CN116147329A

CN116147329A - Isothermal normalizing atmosphere protection furnace with good heat preservation effect and working method thereof

Info

Publication number: CN116147329A
Application number: CN202310045449.9A
Authority: CN
Inventors: 陈思木; 戚顺银; 王晓丹; 谢连文; 郝宗合
Original assignee: Yajie Wuxi Thermal Technology Co ltd
Current assignee: Yajie Wuxi Thermal Technology Co ltd
Priority date: 2023-01-30
Filing date: 2023-01-30
Publication date: 2023-05-23

Abstract

The invention discloses an isothermal normalizing atmosphere protection furnace with good heat preservation effect and a working method thereof. According to the invention, the furnace chamber can be subjected to reinforced heat preservation treatment by virtue of the heat preservation component, the problem of large heat loss in the furnace chamber is avoided, the energy is saved, the environment is protected, the atmosphere gas can be pre-stored by virtue of the storage component, the continuous and stable supply of the atmosphere gas in the processing is ensured, the problem that the processing is influenced by the lack of the atmosphere gas is avoided, the crucible can be rapidly clamped and fixed under the assistance of the adjustable moving component, the toppling condition of the crucible in the furnace chamber is avoided, meanwhile, the position of the crucible in the furnace chamber can be subjected to X, Y axial adjustment treatment, the processing interval is expanded, the processing position of the crucible can be conveniently adjusted according to different processing demands, and the accuracy of heat treatment processing is improved.

Description

Isothermal normalizing atmosphere protection furnace with good heat preservation effect and working method thereof

Technical Field

The invention relates to the technical field related to atmosphere protection furnaces, in particular to an isothermal normalizing atmosphere protection furnace with good heat preservation effect and a working method thereof.

Background

The main purpose of the atmosphere protection furnace, also called an atmosphere furnace, is to introduce a specific gas for special heat treatment in the case of high-temperature sintering or to protect a heat-treated sample from oxidation. Atmosphere protection is used in the market for the most part to prevent oxidation;

according to different hearth, the furnace can be divided into a tubular atmosphere furnace and a box-type atmosphere furnace, wherein the tubular atmosphere furnace adopts a quartz tube at low temperature and adopts a corundum tube as a furnace tube at high temperature according to different temperatures, and two ends of the tubular atmosphere furnace are matched with flanges for sealing; the box-type atmosphere furnace is mainly formed by integrally welding a box body, lining inorganic heat-insulating materials and sealing an independent furnace door by silica gel. The atmosphere protection furnace is usually provided with the following devices, namely an air inlet pipeline, an air outlet pipeline, a valve, a pressure display device and a vacuum obtaining device, but the atmosphere furnace on the market at present has the following defects in use.

The conventional device has the following disadvantages: the heat preservation and insulation performance of the atmosphere furnace in the market is not ideal at present, the heat in the furnace chamber can be emitted during operation to cause the waste of resources, which is unfavorable for energy conservation and environmental protection, and the atmosphere furnace does not have an atmosphere gas storage function at present, so that the atmosphere gas is extremely easy to be influenced by external pipeline breakage and the like to have a missing condition during operation, the heat treatment and processing of products are influenced, the processing precision is reduced, and the effect is poor;

the current atmosphere furnace on the market can not carry out quick regulation to the position of crucible when the operation, and its inconvenient crucible of taking and putting, its two positions that have restricted the crucible are inconvenient to adjust the use to different processing environment, and adaptability is relatively poor, can not guarantee the fixed stability of crucible simultaneously, can't avoid the condition that the product topples over in the processing appears in the crucible.

Disclosure of Invention

The invention aims to provide an isothermal normalizing atmosphere protection furnace with good heat preservation effect and a working method thereof, so as to solve the problems mentioned in the background.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides an effectual isothermal normalizing atmosphere protection stove keeps warm, includes furnace body, stove chamber and furnace gate, the stove chamber indent is seted up in the furnace body, has filled the stove brick in the stove chamber, can carry out the shutoff to the stove chamber with the help of the stove brick, the furnace gate passes through the connecting piece and rotates to be installed on one side on the furnace body, installs concave piece on furnace gate both sides top, bottom symmetry, and the furnace gate corresponds the laminating and cover the shutoff to the stove chamber at the terminal surface before the furnace body, installs the intake pipe in furnace body one side and stove chamber in-connection, installs the blast pipe in intake pipe below and stove chamber in-connection, installs adjustable moving part in the stove chamber, hides at the furnace body top and installs heat preservation part, installs storage part in furnace body one side.

