CN215490989U

CN215490989U - Novel sintering furnace

Info

Publication number: CN215490989U
Application number: CN202121176023.XU
Authority: CN
Inventors: 李晨露; 李秉财
Original assignee: Jiangsu Jinshangyuan New Material Technology Co ltd
Current assignee: Jiangsu Jinshangyuan New Material Technology Co ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2022-01-11
Anticipated expiration: 2031-05-28

Abstract

The utility model discloses a novel sintering furnace, which comprises a support, wherein the support is used for supporting an outer barrel, a rotating barrel is arranged in the outer barrel, the rotating barrel is driven to rotate by a driving mechanism, two ends of the rotating barrel are fixedly connected with a shaft A and a shaft B, the centers of the shaft A and the shaft B are on the same straight line, the shaft A and the shaft B penetrate through a cooling pool for cooling, the shaft A and the shaft B are both supported by a supporting structure, the supporting structure comprises bearings which are distributed in a triangular shape, the shaft A and the shaft B penetrate through the middle of the formed triangular shape in a matched mode, and the supporting structure is fixed on the support. Through setting up the actuating mechanism of outer bucket and rotary barrel for the homogeneity of being heated is better, and the bearing structure and the cooling pond of synchronous design, bearing structure's design has changed the full support of single bearing frame into the line that three bearing encloses to close and is supported, reduces the heat transfer, makes equipment can avoid outer bucket to the influence of the in-process heat transfer that the rotary barrel heated to the working part at the operation in-process, prolongs the life of stove.

Description

Novel sintering furnace

Technical Field

The utility model relates to the field of structural design of sintering furnaces, in particular to a novel sintering furnace.

Background

The vacuum sintering furnace is an advanced heat treatment device, and can be used for carrying out various heat treatments of metal materials and workpieces, such as vacuum heating, quenching, tempering, annealing, carburizing, nitriding, pressurized gas quenching and the like, wherein the vacuum heat treatment process can obviously improve the performance of the treated materials and workpieces, and the materials are fully utilized.

The carbon fiber has good high-temperature performance, and can still maintain excellent mechanical properties at 2000 ℃ in an inert environment. The raw materials can be sintered in the production process of the carbon fibers to prepare the carbon fibers, the structural design of a sintering furnace determines the quality of a sintered product, the heating barrel structure of the existing vacuum sintering furnace in the market at present is fixed, the vacuum sintering furnace is often heated unevenly in the use process to cause poor sintering effect and influence the performance of the sintered product, meanwhile, in the carbon fiber production industry, some gases can be generated in a furnace chamber in the production process of the carbon fiber sintering furnace, and the quality of the sintered product can be influenced if the gases are not discharged in time; based on the two problems, a great deal of research and development is carried out by technical personnel in the field, and meanwhile, in the research and development process, the long-time high-temperature sintering has great damage to sintering furnace equipment and influences the service life of the sintering furnace. To this end, we propose a new sintering furnace.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a novel sintering furnace, which can effectively solve the problems in the background technology by improving the heating mode and simultaneously considering the service life of the operation part in the heating process.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the utility model provides a novel sintering furnace, includes the support, the support is used for supporting outer bucket, be equipped with the rotary barrel in the outer bucket, the rotary barrel is rotated by the actuating mechanism drive, rotary barrel both ends fixed connection center is at axle A and axle B on a straight line, axle A and axle B pass cooling tank cooling, and axle A and axle B all support through bearing structure, bearing structure is including the bearing that is triangular distribution, axle A and axle B pass from the cooperation of the triangle middle part that constitutes, bearing structure fixes on the support.

Further, the outer barrel and the rotary barrel are both horizontal cylindrical.

Further, the outer tub comprises an upper casing and a lower casing, and the upper casing and the lower casing are detachably connected.

Further, the outer barrel is sequentially provided with a ceramic heating sheet, a metal layer B, a heat insulation layer and a metal layer C from inside to outside.

Further, the inner wall and the outer wall of the rotary barrel are respectively a metal layer A and a metal layer D.

Furthermore, the metal layer A, the metal layer B and the metal layer D are all high-temperature-resistant 310S stainless steel, the metal layer C is a galvanized plate, and the heat-insulating layer is aluminum silicate pre-oxidized silk felt.

