the temperature sensing element is a thermocouple and is connected to an automatic temperature control solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910025806.9A CN109487053B (en) | 2019-01-10 | 2019-01-10 | Quenching furnace for knife and sword |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910025806.9A CN109487053B (en) | 2019-01-10 | 2019-01-10 | Quenching furnace for knife and sword |
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| CN109487053A CN109487053A (en) | 2019-03-19 |
| CN109487053B true CN109487053B (en) | 2024-05-07 |
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