As a further preferable mode of the technical scheme, sealing elements are arranged around the front end face of the furnace chamber, and the sealing elements are correspondingly attached to the furnace door in a sealing contact mode.

As a further preferable mode of the technical scheme, the top ends and the bottom ends of the two sides of the sealing piece are symmetrically and movably provided with threaded sleeves, positioning screws are rotatably arranged in the threaded sleeves, pressing sheets are fixedly arranged at the tail parts of the positioning screws, and the positioning screws are correspondingly clamped into the concave sheets to press the furnace door.

As the further preferred of this technical scheme, adjustable moving part includes a sharp module, no. two sharp modules, mount pad and four compacting sections, no. one sharp module is hidden to be installed in the middle part of the indoor bottom of stove, no. two sharp modules are installed at a sharp module output, the mount pad is installed at No. two sharp module output, has placed the crucible on the mount pad, and four compacting sections are the rectangle and distribute around on the mount pad.

As a further preferable mode of the technical scheme, the first linear module and the second linear module are arranged in a matched mode, and the output directions of the first linear module and the second linear module are in one-to-one correspondence with the X, Y axial directions.

As the further preferred of this technical scheme, compress tightly the portion and include No. three sharp modules, splint, no. three sharp modules is the rectangle and distributes around on the mount table, and No. three sharp module afterbody extends the mount table, splint are installed and are compressed tightly at No. three sharp module output, and splint and crucible lateral wall laminating.

As the further preferred of this technical scheme, the heat preservation part includes roof, reservation chamber, metal heated board, rock wool heat preservation, glass cotton heat preservation and fixed part, the reservation chamber is the spill and sets up on the furnace body in the top, the roof laminating is installed on the furnace body top, surface mounting has the handle on the roof, metal heated board integral mounting is at the roof lower surface and extend to in the reservation chamber, the rock wool heat preservation laminating is installed at metal heated board inner wall, the glass cotton heat preservation laminating is installed at metal heated board outer wall, and rock wool heat preservation and glass cotton heat preservation correspond to extend to the reservation intracavity, the fixed part is installed on one side top of the furnace body.

As a further preferred of this technical scheme, the fixed part includes riser, dead screw, fixed station and fixed slot, riser fixed mounting is in furnace body top one side, the fixed station is installed and is close to riser one side at the roof upper surface, the fixed slot is seted up in fixed station one side, the dead screw passes the riser through the screw thread is closed soon, and the dead screw afterbody corresponds to alternate to the fixed slot in.

As the further preferred of this technical scheme, storage component includes gas holder, barometer, input tube, output tube, air pump and transfer pipe, the gas holder passes through the support mounting and is close to intake pipe one side at the furnace body lateral wall, the barometer intercommunication is installed at gas holder one side top, input tube intercommunication is seted up in gas holder one side bottom, output tube intercommunication is installed and is kept away from input tube one side at the gas holder, the air pump passes through the support mounting at the furnace body lateral wall and communicates with the output tube, the transfer pipe is installed between air pump output, intake pipe.

An isothermal normalizing atmosphere protection furnace with good heat preservation effect and a working method thereof are provided:

the method comprises the following steps:

step 1, feeding a product: the furnace door is opened, a product is placed in the crucible and then placed on the mounting table for limiting, furnace bricks are pushed into the furnace chamber, and then the furnace door is closed, so that the tightness between the furnace door and the furnace chamber is improved by means of the sealing element, and leakage is avoided;

step 2, compacting the furnace door: the sealing between the furnace door and the furnace chamber is improved by means of the sealing piece, leakage is avoided, the positioning screw rod is clamped with the concave piece and rotated, the pressing piece is bonded with the concave piece to be tightly pressed, the furnace door is reinforced and locked, the stability in use is improved, and then atmosphere gas is transmitted into the furnace chamber through the input pipe to assist in heat treatment processing of products, so that the performance of the products is improved;

