CN114250348B - Multi-drawer vacuum gas quenching furnace - Google Patents
Multi-drawer vacuum gas quenching furnace Download PDFInfo
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- CN114250348B CN114250348B CN202111573190.2A CN202111573190A CN114250348B CN 114250348 B CN114250348 B CN 114250348B CN 202111573190 A CN202111573190 A CN 202111573190A CN 114250348 B CN114250348 B CN 114250348B
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- 238000010791 quenching Methods 0.000 title claims abstract description 35
- 230000000171 quenching effect Effects 0.000 title claims abstract description 35
- 238000010438 heat treatment Methods 0.000 claims abstract description 98
- 239000010935 stainless steel Substances 0.000 claims abstract description 70
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 70
- 238000003860 storage Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000007664 blowing Methods 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 239000003507 refrigerant Substances 0.000 claims description 8
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- 239000002826 coolant Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000005485 electric heating Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 238000004321 preservation Methods 0.000 description 7
- 239000006104 solid solution Substances 0.000 description 7
- 239000000047 product Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000005056 compaction Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000997 High-speed steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 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
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/773—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material under reduced pressure or vacuum
-
- 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
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
- C21D9/0025—Supports; Baskets; Containers; Covers
-
- 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
-
- 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
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
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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)
- Furnace Details (AREA)
Abstract
The invention provides a multi-drawer vacuum gas quenching furnace which comprises a furnace body, a sealing furnace door, a heating piece, a drawer plate, a gas blowing component and an adjusting component. Wherein, the furnace body is provided with a containing cavity and is sealed by a sealing furnace door. The heating piece is arranged in the accommodating cavity, is provided with a heating cavity, and is provided with an air inlet and an air outlet which are communicated with the heating cavity. The drawer plates are provided with a plurality of drawer plates, and a net storage space for placing stainless steel net sheets is formed between any two adjacent drawer plates. The air blowing component guides the cooled air into the heating cavity through the air inlet. The adjusting component is arranged in the process that the stainless steel mesh is heated, and compresses the stainless steel mesh; and in the cooling process of the stainless steel mesh, the contact area between the stainless steel mesh and the cold air is increased. The multi-drawer vacuum gas quenching furnace provided by the invention can prevent the stainless steel net piece from thermal deformation, and can ensure the cooling effect of the stainless steel net piece, so that the performances of the final stainless steel net piece after being discharged out of the furnace are enhanced.
Description
Technical Field
The invention belongs to the technical field of vacuum solution treatment of stainless steel, and particularly relates to a multi-drawer vacuum gas quenching furnace.
Background
The vacuum quenching furnace is suitable for solution treatment and aging treatment of large and medium vacuum product parts. The vacuum quenching furnace is an advanced vacuum heat treatment device, has excellent performance and unique design, is widely applicable to high-precision parts of alloy materials such as high-speed steel, die steel, stainless steel, alloy steel, titanium alloy and the like, and has the characteristics of vacuum bright gas quenching, annealing, sintering of magnetic materials, rapid cooling and the like. In the production process of the stainless steel mesh, a vacuum quenching furnace is required to be used for gas quenching and solution treatment.
In the prior art, in order to prevent that each stainless steel net piece from being placed into the inside of a hearth after the gas quenching solid solution of stainless steel net piece, the gas circulation and penetrability inside the hearth can separate each stainless steel net piece to certain space appears between each stainless steel net piece, so that the gas circulation is guaranteed. However, because the diameter of the stainless steel mesh sheet raw material (warp and weft) is small, thermal deformation is very easy to occur in the heating and heat-preserving processes of the hearth, so that although the rust resistance and other performances of the final product are enhanced, the shape of the final product cannot be ensured, and the quality of the product is also deteriorated.
Disclosure of Invention
The embodiment of the invention provides a multi-drawer vacuum gas quenching furnace, which aims to solve the problem that the quality of a product is poor due to the fact that a net sheet is easy to deform in the existing gas quenching and solid solution process of a stainless steel net sheet.
