CN111895777A - Novel vacuum atmosphere furnace - Google Patents

Novel vacuum atmosphere furnace Download PDF

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Publication number
CN111895777A
CN111895777A CN202010755336.4A CN202010755336A CN111895777A CN 111895777 A CN111895777 A CN 111895777A CN 202010755336 A CN202010755336 A CN 202010755336A CN 111895777 A CN111895777 A CN 111895777A
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CN
China
Prior art keywords
furnace
cavity
wall
pipe
furnace pipe
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Granted
Application number
CN202010755336.4A
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Chinese (zh)
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CN111895777B (en
Inventor
李海军
孙鸣高
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Luoyang Shenhua Heating Technology Co ltd
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Luoyang Shenhua Heating Technology Co ltd
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Priority to CN202010755336.4A priority Critical patent/CN111895777B/en
Publication of CN111895777A publication Critical patent/CN111895777A/en
Application granted granted Critical
Publication of CN111895777B publication Critical patent/CN111895777B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
    • F27B5/04—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated adapted for treating the charge in vacuum or special atmosphere
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
    • F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
    • F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B5/14—Arrangements of heating devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
    • F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B5/16—Arrangements of air or gas supply devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/04—Casings; Linings; Walls; Roofs characterised by the form, e.g. shape of the bricks or blocks used
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/12—Casings; Linings; Walls; Roofs incorporating cooling arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
    • F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B5/16—Arrangements of air or gas supply devices
    • F27B2005/161—Gas inflow or outflow

Abstract

The invention belongs to the technical field of vacuum furnaces, and particularly relates to a novel vacuum atmosphere furnace, which comprises a furnace pipe, a heating rod and a furnace door, wherein the front end part of the furnace pipe is hermetically connected with the furnace door through a furnace pipe flange, the side wall of the furnace pipe comprises an inner wall and an outer wall which are arranged at intervals from inside to outside, the inner cavity of the furnace pipe is divided into a middle accommodating cavity and an outer transition cavity by the inner wall, a furnace pipe bottom plate for bearing materials is arranged at the bottom of the accommodating cavity, a plurality of heating rods penetrating through the side wall of the furnace pipe are respectively arranged at the upper end and the lower end of the accommodating cavity at intervals, the temperature in the accommodating cavity is quickly increased, an auxiliary gas inlet hole, a thermocouple hole, an air exhaust hole, a furnace pipe cooling air inlet and a furnace pipe cooling air outlet which penetrate through the rear wall of the furnace pipe are arranged at intervals at the rear end part of the furnace pipe, when the accommodating cavity needs to be cooled, the cooling speed is improved, the vacuum atmosphere furnace gas has good tightness, the temperature rise and the temperature decrease are fast, and the ventilation speed is high.

