CN212902570U

CN212902570U - Vacuum atmosphere furnace

Info

Publication number: CN212902570U
Application number: CN202021837081.8U
Authority: CN
Inventors: 吴建国; 朱自强; 吴新
Original assignee: Yixing Bangshida Furnace Co ltd
Current assignee: Yixing Bangshida Furnace Co ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-04-06
Anticipated expiration: 2030-08-28

Abstract

The utility model discloses a vacuum atmosphere furnace relates to vacuum atmosphere furnace technical field, for solving current vacuum atmosphere furnace, because its cooling rate is slower, causes the problem of the efficiency decline of finished product production. The upper end of electric cabinet is provided with the vacuum atmosphere case, the upper end of vacuum atmosphere case is provided with the cooling bin, the lower extreme four corners of electric cabinet all is provided with the supporting legs, the front end of electric cabinet is provided with automatically controlled monitoring panel, front end one side of vacuum atmosphere case is provided with the sealing door pivot, the front end of vacuum atmosphere case is provided with the sealing door, the four sides of sealing door all are provided with the sealed screw rod of pivot, the sealed screw rod of pivot and sealing door threaded connection.

Description

Vacuum atmosphere furnace

Technical Field

The utility model relates to a vacuum atmosphere stove technical field specifically is a vacuum atmosphere stove.

Background

Vacuum atmosphere furnaces, also known as oxygen-free annealing furnaces, vacuum atmosphere sintering furnaces and the like, are methods for sintering objects in a hearth into which certain gas is introduced. Different materials are sintered in proper atmosphere, which is beneficial to the sintering process, improves the densification degree of the product and obtains the product with good performance. For example, a transparent alumina ceramic may be sintered in a hydrogen atmosphere, a transparent ferroelectric ceramic may be sintered in an oxygen atmosphere, and a nitride ceramic such as aluminum nitride may be sintered in a nitrogen atmosphere. Sometimes the sintering protocol must also be operated in a protective atmosphere for protection. The vacuum atmosphere furnace is a novel heat treatment technology combining a vacuum technology and a heat treatment technology, the vacuum environment of the vacuum heat treatment refers to an atmosphere environment lower than one atmosphere pressure, and comprises low vacuum, medium vacuum, high vacuum and ultrahigh vacuum, and the vacuum heat treatment actually belongs to atmosphere control heat treatment. The vacuum heat treatment refers to that all or part of the heat treatment process is carried out in a vacuum state, and the vacuum heat treatment can realize almost all heat treatment processes involved in the conventional heat treatment, but the heat treatment quality is greatly improved.

However, the existing vacuum atmosphere furnace has the problem that the efficiency of finished product production is reduced because the cooling speed is slow; therefore, the existing requirements are not satisfied, and a vacuum atmosphere furnace is proposed for the requirements.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a vacuum atmosphere stove to solve the current vacuum atmosphere stove that proposes among the above-mentioned background art, because its cooling rate is slower, cause the problem that the efficiency of finished product production descends.

In order to achieve the above object, the utility model provides a following technical scheme: a vacuum atmosphere furnace comprises an electric cabinet, wherein a vacuum atmosphere box is arranged at the upper end of the electric cabinet and is connected with the electric cabinet in a welding manner, a cooling bin is arranged at the upper end of the vacuum atmosphere box and is connected with the vacuum atmosphere box in a welding manner, supporting legs are arranged at four corners of the lower end of the electric cabinet and are connected with the electric cabinet in a welding manner, an electric control monitoring panel is arranged at the front end of the electric cabinet and is connected with the electric cabinet in a welding manner, a sealing door rotating shaft is arranged on one side of the front end of the vacuum atmosphere box and is connected with the rotating shaft of the vacuum atmosphere box, a sealing door is arranged at the front end of the vacuum atmosphere box, the upper end and the lower end of the sealing door are connected with the rotating shaft of the sealing door, rotating shaft sealing screw rods are arranged on four sides of the sealing door and are connected with the front end of the vacuum atmosphere box in a welding, the rotating shaft sealing screw rod is in threaded connection with the sealing door.