Furthermore, a hollow part is arranged in the middle of the rotary barrel, an end cover A and an end cover B are arranged at two ends of the hollow part, air inlets are formed in the end cover A and the end cover B and communicated with the hollow part, the end cover A is used for being fixedly connected with the shaft A, the end cover B is used for being fixedly connected with the shaft B, and the air inlets are formed in the outer sides of the shaft A and the shaft B.

Furthermore, an air outlet pipeline is arranged in the shaft A, an air inlet pipeline is arranged in the shaft B, the tail end of the air inlet pipeline is communicated into the rotary barrel through a branch pipeline, and the air outlet pipeline is also communicated with the interior of the rotary barrel.

Furthermore, the shaft A transmission shaft is provided with a first gear, the driving mechanism comprises a motor, and the first gear is used for being in meshing transmission with a second gear of the motor.

Compared with the prior art, the utility model has the following beneficial effects:

the heating uniformity is better by arranging an outer barrel, a rotary barrel and a driving mechanism of the rotary barrel, a supporting structure and a cooling pool are synchronously designed, the full support of a single bearing seat is changed into a line support formed by enclosing three bearings by the design of the supporting structure, the heat transfer is reduced, the influence of the heat transfer of the outer barrel on working parts in the process of heating the rotary barrel can be avoided in the operation process of the equipment, and the service life of the furnace is prolonged;

the rotary barrel is arranged, the hollow part is arranged in the rotary barrel, the end cover A and the end cover B are respectively arranged at two ends of the hollow part, and the air inlet hole is formed in the outer side of the shaft when the end cover A and the end cover B are used for fixing the shaft and used for conveying heat to the hollow part, so that the material can be heated inside and outside, the heating is more uniform, the heating effect is better compared with that of a single rotating material, and meanwhile, the material saving mode is provided by the fixing mode design of the end cover A and the end cover B, and the whole design is more reasonable;

third, be equipped with the pipeline of giving vent to anger in the transmission shaft, be equipped with the admission line in the driven shaft, the admission line end communicates to the rotary barrel in through the lateral conduit, the pipeline of giving vent to anger also with the rotary barrel in the intercommunication, provide nitrogen gas transfer passage, be convenient for in time with the gas that produces in the rotary barrel in time discharge, avoid producing the influence to product quality.

Drawings

FIG. 1 is a schematic view of the overall structure of a sintering furnace according to the present invention;

FIG. 2 is a side view of a sintering furnace support structure of the present invention;

FIG. 3 is a cross-sectional view of a sintering furnace according to the present invention;

FIG. 4 is a side view of a sintering furnace rotating barrel according to the present invention;

fig. 5-7 show three fixing modes of an end cover A and an end cover B of the sintering furnace.

1. A support; 2. an outer tub; 3. rotating the barrel; 4. a cooling pool; 5. a bearing; 6. an air inlet; 7. a ceramic heating plate; 8. a metal layer B; 9. a heat-insulating layer; 10. a metal layer C; 11. a metal layer A; 12. an air outlet pipe; 13. an air intake duct; 14. an end cap A; 15. an end cap B; 16. A rotary joint; 17. a branch pipe; 18. a metal layer D; 19. an axis A; 20. a shaft B; 21. An upper housing; 22. a lower housing; 23. a hollow part; 24. an electric motor.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