Description

Novel vacuum atmosphere furnace
Technical Field
The invention belongs to the technical field of vacuum furnaces, and particularly relates to a novel vacuum atmosphere furnace.
Background
Conventional vacuum furnace, because the stove courage is the individual layer in the stove, stove courage intensity is low, and rate of rise during the stove heating is low, and cooling rate is slow during the cooling, moreover because stove courage gas tightness is poor, and the speed of taking a breath is low during the evacuation, reduces work efficiency, leads to adopting the operating time of vacuum atmosphere stove processing material long, the cycle length.
Disclosure of Invention
In order to solve the problems in the prior art, the invention discloses a novel vacuum atmosphere furnace, the side wall of a furnace pipe is double-layer, the furnace pipe comprises a containing cavity and a transition cavity, an upper row and a lower row of heating rods are arranged in the containing cavity, the transition cavity is connected with a cooling gas inlet and a cooling gas outlet, the air tightness is good, the temperature rise and the temperature fall are fast, and the air exchange speed is high.
In order to achieve the purpose, the invention adopts the following technical scheme:
a novel vacuum atmosphere furnace comprises a furnace body, a bottom plate, a furnace cover and a rear cover plate, wherein the bottom plate, the furnace cover and the rear cover plate are respectively detachably connected with the furnace body, the novel vacuum atmosphere furnace also comprises a furnace liner, a heating rod and a furnace door, the furnace liner is arranged in the middle of the furnace body, the front end part of the furnace liner is hermetically connected with the furnace door through a furnace liner flange, the side wall of the furnace liner comprises an inner wall and an outer wall which are arranged at intervals from inside to outside, the inner cavity of the furnace liner is divided into a containing cavity at the middle part and a transition cavity at the outside by the inner wall, the bottom of the containing cavity is provided with the furnace liner bottom plate for bearing materials, the upper end and the lower end of the containing cavity are respectively provided with a plurality of heating rods which penetrate through the side wall of the furnace liner at intervals, the rear end part of the furnace liner is provided with auxiliary gas inlet holes which penetrate through the rear wall of the furnace liner, thermocouple holes, exhaust holes, the furnace, one end of the air exhaust hole is communicated with the accommodating cavity, the other end of the air exhaust hole is communicated with external vacuum-pumping equipment, one ends of the furnace cooling air inlet and the furnace cooling air outlet are respectively communicated with the outside, and the other ends of the furnace cooling air inlet and the furnace cooling air outlet are respectively communicated with the transition cavity.
Further, still the interval is provided with a plurality of even boards between the inner wall of stove courage and outer wall, all corresponds on every even board to be equipped with the air vent that runs through even board, and the position dislocation of air vent sets up on the adjacent even board, even board falls into a plurality of latticed spaces with the transition chamber, through setting up the air vent intercommunication on even board between the latticed space.
Further, the furnace inner cavity comprises a front cavity and a rear cavity, the cross section area of the rear cavity is larger than that of the front cavity, the side wall of the furnace corresponding to the front cavity is a single-layer wall, the side wall of the furnace corresponding to the rear cavity comprises an inner wall and an outer wall which are arranged at intervals from inside to outside, and the inner wall separates the rear cavity into a containing cavity at the middle part and an external transition cavity.
Furthermore, the heating rod is arranged in the corundum tube, two ends of the corundum tube respectively penetrate through the side wall of the furnace pipe, two ends of the corundum tube are respectively sleeved with a sealing flange, the sealing flanges are connected with the outer circular surface of the side wall of the furnace pipe, a sealing ring pressing ring is arranged between the corundum tube and the sealing flanges, and each sealing flange is respectively connected with a flange cover in an anastomotic mode.
Furthermore, a water cooling jacket is sleeved at the front end of the furnace pipe.
Furthermore, a furnace door heat preservation device matched with the inner diameter of the front end of the furnace pipe is arranged on one side of the furnace door facing the furnace pipe, and a sealing ring is embedded on the contact surface of the furnace pipe flange and the furnace door.