In order to achieve the above purpose, the invention adopts the following technical scheme: provided is a multi-drawer vacuum gas quenching furnace, comprising:
The furnace body is provided with a containing cavity, and one end of the furnace body is provided with an opening communicated with the containing cavity;
the sealing furnace door is positioned at the opening and hinged with the furnace body so as to seal the accommodating cavity;
The heating piece is arranged in the accommodating cavity, is provided with a heating cavity and is provided with an air inlet and an air outlet which are communicated with the heating cavity; an air passage is arranged between the outer wall of the heating element and the inner wall of the accommodating cavity;
the drawer plates are arranged in a plurality, are arranged along the horizontal direction and are arranged in the heating cavity at intervals along the vertical direction, and a net storage space for placing stainless steel meshes is formed between any two adjacent drawer plates;
The air blowing component is arranged at the other end of the furnace body and is provided with an air inlet communicated with the accommodating cavity and an air outlet communicated with the air inlet so as to guide the cooled air into the heating cavity from the air inlet; and
The adjusting component is arranged on the furnace body and connected with each drawer plate, and is used for reducing the volume of each net storage space in the process that the stainless steel net sheet is heated so as to enable the stainless steel net sheet to be pressed by each drawer plate; and in the cooling process of the stainless steel mesh sheet, the volume of each mesh storage space is enlarged so as to enlarge the contact area between the stainless steel mesh sheet and cold air introduced from the air inlet.
In one possible implementation manner, the interval direction between the air inlet and the air outlet is set to be a first direction, and the horizontal direction perpendicular to the first direction is set to be a second direction;
the adjustment assembly includes:
the telescopic structures are arranged at intervals along the first direction, and the telescopic structures are arranged along the vertical direction; the fixed end of each telescopic structure is fixedly arranged on the furnace body, and the telescopic ends sequentially penetrate through the furnace body and the heating piece and are connected with the uppermost drawer plate in the heating cavity; and
The flexible connecting belts are arranged and uniformly distributed on two sides of each drawer plate along the second direction, and each flexible connecting belt is connected with each drawer plate respectively;
When the telescopic end of the telescopic structure descends, the drawer plates are close to each other, the volume of the net storage space is reduced, and the flexible connecting bands are in a loose state; when the telescopic end of the telescopic structure ascends, the drawer plates are far away from each other, the volume of the net storage space is increased, and the flexible connecting bands are in a tensioning state.
In some embodiments/examples/illustrations, the flexible connection strip is a carbon fiber braid.
In some embodiments/examples/illustrations, the heating cavity is in a cuboid shape structure, and an electric heating plate is embedded in the side wall of the heating piece and is used for heating each stainless steel mesh plate in the heating cavity.
In some embodiments/examples/illustrations, each of the drawer panels is a rectangular panel adapted to the heating cavity; and connecting ends connected with the flexible connecting bands are arranged at two ends of each drawer plate along the second direction.
In one possible implementation, the air blowing assembly includes:
The heat exchanger is arranged in the accommodating cavity and is provided with a heating medium inlet, a heating medium outlet, a cooling medium inlet and a cooling medium outlet; the heating medium inlet is communicated with the accommodating cavity, and the heating medium outlet is communicated with the air inlet;
the impeller is rotationally arranged on the furnace body and is positioned at the heating medium inlet;
The driver is fixedly arranged on the furnace body, and the power output end is connected with the impeller to drive the impeller to rotate.
In some embodiments/examples/illustrations, the air-blowing assembly further comprises an air-collecting hood, wherein the air-collecting hood is of a cylindrical shape structure and is arranged at the periphery of the impeller in a covering way; one end of the gas collecting hood is communicated with the accommodating cavity, and the other end of the gas collecting hood is communicated with the heating medium inlet.
In some embodiments/examples/illustrations, the heat exchanger is a tube-sheet heat exchanger, and the refrigerant inlet and the refrigerant outlet pass through a side wall of the furnace body and are used for communicating with external circulating cold water.