As shown in fig. 1-4, a novel sintering furnace comprises a support 1, the support 1 is used for supporting an outer barrel 2, a rotary barrel 3 is arranged in the outer barrel 2, the outer barrel 2 and the rotary barrel 3 are both horizontal cylindrical, the outer barrel 2 is sequentially provided with a ceramic heating sheet 7, a metal layer B8, a heat insulation layer 9 and a metal layer C10 from inside to outside, the inner wall and the outer wall of the rotary barrel 3 are respectively a metal layer A11 and a metal layer D18, the metal layer A11, the metal layer B8 and the metal layer D18 are all high temperature resistant 310S stainless steel, the metal layer C10 is a galvanized plate, the heat insulation layer 9 is aluminum silicate pre-oxidized fiber felt, the outer barrel 2 comprises an upper shell 21 and a lower shell 22, the upper shell 21 and the lower shell 22 are detachably connected, the rotary barrel 3 is driven to rotate by a driving mechanism, the shaft A19 is a transmission shaft, the transmission shaft is provided with a first gear, the driving mechanism comprises a motor 24, the first gear is used for being engaged with a second gear of the motor 24, two ends of the rotary barrel 3 are fixedly connected with a shaft A19 and a shaft B20, the shaft A19 and the shaft B20 are cooled through the cooling bath 4, the cooling bath 4 is arranged so as not to affect the working of the working components, the large part can be arranged in the cooling pool 4, the cooling pool 4 adopts a water cooling mode, water adopts a flow circulation mode, the shaft A19 and the shaft B20 are partially used for water cooling, the influence of high temperature in a rotating barrel on the shaft is avoided, the service life is prolonged, the shaft A19 and the shaft B20 are both supported by a supporting structure, the supporting structure comprises bearings 5 which are distributed in a triangular shape, the fixing of the bearings 5 adopts the prior art, as long as the limiting is realized, the shaft A19 and the shaft B20 are matched and penetrate through the middle parts of the formed triangular shape, the structural design breaks through the support that a single bearing seat is used as a shaft, the support of the shaft A19 and the shaft B20 is realized by the relative rotation of three bearings, the complete heating of the single bearing seat is avoided, the heating is changed into point contact, the service life of the equipment is prolonged, and the support structure is fixed on the support 1;

the middle of the rotary barrel 3 is provided with a hollow part 23, the hollow part 23 is also in a horizontal cylindrical shape, two ends of the hollow part 23 are fixedly provided with an end cover A14 and an end cover B15, the diameters of the end cover A14 and the end cover B15 are larger than that of the hollow part 23, the end cover A14 and the end cover B1 are both provided with a plurality of air inlet holes 6, heat can conveniently enter the hollow part 23, the air inlet holes 6 are communicated with the hollow part 23 to realize the heating of the inside and the outside of materials, the middle part of the end cover A14 is fixedly connected with a shaft A19, the middle part of the end cover B15 is fixedly connected with a shaft B20, and the air inlet holes 6 are arranged at the outer sides of the shaft A19 and the shaft B20 so as not to influence the heat entering the hollow part 23;

there are three ways of securing end cap a14 and end cap B15:

firstly, the end cover A14 and the end cover B15 are fixed by a nut lock after passing through the rotary barrel 3 by four long screws, see figure 5;

secondly, four supporting blocks are arranged on the inner sides of two ends of the hollow part 23, and then the end cover A14 and the end cover B15 are locked by four screws, which is shown in figure 6;

thirdly, four supporting blocks are arranged on the outer sides of two ends of the hollow part 23, and then the end cover A14 and the end cover B15 are locked by four screws, which is shown in fig. 7;

compared with the first mode, the last two modes save more materials for the long screw and are more convenient to process;

an air outlet pipeline 12 is arranged in the shaft A19, an air inlet pipeline 13 is arranged in the shaft B20, the tail end of the air inlet pipeline 13 is communicated into the rotary barrel 3 through a branch pipeline 17, the air outlet pipeline 12 is also communicated with the interior of the rotary barrel 3, an air outlet is arranged on the rotary barrel 3, and the air outlet is communicated with the air outlet pipeline 12 through a pipeline;

the branch pipelines 17 are at least more than 2 and are connected to the rotary barrel 3 and distributed equidistantly, the number of the branch pipelines 17 is 4 in the embodiment, the specific communication mode is that the gas inlet pipeline 13 is communicated with a nitrogen supply bottle through a rotary joint 16, nitrogen enters from the gas inlet pipeline 13 and then enters the rotary barrel 3 through the branch pipelines 17, so that gas generated in the rotary barrel 3 is extruded and discharged from the gas outlet pipeline 12, the nitrogen enters into the rotary barrel 3 more uniformly, and finally generated impurity gas is discharged from the gas outlet pipeline 12;