Furthermore, refractory bricks are arranged between the furnace pipe and the bottom plate and between the furnace pipe and the furnace opening, a heat insulation plate is arranged between the furnace pipe and the rear cover plate, and a heat insulation soft blanket is arranged between the furnace pipe and the upper cover.
Furthermore, four corners of the bottom plate are provided with brackets.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the side wall of the furnace pipe is of a double-layer structure, double layers of heat insulation are realized, the inner cavity of the furnace pipe is divided into a containing cavity in the middle and an external transition cavity, the bottom of the containing cavity is provided with a furnace pipe bottom plate for bearing materials, the upper end and the lower end of the containing cavity are respectively provided with a plurality of heating rods penetrating through the side wall of the furnace pipe at intervals, and the upper row and the lower row of heating rods are used for improving the power of unit area, improving the uniformity of the temperature in;
2. according to the invention, the furnace transition cavity is communicated with the cooling air inlet and the furnace cooling air outlet, the front end of the furnace is also sleeved with the water cooling sleeve, when the furnace accommodating cavity needs to be cooled, cooling air is introduced from the cooling air inlet, enters the furnace transition cavity and is discharged from the furnace cooling air outlet after passing through the latticed space, so that the heat in the furnace is taken away, and the cooling speed is improved;
3. the front end part of the furnace liner is connected with a furnace door in a sealing way through a furnace liner flange, a sealing ring is arranged between the furnace liner and the furnace door, the heating rod is arranged in the corundum tube, the sealing flanges are respectively sleeved at two ends of the corundum tube, a sealing ring pressing ring is arranged between the corundum tube and the sealing flanges, the air tightness is good, a furnace liner accommodating cavity is communicated with an auxiliary gas inlet hole and an air suction hole, and a ventilation and vacuum pumping speed block is arranged.
Drawings
FIG. 1 is a schematic cross-sectional structural view of the present invention;
FIG. 2 is a schematic view of the rear view of the present invention with the rear cover plate removed;
FIG. 3 is a schematic view of the structure of detail A in FIG. 2;
in the above figures: 1-a scaffold; 2-a bottom plate; 3-refractory bricks; 4-rear cover plate; 5-insulating board; 6-furnace pipe; 7-supporting a furnace hearth bottom plate; 8-furnace bottom plate; 9-softening the blanket; 10-furnace cover; 11-water cooling jacket; 12-furnace flange; 13-sealing ring; 14-oven door; 15-furnace door heat preservation; 16-a sealing flange; 17-a flange cover; 18-corundum tubes; 19-a seal ring clamp ring; 20-heating rod; 21-a furnace cooling air inlet; 22-a furnace cooling air outlet; 23-auxiliary gas inlet holes; 24-thermocouple holes; 25-air extraction holes; 26-connecting plate.
Detailed Description
In order to better understand the present invention, the following examples are further provided to illustrate the present invention, but the present invention is not limited to the following examples.
The invention is explained in detail by combining with attached drawings 1-3, comprising a furnace body, a bottom plate 2, a furnace cover 10 and a back cover plate 4, wherein four corners of the bottom plate 2 are provided with brackets 1, the brackets 1 support the whole furnace body, the bottom plate 2, the furnace cover 10 and the back cover plate 4 are respectively detachably connected with the furnace body, the vacuum furnace further comprises a furnace pipe 6, a heating rod 20 and a furnace door 14, the heating rod 20 is arranged in a corundum pipe 18, two ends of the corundum pipe 18 respectively penetrate through the side wall of the furnace pipe 6, two ends of the corundum pipe 18 are respectively sleeved with a sealing flange 16, the sealing flange 16 is connected with the outer circular surface of the side wall of the furnace pipe 6, a sealing ring pressing ring 19 is arranged between the corundum pipe 18 and the sealing flange 16, each sealing flange 16 is respectively matched and connected with a flange cover 17, the furnace pipe 6 for improving the sealing effect is arranged in the middle part of the furnace body, refractory bricks, a heat insulation board 5 is arranged between a furnace pipe 6 and a rear cover plate 4, a heat insulation soft blanket 9 is arranged between the furnace pipe 6 and an upper cover 10, the whole furnace pipe 6 is pushed from the rear side of a hearth, a special-shaped brick is clamped and fixed at a furnace opening, the front end part of the furnace pipe 6 is hermetically connected with a furnace door 14 through a furnace pipe flange 12, a water cooling sleeve 11 is sleeved at the front end of the furnace pipe 6, the water cooling sleeve 11 is arranged to improve the heat dissipation capability and accelerate the heat dissipation speed, the side of the furnace door 14 