In one possible implementation, the multi-drawer vacuum gas quenching furnace further includes a buffer assembly, the buffer assembly including:
the fixed sliding drums are arranged in the heating cavity at intervals along the interval direction of the air inlet and the air outlet, and are fixedly connected with the bottom surface of the heating cavity, sliding cavities are arranged in each fixed sliding drum, and sliding holes communicated with the sliding cavities are formed in the top of each fixed sliding drum;
the sliding rods are arranged in a plurality, each sliding rod is arranged in one-to-one correspondence with each sliding cavity, and each sliding rod is arranged along the vertical direction; the bottom ends of the sliding rods penetrate through the corresponding sliding holes on the fixed sliding cylinders and then extend into the sliding cavities; the bottom of each sliding rod is horizontally provided with a circular baffle;
The springs are arranged in a plurality, each spring is arranged in one-to-one correspondence with each sliding cavity, the bottom end of each spring is abutted with the bottom end of each sliding cavity, and the top end of each spring is abutted with the circular baffle; and
The abutting plate is horizontally arranged in the heating cavity and positioned below the lowest drawer plate, and the abutting plate is fixedly connected with the top end of each sliding rod.
In the implementation mode/application embodiment, the heating piece is arranged in the accommodating cavity formed by the furnace body and the furnace door, so that the heating and heat preservation of the stainless steel mesh can be ensured. And set up a plurality of steamer tray boards in the heating chamber, a plurality of steamer tray boards can settle each stainless steel net piece to each steamer tray board can be in the heating process with each stainless steel net piece compaction under the drive of adjusting part, and this kind of structure can prevent the stainless steel net piece at the thermal deformation of heating and heat preservation in-process, and then guarantees the gas quenching solid solution quality of stainless steel net piece. In addition, the adjusting component can drive each drawer plate to ascend after the stainless steel net piece is heated and heat preservation is finished so as to open or enlarge the volume of each net storage space, cold air entering from the air inlet can be guaranteed to be fully contacted with the stainless steel net piece in each net storage space, the stainless steel net piece in each net storage space is fully cooled, the air quenching solid solution effect of the stainless steel net piece is guaranteed, and all performances of the final stainless steel net piece after being discharged out of the furnace are enhanced.
Drawings
Fig. 1 is a schematic diagram of a front view structure of a multi-drawer vacuum gas quenching furnace according to an embodiment of the present invention;
fig. 2 is a schematic top view of a multi-drawer vacuum gas quenching furnace according to an embodiment of the present invention;
FIG. 3 is an enlarged schematic view of the portion A of the multi-drawer vacuum quenching furnace provided in the embodiment of FIG. 1;
Reference numerals illustrate:
10. A furnace body; 11. a receiving chamber; 12. an air passage; 20. sealing the furnace door; 30. a heating member; 31. a heating chamber; 32. an air inlet; 33. an air outlet; 40. a drawer plate; 50. a gas blowing assembly; 51. a heat exchanger; 52. an impeller; 53. a driver; 54. a gas collecting hood; 60. an adjustment assembly; 61. a telescopic structure; 62. a flexible connecting band; 70. a buffer assembly; 71. a fixed slide cylinder; 72. a slide bar; 73. a spring; 74. and an abutting plate.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1 and 3, a description will be given of a multi-drawer vacuum gas quenching furnace according to the present invention. The multi-drawer vacuum gas quenching furnace comprises a furnace body 10, a sealing furnace door 20, a heating element 30, a drawer plate 40, a gas blowing component 50 and an adjusting component 60. The furnace body 10 is provided with a containing cavity 11, and one end of the furnace body 10 is provided with an opening communicated with the containing cavity 11. A sealing oven door 20 is positioned at the opening and hinged with the oven body 10 to seal the accommodating cavity 11. The heating element 30 is arranged in the accommodating cavity 11, the heating element 30 is provided with a heating cavity 31, and an air inlet 32 and an air outlet 33 which are communicated with the heating cavity 31; an air passage 12 is arranged between the outer wall of the heating element 30 and the inner wall of the accommodating cavity 11. The drawer plates 40 are provided with a plurality of drawer plates 40, each drawer plate 40 is arranged along the horizontal direction and is arranged in the heating cavity 31 along the vertical direction at intervals, and a net storage space for placing stainless steel meshes is formed between any two adjacent drawer plates 40. The air blowing component 50 is arranged at the other end of the furnace body 10 and is provided with an air inlet communicated with the accommodating cavity 11 and an air outlet communicated with the air inlet 32, so that cooled air is led into the heating cavity 31 through the air inlet 32. The adjusting component 60 is arranged on the furnace body 10 and connected with each drawer plate 40, and is used for reducing the volume of each net storage space in the process that the stainless steel net sheet is heated so that the stainless steel net sheet is pressed by each drawer plate 40; and the volume of each net storage space is enlarged in the cooling process of the stainless steel net sheet so as to enlarge the contact area between the stainless steel net sheet and the cold air introduced from the air inlet 32.