it should be noted that, according to the working principle of the novel sintering furnace, materials are added from the charging opening of the rotary barrel 3, the charging opening is sealed after the materials are added, then the upper shell 21 of the outer barrel 2 is hung to be matched with the lower shell 22 of the outer barrel 2 by a crane, then the upper shell 21 and the lower shell 22 are fixed by screws and nuts, the ceramic heating sheet 5 is heated after the upper shell is fixed, and meanwhile, a motor 24 switch for driving the rotary barrel 3 to rotate is started, so that the rotary barrel 3 rotates, a support structure consisting of three bearings supports a shaft A19 and a shaft B20 to rotate during the rotation process, and a gas cylinder switch of a nitrogen gas cylinder is synchronously opened, heat can enter the hollow part 23 in the rotary barrel 3 from the gas inlet 6 during the process, the inside and the outside of the materials are heated, and the materials are heated more uniformly compared with the simple rotary barrel; after passing through the gas inlet pipeline 13, nitrogen can enter the rotary barrel 3 along the four branch pipelines 17 and drives the generated gas to be discharged out of the rotary barrel 3 from the gas outlet pipeline 12, so that the participation in the material reaction in the rotary barrel 3 is reduced as much as possible, and the product quality is ensured; the water in the cooling pond 4 cools the shaft A19 and the shaft B20 in the operation process, and the whole device has reasonable structural design.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A novel sintering furnace comprises a support (1), and is characterized in that: support (1) is used for supporting outer bucket (2), be equipped with rotary barrel (3) in outer bucket (2), rotary barrel (3) are rotated by the actuating mechanism drive, rotary barrel (3) both ends fixed connection center axle A (19) and axle B (20) on a straight line, axle A (19) and axle B (20) are passed cooling pond (4) and are cooled off, and axle A (19) and axle B (20) all support through bearing structure, bearing structure is including bearing (5) that are triangular distribution, axle A (19) and axle B (20) are passed from the cooperation of the triangle middle part that constitutes, bearing structure fixes on support (1).

2. The new sintering furnace according to claim 1, characterized in that: the outer barrel (2) and the rotary barrel (3) are both horizontal cylindrical.

3. Sintering furnace according to claim 2, characterized in that: the outer barrel (2) comprises an upper shell (21) and a lower shell (22), and the upper shell (21) and the lower shell (22) are detachably connected.

4. A sintering furnace according to claim 3, characterized in that: the outer barrel (2) is sequentially provided with a ceramic heating sheet (7), a metal layer B (8), a heat preservation layer (9) and a metal layer C (10) from inside to outside.

5. Sintering furnace according to claim 4, characterized in that: the inner wall and the outer wall of the rotary barrel (3) are respectively a metal layer A (11) and a metal layer D (18).

6. Sintering furnace according to claim 5, characterized in that: the metal layer A (11), the metal layer B (8) and the metal layer D (18) are all high-temperature-resistant 310S stainless steel, the metal layer C (10) is a galvanized plate, and the heat-insulating layer (9) is an aluminum silicate pre-oxidized silk felt.

7. The new sintering furnace according to claim 6, characterized in that: the improved rotary drum is characterized in that a hollow part (23) is arranged in the middle of the rotary drum (3), end covers A (14) and B (15) are arranged at two ends of the hollow part, air inlets (6) are formed in the end covers A (14) and B (15), the air inlets (6) are communicated with the hollow part (23), the end covers A (14) are fixedly connected with a shaft A (19), the end covers B (15) are fixedly connected with a shaft B (20), and the air inlets (6) are formed in the outer sides of the shaft A (19) and the shaft B (20).

8. A new sintering furnace according to any of the claims 1-7, characterized in that: an air outlet pipeline (12) is arranged in the shaft A (19), an air inlet pipeline (13) is arranged in the shaft B (20), the tail end of the air inlet pipeline (13) is communicated into the rotary barrel (3) through a branch pipeline (17), and the air outlet pipeline (12) is also communicated with the interior of the rotary barrel (3).

9. The new sintering furnace according to claim 8, characterized in that: the shaft A (19) is a transmission shaft, a first gear is arranged on the transmission shaft, the driving mechanism comprises a motor (24), and the first gear is used for being in meshing transmission with a second gear of the motor (24).