Preferably, the inside of vacuum atmosphere case is provided with thermal-insulated heat preservation, and thermal-insulated heat preservation and vacuum atmosphere incasement wall welded connection, the front end inner wall of thermal-insulated heat preservation is provided with high temperature resistant sealing rubber circle, and high temperature resistant sealing rubber circle and thermal-insulated heat preservation gluing are connected, the both sides of thermal-insulated heat preservation are provided with the vacuum extraction opening, and vacuum extraction opening and vacuum atmosphere incasement wall welded connection, every the one end of vacuum extraction opening all is provided with the dust screen, and dust screen and vacuum extraction opening welded connection, the inside lower extreme of thermal-insulated heat preservation is provided with the objective table, and objective table and thermal-insulated welded connection, the inside rear end inner wall of thermal-insulated heat preservation is provided with electric heating pipe, and electric heating pipe and thermal-insulated heat preservation welded connection.

Preferably, the cooling pipe and the exhaust pipe are respectively arranged on two sides of the interior of the cooling bin and are connected with the inner wall of the cooling bin through flanges.

Preferably, the rear end of the electric cabinet is provided with a support plate, the support plate is welded with the rear end of the electric cabinet, the upper end of the support plate is provided with a vacuum pump, the vacuum pump is connected with the support plate through a bolt, and the vacuum pump is connected with a vacuum pumping hole pipeline.

Preferably, the upper end of the supporting plate is provided with a scavenging pump, the scavenging pump is connected with the supporting plate through a bolt, the output end of the scavenging pump is provided with a scavenging air pipe, the scavenging air pipe is connected with the cooling pipe through a flange, the scavenging air pipe is provided with an electric control air valve, and the electric control air valve is connected with the scavenging air pipe through a flange.

Preferably, the rear end of blast pipe is provided with the cooler bin, and cooler bin and vacuum atmosphere case rear end welded connection, the inside of cooler bin is provided with the cooling plate, and cooling plate and cooler bin welded connection, and the cooling plate runs through the cooler bin inside and outside wall, the rear end of cooler bin is provided with the gas vent, and gas vent and cooler bin welded connection.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a setting of vacuum pump, open earlier sealing door and place the material on the objective table, close sealing door, after sealed, come to control device work through automatically controlled monitor panel, later the vacuum pump begins to take air out from vacuum air exhaust department, dust screen on the vacuum air exhaust mouth is used for preventing that the dust from getting into, electric heating pipe begins to add hot-water work for vacuum atmosphere incasement portion after taking air out, after heating process accomplishes, need cool down the processing to the device inner space, whole and the part of vacuum heat treatment technology go on under vacuum state, vacuum heat treatment can realize the heat treatment technology that almost all conventional heat treatment can relate to, but heat treatment quality improves greatly, the heating efficiency of device and the yields that improves the product have greatly been improved.

2. Through the arrangement of the cooling box, when the device needs to be rapidly cooled, the electric heating pipe stops heating, the scavenging pump starts to blast air into the device, external air is conveyed into the cooling pipe from the scavenging pump through the scavenging air pipe and is discharged, air with lower external temperature is filled in the heat insulation layer and takes away a large amount of heat and is discharged from the exhaust pipe, after hot air in the exhaust pipe enters the cooling box, the cooling plate in the cooling box is made of heat conduction copper sheets, most of heat is initially dissipated by the cooling plate, the hot air is shuttled along with an air channel formed by the cooling plate and is finally discharged from the exhaust port, the air channel formed by the cooling plate is bent and long, so that the hot air can be fully subjected to heat exchange with the cooling plate, the hot air discharged from the exhaust port is dissipated in advance, and the danger that the discharged hot air causes scalding to working personnel due to extremely high, the device greatly accelerates the temperature reduction speed in the device, and solves the problem that the efficiency of finished product production is reduced due to the fact that the cooling speed of the existing vacuum atmosphere furnace is low.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