facing the furnace pipe 6 is provided with a furnace door heat insulation which is matched with the inner diameter of the front end of the furnace pipe 6, a sealing ring 13 is embedded on the contact surface of the furnace pipe flange 12 and the furnace door 14 to improve the inner sealing performance of the furnace pipe 6, the side wall of the furnace pipe 6 comprises an inner wall and an outer wall which are arranged at intervals from inside to outside, the double-layer wall insulates heat, the inner wall divides the inner cavity of the furnace pipe 6 into a middle, each connecting plate 26 is correspondingly provided with vent holes penetrating through the connecting plate 26, the positions of the vent holes on the adjacent connecting plates 26 are arranged in a staggered manner, the connecting plates 26 divide the transition cavity into a plurality of latticed spaces, the heat dissipation capacity is improved, the latticed spaces are communicated through the vent holes arranged on the connecting plates 26, a furnace bottom plate 8 for bearing materials is arranged at the bottom of the accommodating cavity, the furnace bottom plate 8 is arranged on a furnace bottom plate support, the furnace bottom plate support is fixed on the wall of the accommodating cavity, a plurality of heating rods 20 penetrating through the side wall of the furnace 6 are respectively arranged at the upper end and the lower end of the accommodating cavity at intervals, the upper row and the lower row of heating rods 20 are uniformly distributed, the unit area power is improved, the temperature uniformity in the accommodating cavity is improved, the temperature rise is fast, auxiliary gas inlet holes 23, thermocouple holes 24, air suction holes 25, a furnace cooling inlet 21 and a furnace cooling outlet 22 are arranged at intervals at the rear, the auxiliary gas inlet hole 23 is used for filling auxiliary gas into the containing cavity through containing the cavity, the thermocouple hole 24 is used for installing and measuring the thermocouple containing the temperature in the containing cavity through containing the cavity, one end of the air exhaust hole 25 is communicated with the containing cavity, the other end of the air exhaust hole is communicated with external vacuum pumping equipment, vacuum is formed rapidly, one end of the furnace liner cooling air inlet 21 and one end of the furnace liner cooling air outlet 22 are communicated with the outside respectively, the other end of the furnace liner cooling air inlet 21 are communicated with the transition cavity respectively, when cooling is needed, cooling gas is injected into the transition cavity from the furnace liner cooling air inlet 21, the cooling gas enters the transition cavity and is discharged from the furnace liner cooling air outlet 22, heat is taken away, and the temperature of the containing cavity.
Further, cavity and back cavity before preferred stove courage 6 inner chamber includes, back cavity cross sectional area is greater than preceding cavity cross sectional area, and the stove courage 6 lateral wall that preceding cavity corresponds is single wall, and 6 lateral walls of stove courage that back cavity corresponds include that from interior to exterior interval sets up inner wall and outer wall, and the inner wall separates into the cavity that holds and the outside transition chamber at middle part with the back cavity.
The working process of the invention is as follows:
opening a furnace door 14, placing materials to be processed on a furnace liner bottom plate 8, closing the furnace door 14, communicating one end of an air exhaust hole 25 with a containing cavity, vacuumizing the containing cavity of a furnace liner 6 through the air exhaust hole 25 by external vacuumizing equipment, starting heating by a heating rod 20, measuring the temperature in the containing cavity by setting a thermocouple in a thermocouple hole 24, introducing auxiliary gas into the containing cavity through an auxiliary gas inlet hole 23 when air exchange is needed according to reaction needs, finishing material processing, when the temperature in the furnace liner needs to be reduced, injecting cooling gas into a transition cavity from a furnace liner cooling inlet 21, allowing the cooling gas to enter the transition cavity and be discharged from a furnace liner cooling gas outlet 22, taking away heat, cooling the containing cavity of the furnace liner 6, simultaneously opening circulating water of a water cooling jacket 11, rapidly reducing the temperature of the furnace liner, and finally opening the furnace door 14 to take out the materials in the containing cavity of the furnace liner 6.
The above description is only an application embodiment of the present invention, but the scope of the present invention is not limited thereto, and the scope of the present invention should not be limited by the description, and any equivalent changes made according to the technical solution of the present invention should be covered within the scope of the present invention.