step 3, insulating the furnace chamber: through being provided with the heat preservation part, the metal heat preservation plate is correspondingly inserted into the reserved cavity, the top plate is reserved at the top end of the furnace body, the rock wool heat preservation layer and the glass wool heat preservation layer are correspondingly arranged on the inner wall and the outer wall of the metal heat preservation plate, under the mutual cooperation of the three parts, the heat in the furnace chamber can be blocked, a large amount of emission of the heat in the furnace chamber is avoided, the continuous and stable performance of heat treatment work is ensured, energy conservation and environmental protection are realized, the waste of resources is avoided, meanwhile, the subsequent maintenance is convenient, the metal heat preservation plate and the like can be taken out for maintenance and replacement by means of a handle, time and labor are saved, and under the assistance of a fixing part, the fixing screw is correspondingly rotated, the fixing screw is guided by means of the vertical plate, so that the top end of the fixing screw is correspondingly inserted into the fixing groove to realize the fixation of the top plate and the metal heat preservation plate, and the unexpected falling situation is avoided;

step 4, adjusting the processing position of the product: the adjustable moving part is arranged, the position of the crucible can be adjusted in a X, Y axial direction by means of the first linear module and the second linear module, the adjusting interval of the crucible is expanded, the full contact between atmosphere gas and products in the crucible is ensured, the heat treatment precision is improved, a worker can dynamically adjust and process in a furnace chamber according to actual processing requirements, the crucible is conveniently taken up and put down, when the crucible is fixed, the third linear module is correspondingly started, the clamping plates on the third linear module are linked to carry out follow-up movement, the clamping plates gather towards the center of the mounting table, the limiting of the crucible is realized by means of clamping and fixing the clamping plates, the phenomenon that the crucible is toppled in use is avoided, and the safety in the process is improved;

step 5, storing the atmosphere gas: through the arrangement of the storage component, the external atmosphere gas is communicated with the input pipe through the pipeline, and then the atmosphere gas is transferred into the gas storage tank for storage, the pressure in the gas storage tank can be visually observed by utilizing the barometer, the continuous supply of the atmosphere gas in the heat treatment process is ensured, the condition that the processing precision is influenced by the absence is avoided, and meanwhile, the atmosphere gas in the gas storage tank can be transferred into the furnace chamber for auxiliary processing by means of the air pump and the transfer pipe, so that the operation and the use are convenient, and the problem of sudden loss of the atmosphere gas in the processing is ensured;

step 6, taking out the product: the furnace door is opened, the crucible is taken out immediately, and the position of the crucible is synchronously moved outwards by means of the adjustable moving part in the taking and placing of the crucible, so that time and labor are saved, and the workload of taking and placing the crucible is reduced.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the adjustable moving part is arranged, the position of the crucible can be adjusted in a X, Y axial movement way by means of the first linear module and the second linear module, the adjusting interval of the crucible is expanded, the full contact between atmosphere gas and products in the crucible is ensured, the dynamic adjustment processing of workers in a furnace chamber is facilitated according to actual processing requirements, the crucible is conveniently taken up and put down, and when the crucible is fixed, the crucible is clamped and fixed by virtue of the clamping plate, so that the limitation of the crucible is realized, and the phenomenon that the crucible falls down in use is avoided;

2. according to the invention, the heat preservation part is arranged, the rock wool heat preservation layer and the glass wool heat preservation layer are correspondingly arranged on the inner wall and the outer wall of the metal heat preservation plate, under the mutual cooperation of the rock wool heat preservation layer, the glass wool heat preservation layer and the glass wool heat preservation layer, the heat in the furnace chamber can be blocked, a large amount of emission of the heat in the furnace chamber is avoided, the energy is saved, the environment is protected, the waste of resources is avoided, meanwhile, the subsequent maintenance is convenient, the metal heat preservation plate and the like can be taken out for maintenance and replacement by means of the handle, time and labor are saved, the fixing of the top plate and the metal heat preservation plate is realized under the assistance of the fixing part, and the unexpected falling-off condition is avoided;

3. according to the invention, the storage part is arranged, the atmosphere gas is transferred into the gas storage tank for storage, the pressure in the gas storage tank can be visually observed by using the barometer, the continuous supply of the atmosphere gas in the heat treatment process is ensured, the condition that the loss influences the processing precision is avoided, meanwhile, the atmosphere gas in the gas storage tank can be transferred into the furnace chamber by means of the air pump and the transfer pipe for auxiliary processing, the operation and the use are convenient, and the problem of sudden loss of the atmosphere gas in the processing is ensured.