In the cooling process, the air blowing component 50 is used for cooling the air entering from the air inlet, and guiding the cooled air into the heating cavity 31 through the air outlet and the air inlet 32 to cool the stainless steel mesh sheets on each drawer plate 40 or in the mesh storage space; the gas discharged from the air outlet 33 continues to flow to the air inlet through the gas passage 12.
Compared with the prior art, the multi-drawer vacuum gas quenching furnace provided by the embodiment has the advantages that the heating piece 30 is arranged in the accommodating cavity 11 formed by the furnace body 10 and the furnace door, so that the heating and heat preservation of the stainless steel mesh can be ensured. And set up a plurality of steamer tray boards 40 in heating chamber 31, a plurality of steamer tray boards 40 can settle each stainless steel net piece to each steamer tray board 40 can be under the drive of adjusting part 60, can be with each stainless steel net piece compaction in the heating process, and this kind of structure can prevent the stainless steel net piece at the thermal deformation of heating and heat preservation in-process, and then guarantees the gas quenching solid solution quality of stainless steel net piece. In addition, the adjusting component 60 can drive each drawer plate 40 to ascend after the stainless steel mesh sheet is heated and heat preservation is finished so as to open or enlarge the volume of each mesh storage space, so that cold air entering from the air inlet 32 can be ensured to be fully contacted with the stainless steel mesh sheet in each mesh storage space, further, the stainless steel mesh sheet in each mesh storage space is fully cooled, further, the air quenching and solid solution effect of the stainless steel mesh sheet is ensured, and all performances of the final stainless steel mesh sheet after being discharged out of the furnace are enhanced, and the product has good quality and strong practicability.
It should be noted that, the sealing connection between the sealing oven door 20 and the oven body 10 is in the prior art, and will not be described herein.
In some embodiments, the adjustment assembly 60 may be configured as shown in FIG. 2. Referring to fig. 2, the interval direction between the air inlet 32 and the air outlet 33 is set as a first direction, and the horizontal direction perpendicular to the first direction is set as a second direction.
The adjustment assembly 60 includes a telescoping structure 61 and a flexible connecting strap 62. Wherein, the plurality of telescopic structures 61 are arranged, each telescopic structure 61 is arranged at intervals along the first direction, and each telescopic structure 61 is arranged along the vertical direction; the fixed end of each telescopic structure 61 is fixedly arranged on the furnace body 10, and the telescopic ends sequentially penetrate through the furnace body 10 and the heating piece 30 and are connected with the uppermost drawer plate 40 positioned in the heating cavity 31. The flexible connecting strips 62 are provided with a plurality of flexible connecting strips 62, the flexible connecting strips 62 are uniformly distributed on two sides of each drawer board 40 along the second direction, and each flexible connecting strip 62 is respectively connected with each drawer board 40.
When the telescopic end of the telescopic structure 61 descends, the drawer plates 40 are mutually close, the volume of the net storage space is reduced, and the flexible connecting belts 62 are in a loose state; when the telescopic end of the telescopic structure 61 moves upward, the drawer boards 40 are far away from each other, the volume of the net storage space is increased, and the flexible connecting belts 62 are in a tensioning state.