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

fig. 3 is a schematic rear view of the present invention;

in the figure: 1. an electric cabinet; 2. a vacuum atmosphere box; 3. a cooling bin; 4. supporting legs; 5. an electric control monitoring panel; 6. a sealing door rotating shaft; 7. a sealing door; 8. a rotating shaft sealing screw rod; 9. a heat insulation layer; 10. a high-temperature resistant sealing rubber ring; 11. a vacuum pumping port; 12. a dust screen; 13. an object stage; 14. an electric heating tube; 15. a cooling tube; 16. an exhaust pipe; 17. a support plate; 18. a vacuum pump; 19. a scavenging pump; 20. ventilating the trachea; 21. an electric control air valve; 22. a cooling tank; 23. a cooling plate; 24. and (7) an exhaust port.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, the present invention provides an embodiment: a vacuum atmosphere furnace comprises an electric cabinet 1, wherein a vacuum atmosphere box 2 is arranged at the upper end of the electric cabinet 1, the vacuum atmosphere box 2 is connected with the electric cabinet 1 in a welding manner, a cooling bin 3 is arranged at the upper end of the vacuum atmosphere box 2, the cooling bin 3 is connected with the vacuum atmosphere box 2 in a welding manner, supporting legs 4 are arranged at four corners of the lower end of the electric cabinet 1, the supporting legs 4 are connected with the electric cabinet 1 in a welding manner, an electric control monitoring panel 5 is arranged at the front end of the electric cabinet 1, the electric control monitoring panel 5 is connected with the electric cabinet 1 in a welding manner, a sealing door rotating shaft 6 is arranged at one side of the front end of the vacuum atmosphere box 2, the sealing door rotating shaft 6 is connected with the vacuum atmosphere box 2 in a rotating manner, a sealing door 7 is arranged at the front end of the vacuum atmosphere box 2, the upper end and the lower end of the sealing door 7 are connected with the rotating shaft 6 in a rotating manner, rotating shaft sealing screw rods, the rotating shaft sealing screw 8 is in threaded connection with the sealing door 7.

Further, a heat insulation layer 9 is arranged inside the vacuum atmosphere box 2, the heat insulation layer 9 is connected with the inner wall of the vacuum atmosphere box 2 in a welding mode, a high temperature resistant sealing rubber ring 10 is arranged on the inner wall of the front end of the heat insulation layer 9, the high temperature resistant sealing rubber ring 10 is connected with the heat insulation layer 9 in an adhesive mode, vacuum pumping ports 11 are arranged on two sides of the heat insulation layer 9, the vacuum pumping ports 11 are connected with the inner wall of the vacuum atmosphere box 2 in a welding mode, a dust screen 12 is arranged at one end of each vacuum pumping port 11, the dust screen 12 is connected with the vacuum pumping ports 11 in a welding mode, an objective table 13 is arranged at the lower end inside the heat insulation layer 9, the objective table 13 is connected with the heat insulation layer 9 in a welding mode, an electric heating pipe 14 is arranged on the inner wall of the rear end inside the heat insulation layer 9, the electric heating pipe 14 is connected, the sealing door 7 is closed, after sealing is completed, the operation of the device is controlled through the electric control monitoring panel 5, then the vacuum pump 18 starts to pump air from the vacuum pumping hole 11, the dust screen 12 on the vacuum pumping hole 11 is used for preventing dust from entering, the electric heating pipe 14 starts to heat and process the interior of the vacuum atmosphere box 2 after air pumping, after the heating process is completed, the space in the device needs to be cooled, all and part of the vacuum heat treatment process is performed in a vacuum state, the vacuum heat treatment can realize almost all heat treatment processes which can be related to conventional heat treatment, but the heat treatment quality is greatly improved, the heating efficiency of the device is greatly improved, and the yield of products is improved.

Furthermore, a cooling pipe 15 and an exhaust pipe 16 are respectively arranged on two sides of the interior of the cooling bin 3, the cooling pipe 15 and the exhaust pipe 16 are both connected with the flange on the inner wall of the cooling bin 3, the cooling pipe 15 and the exhaust pipe 16 are respectively connected with a scavenging pump 19 and a cooling box 22, and the interior space is connected with the internal environment and the external environment in an air cooling circulating mode.