Drawings

FIG. 1 is a front view of the whole of the present invention;

FIG. 2 is a schematic view of the structure of the furnace chamber of the present invention;

FIG. 3 is a schematic view of the installation of the adjustable moving part of the present invention in a furnace chamber;

FIG. 4 is a schematic view of an adjustable moving part structure of the present invention;

FIG. 5 is a schematic view of the plugging of an oven door on an oven chamber according to the present invention;

FIG. 6 is a schematic view of the insulating part of the present invention removed from the furnace;

FIG. 7 is a schematic view of the installation of the storage unit of the present invention on a furnace body;

FIG. 8 is a schematic diagram of a storage component structure according to the present invention;

FIG. 9 is a schematic diagram of the distribution of the adjustable moving parts and oven door of the present invention.

In the figure: 1. a furnace body; 2. a furnace chamber; 3. a furnace door; 4. furnace bricks; 5. a concave sheet; 6. an air inlet pipe; 7. an exhaust pipe; 8. a seal; 9. a threaded sleeve; 10. positioning a screw; 11. tabletting; 12. a first straight line module; 13. a second straight line module; 14. a mounting table; 15. a crucible; 16. a third straight line module; 17. a clamping plate; 18. a top plate; 19. reserving a cavity; 20. a metal heat-insulating plate; 21. rock wool heat preservation; 22. a glass wool heat-insulating layer; 23. a handle; 24. a riser; 25. a fixed screw; 26. a fixed table; 27. a fixing groove; 28. a gas storage tank; 29. an air pressure gauge; 30. an input tube; 31. an output pipe; 32. an air pump; 33. a transfer tube.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Example 1

Referring to fig. 1, 2 and 5, the present invention provides a technical solution: the utility model provides an isothermal normalizing atmosphere protection stove that heat preservation effect is good, including furnace body 1, furnace chamber 2 and furnace gate 3, furnace chamber 2 indent is seted up in furnace body 1, it has furnace brick 4 to fill in furnace chamber 2, can carry out the shutoff to furnace chamber 2 with the help of furnace brick 4, furnace gate 3 passes through the connecting piece and rotates one side of installing on furnace body 1, at furnace gate 3 both sides top, the bottom symmetry is installed concave piece 5, and furnace gate 3 corresponds laminating and cover shutoff to furnace chamber 2 at furnace body 1 front end face, be equipped with intake pipe 6 in furnace body 1 one side and furnace chamber 2 intercommunication, install blast pipe 7 with furnace chamber 2 intercommunication in intake pipe 6 below, install adjustable moving part in furnace chamber 2, hide at furnace body 1 top and install heat preservation part, install storage part in furnace body 1 one side, install sealing member 8 around furnace chamber 2 front end face, and sealing member 8 corresponds laminating sealing contact with furnace gate 3, at sealing member 8 both sides top, bottom symmetry movable mounting has screw sleeve 9, install set screw 10 in screw 9 rotation, fix the afterbody 10 and press down piece 10 to press down the piece to the concave piece 5 to the compression of furnace gate 3.