When the telescopic ends of the telescopic structures 61 are lifted to the maximum position, the drawer boards 40 in the heating chamber 31 are arranged at intervals in the vertical direction, and the interval distance between any two adjacent drawer boards 40 is the same, so that the flexible connection belt 62 is in a tensioning state. In addition, when the telescopic end of the telescopic structure 61 descends to the maximum position, the drawer plates 40 are overlapped with each other to compress the stainless steel mesh sheets in the mesh storage spaces. This kind of structure can compress tightly each stainless steel net piece by heating heat preservation in-process at the stainless steel net piece, prevents that each stainless steel net piece from taking place the heat altered shape, also can open (enlarge) the net space that will deposit simultaneously at stainless steel net piece cooling process, makes the even contact of gas and the stainless steel net piece that air intake 32 got into, guarantees that the stainless steel net piece is by even and comprehensive cooling, simple structure, and the practicality is strong.
The telescoping structure 61 may be a hydraulic telescoping rod.
In some embodiments, the flexible connecting strip 62 may be configured as shown in fig. 1 and 3. Referring to fig. 1 and 3, the flexible connection strap 62 is a carbon fiber woven strap, which has the characteristics of high strength and good heat resistance, and can prevent damage in a high-temperature environment while ensuring that each drawer board 40 is connected. The carbon fiber braiding belt is the prior art and will not be described in detail herein.
In some embodiments, the heating element 30 may have a structure as shown in fig. 1 and 3. Referring to fig. 1 and 3, the heating chamber 31 has a rectangular parallelepiped structure, and the chamber body of the structure can facilitate placement of each stainless steel mesh. An electric heating plate is embedded in the side wall of the heating element 30, and is electrically connected with external mains supply and used for heating the stainless steel mesh plates in the heating cavity 31.
In some embodiments, the drawer board 40 may have a structure as shown in fig. 2. Referring to fig. 2, each drawer panel 40 is a rectangular plate adapted to the heating cavity 31; both ends of each drawer board 40 along the second direction are provided with connecting ends connected with the flexible connecting belts 62. The rectangular plate can be convenient for make, and the connection of each flexible connection area 62 can be guaranteed to the structure of rectangular plate simultaneously, simple structure, and the practicality is strong.
In some embodiments, the above-described air blowing assembly 50 may be configured as shown in fig. 1-2. Referring to fig. 1-2, the air blast assembly 50 includes a heat exchanger 51, an impeller 52, and a driver 53. The heat exchanger 51 is disposed in the accommodating cavity 11 and has a heat medium inlet, a heat medium outlet, a refrigerant inlet and a refrigerant outlet; the heat medium inlet is communicated with the accommodating cavity 11, and the heat medium outlet is communicated with the air inlet 32. The impeller 52 is rotatably disposed on the furnace body 10 at the heat medium inlet. The driver 53 is fixedly arranged on the furnace body 10, and the power output end is connected with the impeller 52 to drive the impeller 52 to rotate.
The impeller 52 is driven to rotate by the driver 53, so that the gas in the accommodating cavity 11 can be circulated in the heating cavity 31 and the accommodating cavity 11, meanwhile, the heat exchanger 51 can be used for cooling the gas entering the air inlet 32 from the heating medium inlet, further, the cooling effect of the stainless steel mesh sheet is guaranteed, the gas quenching solid solution effect of the stainless steel mesh sheet can be guaranteed, and further, the strengthening quality of the stainless steel mesh sheet is guaranteed.
In some embodiments, the above-described air blast assembly 50 may take the configuration shown in FIG. 2. Referring to fig. 2, the air-blowing assembly 50 further includes an air-collecting hood 54, the air-collecting hood 54 having a cylindrical outer shape and being provided around the impeller 52; one end of the gas-collecting hood 54 is communicated with the accommodating cavity 11, and the other end is communicated with a heating medium inlet. The gas collecting hood 54 can ensure that the impeller 52 can blow the gas in the accommodating cavity 11 into the heating cavity 31 from the heating medium inlet, so that the flow of the gas can be ensured, and the gas collecting hood has a simple structure and strong practicability.
In some embodiments, the heat exchanger 51 may be configured as shown in fig. 2. Referring to fig. 2, the heat exchanger 51 is a tube-sheet heat exchanger 51, and the refrigerant inlet and the refrigerant outlet both pass through the side wall of the furnace body 10 and are used for communicating with external circulating cold water. The tube-sheet heat exchanger 51 has a better cooling effect, and is of the prior art, and the water cooling mode is also of the prior art, and will not be described herein.