Further, the rear end of electric cabinet 1 is provided with backup pad 17, and backup pad 17 and electric cabinet 1 rear end welded connection, and the upper end of backup pad 17 is provided with vacuum pump 18, and vacuum pump 18 and backup pad 17 bolted connection, and

vacuum pump

18 and 11 pipe connections of vacuum extraction opening, vacuum pump 18 can take out the space air in thermal-insulated heat preservation 9 to improve the efficiency and the finished product effect of heating.

Further, the upper end of the supporting plate 17 is provided with a scavenging pump 19, the scavenging pump 19 is in bolted connection with the supporting plate 17, the output end of the scavenging pump 19 is provided with a ventilation air pipe 20, the ventilation air pipe 20 is in flange connection with the cooling pipe 15, the ventilation air pipe 20 is provided with an electric control air valve 21, the electric control air valve 21 is in flange connection with the ventilation air pipe 20, the scavenging pump 19 pumps external air into the device for quick cooling, and the electric control air valve 21 is used for controlling the communication of the internal environment and the external environment of the ventilation air pipe 20.

Furthermore, a cooling box 22 is arranged at the rear end of the exhaust pipe 16, the cooling box 22 is welded with the rear end of the vacuum atmosphere box 2, a cooling plate 23 is arranged in the cooling box 22, the cooling plate 23 is welded with the cooling box 22, the cooling plate 23 penetrates through the inner wall and the outer wall of the cooling box 22, the rear end of the cooling box 22 is provided with an exhaust port 24, the exhaust port 24 is welded with the cooling box 22, after the hot air in the exhaust pipe 16 enters the cooling box 22, the cooling plate 23 inside the cooling box 22 is made of a heat-conducting copper sheet, most of the heat is initially dissipated by the cooling plate 23, the hot air finally flows back and forth along the air channel formed by the cooling plate 23 and is exhausted from the air outlet 24, the air channel formed by the cooling plate 23 is bent and elongated, the hot air can fully exchange heat with the cooling plate 23, so that the hot air exhausted from the exhaust port 24 can be dissipated in advance, and the danger that the exhausted hot air causes scalding to workers due to extremely high temperature is prevented.

The working principle is as follows: when the device is used, the sealing door 7 is opened firstly to place materials on the objective table 13, the sealing door 7 is closed, after sealing is finished, the device is controlled to work through the electric control monitoring panel 5, then the vacuum pump 18 starts to pump air from the vacuum pumping hole 11, the dust screen 12 on the vacuum pumping hole 11 is used for preventing dust from entering, after the air is pumped out, the electric heating pipe 14 starts to heat and process the inside of the vacuum atmosphere box 2, after the heating process is finished, the space in the device needs to be cooled, all and part of the vacuum heat treatment process are carried out in a vacuum state, the vacuum heat treatment can realize almost all heat treatment processes related to conventional heat treatment, but the heat treatment quality is greatly improved, the heating efficiency of the device is greatly improved, the yield of products is improved, when the device needs to be rapidly cooled, the electric heating pipe 14 stops heating, the air exchange pump 19 starts to blow air into the device, external air is conveyed into the cooling pipe 15 from the air exchange pump 19 through the air exchange pipe 20 and is discharged, air with lower external temperature is filled in the heat insulation layer 9 and takes away a large amount of heat and is discharged from the exhaust pipe 16, after hot air in the exhaust pipe 16 enters the cooling box 22, the cooling plate 23 in the cooling box 22 is made of heat-conducting copper sheets, most of heat is initially dissipated by the cooling plate 23, the hot air is finally discharged from the exhaust port 24 along with the air channel formed by the cooling plate 23, the air channel formed by the cooling plate 23 is bent and extended, so that the hot air can fully exchange heat with the cooling plate 23, the hot air discharged from the exhaust port 24 is dissipated in advance, the danger that workers are scalded due to extremely high temperature of the discharged hot air is prevented, and the temperature reduction speed in the device is greatly accelerated, solves the problem that the cooling speed of the existing vacuum atmosphere furnace is slow, which causes the efficiency of finished product production to be reduced.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A vacuum atmosphere furnace comprises an electric cabinet (1), and is characterized in that: the vacuum atmosphere box is characterized in that a vacuum atmosphere box (2) is arranged at the upper end of the electric cabinet (1), the vacuum atmosphere box (2) is connected with the electric cabinet (1) in a welding mode, a cooling bin (3) is arranged at the upper end of the vacuum atmosphere box (2), the cooling bin (3) is connected with the vacuum atmosphere box (2) in a welding mode, supporting legs (4) are arranged at four corners of the lower end of the electric cabinet (1), the supporting legs (4) are connected with the electric cabinet (1) in a welding mode, an electric control monitoring panel (5) is arranged at the front end of the electric cabinet (1), the electric control monitoring panel (5) is connected with the electric cabinet (1) in a welding mode, a sealing door rotating shaft (6) is arranged on one side of the front end of the vacuum atmosphere box (2), the sealing door rotating shaft (6) is connected with the rotating shaft of the vacuum atmosphere box (2), a sealing door (7) is arranged at the front end of the vacuum atmosphere box (2), and the upper end and, four sides of the sealing door (7) are provided with rotating shaft sealing screw rods (8), the rotating shaft sealing screw rods (8) are connected with the front end of the vacuum atmosphere box (2) in a welding mode, and the rotating shaft sealing screw rods (8) are connected with the sealing door (7) in a threaded mode.