As shown in fig. 3, fig. 4 and fig. 9, the adjustable moving part comprises a first linear module 12, a second linear module 13, an installation table 14 and four compressing parts, the first linear module 12 is installed in the middle of the inner bottom of the furnace chamber 2 in a hidden mode, the second linear module 13 is installed at the output end of the first linear module 12, the installation table 14 is installed at the output end of the second linear module 13, a crucible 15 is placed on the installation table 14, the four compressing parts are distributed on the periphery of the installation table 14 in a rectangular mode, the first linear module 12 and the second linear module 13 are arranged in a matched mode, the first linear module 12 and the second linear module 13 are in one-to-one correspondence with each other in the axial direction X, Y, the compressing parts comprise a third linear module 16 and a clamping plate 17, the third linear module 16 is distributed on the periphery of the installation table 14 in a rectangular mode, the tail of the third linear module 16 extends out of the installation table 14, the clamping plate 17 is installed at the output end of the third linear module 16, and the clamping plate 17 is attached to the side wall of the crucible 15 to be compressed.

As shown in fig. 6, the heat preservation component includes roof 18, reservation chamber 19, metal heated board 20, rock wool heat preservation 21, glass cotton heat preservation 22 and fixed part, reservation chamber 19 is the spill and offers on the inner top of furnace body 1, roof 18 laminating is installed on the furnace body 1 top, roof 18 upper surface installs handle 23, metal heated board 20 is integrative to be installed at roof 18 lower surface and extend to in the reservation chamber 19, rock wool heat preservation 21 laminating is installed at metal heated board 20 inner wall, glass cotton heat preservation 22 laminating is installed at metal heated board 20 outer wall, and rock wool heat preservation 21 corresponds with glass cotton heat preservation 22 and extend to in reservation chamber 19, the fixed part is installed on furnace body 1 one side top, the fixed part includes riser 24, fixing screw 25, fixed station 26 and fixed slot 27, riser 24 fixed mounting is on furnace body 1 top one side, fixed station 26 is installed on the upper surface of roof 18 and is close to one side of riser 24, fixed slot 27 is offered on one side of fixed station 26, fixing screw 25 passes riser 24 through the screw thread, and fixing screw 25 afterbody corresponds to alternate to fixed slot 27.

As shown in fig. 7 and 8, the storage part comprises a gas storage tank 28, a barometer 29, an input pipe 30, an output pipe 31, an air pump 32 and a transfer pipe 33, wherein the gas storage tank 28 is arranged on one side of the side wall of the furnace body 1 close to the air inlet pipe 6 through a bracket, the barometer 29 is arranged on the top of one side of the gas storage tank 28 in a communicating way, the input pipe 30 is arranged at the bottom end of one side of the gas storage tank 28 in a communicating way, the output pipe 31 is arranged on one side of the gas storage tank 28 far from the input pipe 30 in a communicating way, the air pump 32 is arranged on the side wall of the furnace body 1 through the bracket and is communicated with the output pipe 31, and the transfer pipe 33 is arranged between the output end of the air pump 32 and the air inlet pipe 6.

Example 2

The working method of the isothermal normalizing atmosphere protection furnace with good heat preservation effect comprises the following steps:

the method comprises the following steps:

step 1, feeding a product: the furnace door 3 is opened, a product is placed in the crucible 15 and then placed on the mounting table 14 for limiting, the furnace bricks 4 are pushed into the furnace chamber 2, and then the furnace door 3 is closed, so that the tightness between the furnace door 3 and the furnace chamber 2 is improved by the sealing element 8, and leakage is avoided;

step 2, compacting the furnace door 3: the sealing performance between the furnace door 3 and the furnace chamber 2 is improved by means of the sealing piece 8, leakage is avoided, meanwhile, the positioning screw rod 10 is clamped with the concave piece 5 and rotated, the pressing piece 11 is bonded with the concave piece 5 to tightly press the furnace door 3, the stability in use is improved, and then atmosphere gas is transmitted into the furnace chamber 2 through the input pipe 30 to carry out auxiliary heat treatment processing on products, so that the performance of the products is improved;