In some embodiments, the cushioning assembly 70 may be configured as shown in FIG. 3. Referring to fig. 3, the multi-drawer vacuum gas quenching furnace further includes a buffer assembly 70, wherein the buffer assembly 70 includes a fixed slide 71, a slide bar 72, a spring 73, and an abutment plate 74. The fixed sliding drums 71 are provided with a plurality of fixed sliding drums 71, each fixed sliding drum 71 is arranged in the heating cavity 31 along the interval direction of the air inlet 32 and the air outlet 33, and is fixedly connected with the bottom surface of the heating cavity 31, each fixed sliding drum 71 is provided with a sliding cavity, and the top of each fixed sliding drum 71 is provided with a sliding hole communicated with the sliding cavity. The sliding rods 72 are arranged in a plurality, each sliding rod 72 is arranged in a one-to-one correspondence with each sliding cavity, and each sliding rod 72 is arranged along the vertical direction; the bottom ends of the sliding rods 72 penetrate through the sliding holes on the corresponding fixed sliding drums 71 and then extend into the sliding cavities; the bottom of each slide bar 72 is horizontally provided with a circular baffle. The springs 73 are provided with a plurality of springs 73, the springs 73 are arranged in one-to-one correspondence with the sliding cavities, the bottom end of each spring 73 is abutted with the bottom end of the sliding cavity, and the top end is abutted with the circular baffle. The abutting plate 74 is horizontally arranged in the heating cavity 31 and is positioned below the lowest drawer plate 40, and the abutting plate 74 is fixedly connected with the top end of each sliding rod 72.
Because the lowest drawer plate 40 needs to be tightly abutted against the bottom of the heating cavity 31 when the telescopic structures 61 drive the drawer plates 40 to descend and are stacked together, errors exist in the telescopic length of the telescopic structures 61, and after the lowest drawer plate 40 is abutted against the heating cavity 31, the temperature of the stainless steel mesh at the bottom of the telescopic structures exceeds that of other stainless steel mesh plates, and the specified heating temperature may be exceeded, so that other crystals are precipitated. The buffer assembly 70 thus provided prevents the lowermost drawer plate 40 from directly contacting the bottom surface of the heating chamber 31, ensuring uniform heating of the stainless steel mesh. Meanwhile, the mode that the spring 73 springs the sliding rod 72 and the abutting plate 74 can prevent the bottom surface of the heating cavity 31 or the drawer plate 40 from being crushed due to the fact that the telescopic end of the telescopic structure 61 is too large in error or travel, the drawer plate 40 and the heating cavity 31 can be effectively protected, and the telescopic type heating device is simple in structure and strong in practicability. The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (8)
1. The utility model provides a many drawers vacuum gas quenching stove which characterized in that includes:
The furnace body is provided with a containing cavity, and one end of the furnace body is provided with an opening communicated with the containing cavity;
the sealing furnace door is positioned at the opening and hinged with the furnace body so as to seal the accommodating cavity;
The heating piece is arranged in the accommodating cavity, is provided with a heating cavity and is provided with an air inlet and an air outlet which are communicated with the heating cavity; an air passage is arranged between the outer wall of the heating element and the inner wall of the accommodating cavity; setting the interval direction of the air inlet and the air outlet as a first direction, and setting the horizontal direction perpendicular to the first direction as a second direction;
the drawer plates are arranged in a plurality, are arranged along the horizontal direction and are arranged in the heating cavity at intervals along the vertical direction, and a net storage space for placing stainless steel meshes is formed between any two adjacent drawer plates;
The air blowing component is arranged at the other end of the furnace body and is provided with an air inlet communicated with the accommodating cavity and an air outlet communicated with the air inlet so as to guide the cooled air into the heating cavity from the air inlet; and
The adjusting component is arranged on the furnace body and connected with each drawer plate, and is used for reducing the volume of each net storage space in the process that the stainless steel net sheet is heated so as to enable the stainless steel net sheet to be pressed by each drawer plate; in the cooling process of the stainless steel mesh sheet, the volume of each mesh storage space is enlarged so as to enlarge the contact area between the stainless steel mesh sheet and cold air introduced from the air inlet; the adjusting component comprises a telescopic structure and a flexible connecting belt; the telescopic structures are arranged in a plurality, each telescopic structure is arranged at intervals along the first direction, and each telescopic structure is arranged along the vertical direction; the fixed end of each telescopic structure is fixedly arranged on the furnace body, and the telescopic ends sequentially penetrate through the furnace body and the heating piece and are connected with the uppermost drawer plate in the heating cavity; the flexible connecting belts are arranged in a plurality, the flexible connecting belts are uniformly distributed on two sides of each drawer plate along the second direction, and each flexible connecting belt is respectively connected with each drawer plate; when the telescopic end of the telescopic structure descends, the drawer plates are close to each other, the volume of the net storage space is reduced, and the flexible connecting bands are in a loose state; when the telescopic end of the telescopic structure ascends, the drawer plates are far away from each other, the volume of the net storage space is increased, and the flexible connecting bands are in a tensioning state.