Claims (8)

1. The utility model provides a novel vacuum atmosphere stove, includes furnace body, bottom plate, bell and back shroud, and bottom plate, bell and back shroud can be dismantled with the furnace body respectively and be connected characterized by: the furnace is arranged in the middle of the furnace body, the front end part of the furnace is hermetically connected with the furnace door through a furnace liner flange, the side wall of the furnace liner comprises an inner wall and an outer wall which are arranged at intervals from inside to outside, the inner wall divides the inner cavity of the furnace liner into a containing cavity in the middle and a transition cavity outside, the bottom of the containing cavity is provided with a furnace liner bottom plate for bearing materials, the upper end and the lower end of the containing cavity are respectively provided with a plurality of heating rods which penetrate through the side wall of the furnace liner at intervals, the rear end part of the furnace liner is provided with an auxiliary gas inlet hole, a thermocouple hole, an air exhaust hole, a furnace liner cooling inlet and a furnace liner cooling outlet at intervals, the auxiliary gas inlet hole is communicated with the containing cavity and used for filling auxiliary gas into the containing cavity, the thermocouple hole is communicated with the containing cavity and used for installing and measuring the temperature in the containing cavity, one end of the thermocouple exhaust hole is, one end of the furnace cooling air inlet and one end of the furnace cooling air outlet are respectively communicated with the outside, and the other ends of the furnace cooling air inlet and the furnace cooling air outlet are respectively communicated with the transition cavity.
2. The novel vacuum atmosphere furnace as set forth in claim 1, wherein: still the interval is provided with a plurality of even boards between the inner wall of stove courage and outer wall, and every links all to correspond on the board and is equipped with the air vent that runs through even board, and the position dislocation of air vent sets up on the adjacent even board, even board falls into a plurality of latticed spaces with the transition chamber, through setting up the air vent intercommunication on even board between the latticed space.
3. A novel vacuum atmosphere furnace as claimed in claim 1 or 2, wherein: the furnace inner cavity comprises a front cavity and a rear cavity, the cross section area of the rear cavity is larger than that of the front cavity, the side wall of the furnace corresponding to the front cavity is a single-layer wall, the side wall of the furnace corresponding to the rear cavity comprises an inner wall and an outer wall which are arranged at intervals from inside to outside, and the inner wall separates the rear cavity into a containing cavity at the middle part and an external transition cavity.
4. A novel vacuum atmosphere furnace as claimed in claim 3, wherein: the heating rod is arranged in the corundum tube, two ends of the corundum tube respectively penetrate through the side wall of the furnace pipe, two ends of the corundum tube are respectively sleeved with a sealing flange, the sealing flanges are connected with the outer circular surface of the side wall of the furnace pipe, a sealing ring pressing ring is arranged between the corundum tube and the sealing flanges, and each sealing flange is respectively matched and connected with a flange cover.
5. A novel vacuum atmosphere furnace as claimed in claim 3, wherein: the front end of the furnace pipe is sleeved with a water cooling sleeve.
6. A novel vacuum atmosphere furnace as claimed in claim 3, wherein: the side of the furnace door facing the furnace pipe is provided with a furnace door heat preservation device which is matched with the inner diameter of the front end of the furnace pipe, and a sealing ring is embedded on the contact surface of the furnace pipe flange and the furnace door.
7. A novel vacuum atmosphere furnace as claimed in claim 3, wherein: refractory bricks are arranged between the furnace pipe and the bottom plate and between the furnace pipe and the furnace opening, a heat insulation plate is arranged between the furnace pipe and the rear cover plate, and a heat insulation soft blanket is arranged between the furnace pipe and the upper cover.
8. A novel vacuum atmosphere furnace as claimed in claim 3, wherein: and four corners of the bottom plate are provided with brackets.
CN202010755336.4A 2020-07-31 2020-07-31 Novel vacuum atmosphere furnace Active CN111895777B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010755336.4A CN111895777B (en) 2020-07-31 2020-07-31 Novel vacuum atmosphere furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010755336.4A CN111895777B (en) 2020-07-31 2020-07-31 Novel vacuum atmosphere furnace

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CN111895777A true CN111895777A (en) 2020-11-06
CN111895777B CN111895777B (en) 2022-03-04

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113821063A (en) * 2021-08-04 2021-12-21 北京泰和九思科技有限公司 Kiln multipoint temperature auxiliary detection and compensation control method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10197155A (en) * 1996-12-27 1998-07-31 Shimazu Mekutemu Kk Retort furnace
CN201890915U (en) * 2010-11-29 2011-07-06 苏州中门子科技有限公司 Multifunctional heat treatment furnace for forge piece hydrogenation and vacuum dehydrogenation of titanium alloy
CN203216247U (en) * 2013-01-21 2013-09-25 洛阳华旭利尔电炉有限公司 Novel all-fiber muffle furnace
CN108225023A (en) * 2018-01-31 2018-06-29 洛阳华旭利尔电炉有限公司 A kind of molybdenum plate high-temperature heating treatment atmosphere protection stove

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10197155A (en) * 1996-12-27 1998-07-31 Shimazu Mekutemu Kk Retort furnace
CN201890915U (en) * 2010-11-29 2011-07-06 苏州中门子科技有限公司 Multifunctional heat treatment furnace for forge piece hydrogenation and vacuum dehydrogenation of titanium alloy
CN203216247U (en) * 2013-01-21 2013-09-25 洛阳华旭利尔电炉有限公司 Novel all-fiber muffle furnace
CN108225023A (en) * 2018-01-31 2018-06-29 洛阳华旭利尔电炉有限公司 A kind of molybdenum plate high-temperature heating treatment atmosphere protection stove

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113821063A (en) * 2021-08-04 2021-12-21 北京泰和九思科技有限公司 Kiln multipoint temperature auxiliary detection and compensation control method

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