step 3, insulating the furnace chamber 2: through being provided with heat preservation components, the metal heat preservation plate 20 is correspondingly inserted into the reserved cavity 19, the top plate 18 is reserved at the top end of the furnace body 1, the rock wool heat preservation layer 21 and the glass wool heat preservation layer 22 are correspondingly arranged on the inner wall and the outer wall of the metal heat preservation plate 20, under the mutual cooperation of the three, heat in the furnace chamber 2 can be blocked, a large amount of heat is prevented from being emitted, the continuous and stable heat treatment operation is ensured, the energy is saved, the environment is protected, the resource waste is avoided, meanwhile, the subsequent maintenance is convenient, the metal heat preservation plate 20 and the like can be taken out, maintained and replaced by means of the handle 23, time and labor are saved, the fixing screw 25 is correspondingly rotated under the assistance of the fixing part, the fixing screw 25 is guided by means of the vertical plate 24, the top end of the fixing screw 25 is correspondingly inserted into the fixing groove 27, and the fixing of the top plate 18 and the metal heat preservation plate 20 are realized, and the unexpected falling situation is avoided;

step 4, adjusting the processing position of the product: through being provided with the adjustable moving part, the position of the crucible 15 can be adjusted in a X, Y axial movement way by means of the first linear module 12 and the second linear module 13, the adjusting interval of the crucible 15 is expanded, the sufficient contact between atmosphere gas and products in the crucible 15 is ensured, the heat treatment precision is improved, the dynamic adjustment processing is conveniently carried out in the furnace chamber 2 by staff aiming at actual processing demands, the crucible 15 is conveniently taken up and put up, the third linear module 16 is correspondingly started when the crucible 15 is fixed, the clamping plate 17 on the third linear module is linked to carry out follow-up movement, the clamping plate 17 is gathered towards the center of the mounting table 14, the limiting of the crucible 15 is realized by means of clamping and fixing the crucible 15, the phenomenon that the crucible 15 falls down in use is avoided, and the safety in processing is improved;

step 5, storing the atmosphere gas: through the arrangement of the storage component, the external atmosphere gas is communicated with the input pipe 30 through the pipeline, and then the atmosphere gas is transferred into the gas storage tank 28 for storage, the pressure in the gas storage tank 28 can be visually observed by the barometer 29, the continuous supply of the atmosphere gas in the heat treatment process is ensured, the condition that the processing precision is influenced by the lack is avoided, meanwhile, the atmosphere gas in the gas storage tank 28 can be transferred into the furnace chamber 2 for auxiliary processing by the air pump 32 and the transfer pipe 33, the operation and the use are convenient, and the problem of sudden lack of the atmosphere gas in the processing is ensured;

step 6, taking out the product: the furnace door 3 is opened, the crucible 15 is taken out immediately, and the position of the crucible 15 is synchronously moved outwards by means of the adjustable moving part in the taking and placing of the crucible 15, so that time and labor are saved, and the workload of taking and placing the crucible 15 is reduced.

The invention relates to an isothermal normalizing atmosphere protection furnace with good heat preservation effect and a working method thereof, wherein the parts comprise universal standard parts or parts known by a person skilled in the art, the structure and the principle of the isothermal normalizing atmosphere protection furnace are all known by the person skilled in the art through technical manuals or by a routine experiment method, all electric devices in the isothermal normalizing atmosphere protection furnace are connected through wires by referring to power elements, electric devices and an adaptive monitoring computer and a power supply at the idle position of the isothermal normalizing atmosphere protection furnace, and the specific connection means refers to the working principle that the electric connection is completed among the electric devices in sequence.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an isothermal normalizing atmosphere protection stove that heat preservation effect is good, includes furnace body (1), stove chamber (2) and furnace gate (3), its characterized in that: furnace room (2) indent is offered in furnace body (1), has filled brickwork (4) in furnace room (2), can carry out shutoff to furnace room (2) with the help of brickwork (4), furnace gate (3) are installed on one side on furnace body (1) through the connecting piece rotation, are installed concave piece (5) in furnace gate (3) both sides top, bottom symmetry, and furnace gate (3) correspond the laminating and cover shutoff at furnace body (1) front end face to furnace room (2), install intake pipe (6) in furnace body (1) one side and furnace room (2) in-connection, install blast pipe (7) with furnace room (2) in-connection in intake pipe (6) below, install adjustable moving part in furnace room (2), hide at furnace body (1) top and install heat preservation part, install storage part in furnace body (1) one side.

2. The isothermal normalizing atmosphere protective furnace with good heat preservation effect according to claim 1, wherein: sealing elements (8) are arranged around the front end face of the furnace chamber (2), and the sealing elements (8) are correspondingly attached to the furnace door (3) in a sealing contact manner.