2. A vacuum atmosphere furnace as defined in claim 1, wherein: the vacuum box is characterized in that a heat insulation layer (9) is arranged inside the vacuum box (2), the heat insulation layer (9) is connected with the inner wall of the vacuum box (2) in a welded mode, a high-temperature-resistant sealing rubber ring (10) is arranged on the inner wall of the front end of the heat insulation layer (9), the high-temperature-resistant sealing rubber ring (10) is connected with the heat insulation layer (9) in an adhesive mode, vacuum pumping ports (11) are formed in two sides of the heat insulation layer (9), the vacuum pumping ports (11) are connected with the inner wall of the vacuum box (2) in a welded mode, a dust screen (12) is arranged at one end of each vacuum pumping port (11), the dust screen (12) is connected with the vacuum pumping ports (11) in a welded mode, an objective table (13) is arranged at the lower end of the inside of the heat insulation layer (9), the objective table (13) is connected with the heat insulation layer (9) in a welded mode, and, and the electric heating tube (14) is welded with the heat insulation layer (9).

3. A vacuum atmosphere furnace as defined in claim 1, wherein: and cooling pipes (15) and exhaust pipes (16) are respectively arranged on two sides of the interior of the cooling bin (3), and the cooling pipes (15) and the exhaust pipes (16) are connected with the inner wall of the cooling bin (3) through flanges.

4. A vacuum atmosphere furnace as defined in claim 1, wherein: the rear end of the electric cabinet (1) is provided with a supporting plate (17), the supporting plate (17) is connected with the rear end of the electric cabinet (1) in a welded mode, a vacuum pump (18) is arranged at the upper end of the supporting plate (17), the vacuum pump (18) is connected with the supporting plate (17) through bolts, and the vacuum pump (18) is connected with a vacuum pumping hole (11) through a pipeline.

5. A vacuum atmosphere furnace according to claim 4, wherein: the upper end of backup pad (17) is provided with scavenging pump (19), and scavenging pump (19) and backup pad (17) bolted connection, the output of scavenging pump (19) is provided with trachea (20) of taking a breath, and trachea (20) of taking a breath and cooling tube (15) flange joint, be provided with automatically controlled pneumatic valve (21) on trachea (20) of taking a breath, and automatically controlled pneumatic valve (21) and trachea (20) flange joint of taking a breath.

6. A vacuum atmosphere furnace as defined in claim 3, wherein: the rear end of blast pipe (16) is provided with cooler bin (22), and cooler bin (22) and vacuum atmosphere case (2) rear end welded connection, the inside of cooler bin (22) is provided with cooling plate (23), and cooling plate (23) and cooler bin (22) welded connection, and cooling plate (23) run through cooler bin (22) inside and outside wall, the rear end of cooler bin (22) is provided with gas vent (24), and gas vent (24) and cooler bin (22) welded connection.