2. The multi-drawer vacuum gas quenching furnace as recited in claim 1, wherein the flexible connecting strip is a woven strip of carbon fibers.
3. The multi-drawer vacuum gas quenching furnace according to claim 1, wherein the heating cavity is of a cuboid appearance structure, and an electric heating plate is embedded in the side wall of the heating piece and is used for heating each stainless steel net plate in the heating cavity.
4. A multi-drawer vacuum gas quenching furnace as claimed in claim 3 wherein each drawer panel is a rectangular panel adapted to the heating chamber; and connecting ends connected with the flexible connecting bands are arranged at two ends of each drawer plate along the second direction.
5. The multi-drawer vacuum gas quenching furnace of claim 1, wherein the gas blowing assembly comprises:
The heat exchanger is arranged in the accommodating cavity and is provided with a heating medium inlet, a heating medium outlet, a cooling medium inlet and a cooling medium outlet; the heating medium inlet is communicated with the accommodating cavity, and the heating medium outlet is communicated with the air inlet;
the impeller is rotationally arranged on the furnace body and is positioned at the heating medium inlet;
The driver is fixedly arranged on the furnace body, and the power output end is connected with the impeller to drive the impeller to rotate.
6. The multi-drawer vacuum gas quenching furnace according to claim 5, wherein the gas blowing assembly further comprises a gas collecting hood, wherein the gas collecting hood is of a cylindrical appearance structure and is covered on the periphery of the impeller; one end of the gas collecting hood is communicated with the accommodating cavity, and the other end of the gas collecting hood is communicated with the heating medium inlet.
7. The multi-drawer vacuum gas quenching furnace as claimed in claim 5, wherein the heat exchanger is a tube-sheet heat exchanger, and the refrigerant inlet and the refrigerant outlet both pass through the side wall of the furnace body and are used for communicating with externally-connected circulating cold water.
8. The multi-drawer vacuum gas quenching furnace of claim 1, further comprising a buffer assembly comprising:
the fixed sliding drums are arranged in the heating cavity at intervals along the interval direction of the air inlet and the air outlet, and are fixedly connected with the bottom surface of the heating cavity, sliding cavities are arranged in each fixed sliding drum, and sliding holes communicated with the sliding cavities are formed in the top of each fixed sliding drum;
the sliding rods are arranged in a plurality, each sliding rod is arranged in one-to-one correspondence with each sliding cavity, and each sliding rod is arranged along the vertical direction; the bottom ends of the sliding rods penetrate through the corresponding sliding holes on the fixed sliding cylinders and then extend into the sliding cavities; the bottom of each sliding rod is horizontally provided with a circular baffle;
The springs are arranged in a plurality, each spring is arranged in one-to-one correspondence with each sliding cavity, the bottom end of each spring is abutted with the bottom end of each sliding cavity, and the top end of each spring is abutted with the circular baffle; and
The abutting plate is horizontally arranged in the heating cavity and positioned below the lowest drawer plate, and the abutting plate is fixedly connected with the top end of each sliding rod.
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