3. The isothermal normalizing atmosphere protective furnace with good heat preservation effect according to claim 2, wherein: the top end and the bottom end of two sides of the sealing piece (8) are symmetrically and movably provided with threaded sleeves (9), positioning screws (10) are rotatably arranged in the threaded sleeves (9), pressing pieces (11) are fixedly arranged at the tail parts of the positioning screws (10), and the positioning screws (10) are correspondingly clamped into the concave pieces (5) to press the furnace door (3).

4. The isothermal normalizing atmosphere protective furnace with good heat preservation effect according to claim 1, wherein: the adjustable moving part comprises a first linear module (12), a second linear module (13), an installation table (14) and four pressing parts, wherein the first linear module (12) is installed in the middle of the inner bottom of a furnace chamber (2) in a hidden mode, the second linear module (13) is installed at the output end of the first linear module (12), the installation table (14) is installed at the output end of the second linear module (13), a crucible (15) is placed on the installation table (14), and the four pressing parts are distributed on the periphery of the installation table (14) in a rectangular mode.

5. The isothermal normalizing atmosphere protective furnace with good heat preservation effect according to claim 4, wherein: the first linear module (12) and the second linear module (13) are arranged in a matched mode, and the output directions of the first linear module (12) and the second linear module (13) are in one-to-one correspondence with the axial directions of X, Y.

6. The isothermal normalizing atmosphere protective furnace with good heat preservation effect according to claim 4, wherein: the compressing part comprises a third linear module (16) and a clamping plate (17), the third linear module (16) is rectangular and distributed on the periphery of the mounting table (14), the tail of the third linear module (16) extends out of the mounting table (14), the clamping plate (17) is arranged at the output end of the third linear module (16), and the clamping plate (17) is attached to the side wall of the crucible (15) to compress.

7. The isothermal normalizing atmosphere protective furnace with good heat preservation effect according to claim 1, wherein: the heat preservation part includes roof (18), reservation chamber (19), metal heated board (20), rock wool heat preservation (21), glass wool heat preservation (22) and fixed part, reservation chamber (19) are the spill and offer in furnace body (1) top, roof (18) laminating is installed on furnace body (1) top, surface mounting has handle (23) on roof (18), metal heated board (20) integral mounting is at roof (18) lower surface and extend to reservation intracavity (19), rock wool heat preservation (21) laminating is installed at metal heated board (20) inner wall, glass wool heat preservation (22) laminating is installed at metal heated board (20) outer wall, and rock wool heat preservation (21) and glass wool heat preservation (22) correspond to extend to in reservation chamber (19), fixed part installs on furnace body (1) one side top.

8. The isothermal normalizing atmosphere protective furnace with good heat preservation effect according to claim 7, wherein: the fixed part comprises a vertical plate (24), a fixing screw (25), a fixing table (26) and a fixing groove (27), wherein the vertical plate (24) is fixedly arranged on one side of the top end of the furnace body (1), the fixing table (26) is arranged on one side, close to the vertical plate (24), of the upper surface of the top plate (18), the fixing groove (27) is formed in one side of the fixing table (26), the fixing screw (25) passes through the vertical plate (24) through threaded rotation, and the tail part of the fixing screw (25) correspondingly penetrates into the fixing groove (27).

9. The isothermal normalizing atmosphere protective furnace with good heat preservation effect according to claim 1, wherein: the air storage device comprises a storage part, wherein the storage part comprises an air storage tank (28), an air pressure gauge (29), an input pipe (30), an output pipe (31), an air pump (32) and a transfer pipe (33), the air storage tank (28) is installed on one side of a side wall of a furnace body (1) through a bracket, the air pressure gauge (29) is installed at the top of one side of the air storage tank (28) in a communicating manner, the input pipe (30) is installed at the bottom of one side of the air storage tank (28) in a communicating manner, the output pipe (31) is installed on one side of the air storage tank (28) away from the input pipe (30), the air pump (32) is installed on the side wall of the furnace body (1) through the bracket and is communicated with the output pipe (31), and the transfer pipe (33) is installed between the output end of the air pump (32) and the air inlet pipe (6).

10. The working method of the isothermal normalizing atmosphere protective furnace with good heat preservation effect according to claims 1-9 is characterized by comprising the following steps: the method comprises the following steps:

step 1, feeding a product: the furnace door (3) is opened, a product is placed in the crucible (15) and then placed on the mounting table (14) for limiting, the furnace brick (4) is pushed into the furnace chamber (2), then the furnace door (3) is closed, and the sealing performance between the furnace door (3) and the furnace chamber (2) is improved by the sealing piece (8), so that leakage is avoided;

step 2, compacting the furnace door (3): the sealing between the furnace door (3) and the furnace chamber (2) is improved by means of the sealing piece (8), leakage is avoided, meanwhile, the positioning screw (10) is clamped with the concave piece (5) and rotated, the pressing piece (11) is attached to the concave piece (5) to be tightly pressed, the furnace door (3) is reinforced and locked, the stability in use is improved, and then atmosphere gas is transmitted into the furnace chamber (2) through the input pipe (30) to assist in heat treatment processing of products, so that the performance of the products is improved;

step 3, insulating the furnace chamber (2): through being provided with heat preservation parts, the metal heat preservation plate (20) is correspondingly inserted into the reserved cavity (19), the top plate (18) is reserved at the top end of the furnace body (1), and the rock wool heat preservation layer (21) and the glass wool heat preservation layer (22) are correspondingly arranged on the inner wall and the outer wall of the metal heat preservation plate (20), under the mutual cooperation of the three parts, the heat in the furnace chamber (2) can be blocked, a large amount of heat emission is avoided, the continuous stable performance of heat treatment work is ensured, energy conservation and environmental protection are realized, the waste of resources is avoided, meanwhile, the subsequent maintenance is convenient, the metal heat preservation plate (20) and the like can be taken out for maintenance and replacement by means of a handle (23), time and labor are saved, and under the assistance of a fixing part, the fixing screw (25) is correspondingly rotated, the fixing screw (25) is guided by means of a vertical plate (24), so that the top end of the fixing screw (25) is correspondingly inserted into a fixing groove (27) to realize fixation, and the fixation of the top plate (18) and the metal heat preservation plate (20) are prevented from unexpected falling off;

step 4, adjusting the processing position of the product: through being equipped with adjustable moving parts, can carry out X, Y axial removal regulation to the position of crucible (15) with the help of No. one straight line module (12), no. two straight line modules (13), the regulation interval of crucible (15) has been expanded, the abundant contact of atmosphere gas and the interior product of crucible (15) has been guaranteed, the heat treatment precision has been promoted, make things convenient for the staff to carry out dynamic adjustment processing in furnace chamber (2) to actual processing demand, and conveniently get crucible (15) from top to bottom, when fixed crucible (15), corresponding start No. three straight line modules (16), the movement that follows of splint (17) on the linkage, make splint (17) gather up towards mount table (14) center department, the centre gripping fixed to crucible (15) has realized spacing to it with the help of splint (17), avoid crucible (15) to appear the condition of toppling in use, the security in the processing has been promoted;

step 5, storing the atmosphere gas: through the arrangement of the storage component, the external atmosphere gas is communicated with the input pipe (30) through the pipeline, the atmosphere gas is transferred to the gas storage tank (28) for storage immediately, the pressure in the gas storage tank (28) can be visually observed by the barometer (29), the continuous supply of the atmosphere gas in the heat treatment process is ensured, the condition that the defect influences the processing precision is avoided, and meanwhile, the atmosphere gas in the gas storage tank (28) can be transferred to the furnace chamber (2) for auxiliary processing by the air pump (32) and the transfer pipe (33), so that the operation and the use are convenient, and the problem of sudden loss of the atmosphere gas in the processing is ensured;

step 6, taking out the product: the furnace door (3) is opened, the crucible (15) is taken out immediately, and the position of the crucible (15) is synchronously moved outwards by means of the adjustable moving part in the taking and placing of the crucible (15), so that time and labor are saved, and the workload of taking and placing the crucible (15) is reduced.