CN214950648U

CN214950648U - Annealing furnace for producing carbon silicon rods

Info

Publication number: CN214950648U
Application number: CN202121525275.9U
Authority: CN
Inventors: 王勇; 王涛
Original assignee: Zibo Deruizi Heating Element Co ltd
Current assignee: Zibo Deruizi Heating Element Co ltd
Priority date: 2021-07-06
Filing date: 2021-07-06
Publication date: 2021-11-30
Anticipated expiration: 2031-07-06

Abstract

The utility model discloses an annealing stove of production carbon silicon rod, include: furnace body, gas circulation passageway, gas circulating pump and rack, wherein: the two ends of the gas circulation channel are communicated with the furnace chamber of the furnace body, and the gas circulation pump is arranged on the gas circulation channel to promote the circulation of the protective gas in the furnace chamber. The rack includes the fixed plate, by the support frame that montant and diagonal brace are constituteed, wherein: the fixing plate is horizontally fixed on the lower surface of the furnace chamber. The vertical rod is vertically fixed on the fixing plate, the inclined strut is fixed on the side wall of the vertical rod, and the inclined strut is obliquely arranged upwards relative to the vertical rod. The left side wall and the right side wall of the vertical rod are respectively provided with a row of inclined supporting rods distributed at intervals along the height direction of the vertical rod, and the supporting frames distributed at intervals are arranged along the length direction of the fixing plate. The utility model discloses a contact of carbon-point can effectively be avoided through optimizing and improving the furnace chamber inner structure of current carbon silicon rod annealing stove to this kind of annealing stove.

Description

Annealing furnace for producing carbon silicon rods

Technical Field

The utility model relates to a carbon silicon rod production facility field especially relates to the annealing stove of production carbon silicon rod.

Background

The silicon carbide rod electric heating element is prepared by adding industrial silicon, carbon powder and other materials into high-purity silicon carbide serving as a main raw material. After being formed and dried, the rod-shaped or tubular high-temperature electric heating element is prepared by high-temperature sintering. When the silicon carbide rod is used as an electric heating element, the silicon carbide rod has the characteristics of high temperature resistance, oxidation resistance, corrosion resistance, quick temperature rise, long service life, good deformation resistance and the like. At present, when silicification recrystallization of a silicon-carbon rod is carried out in an annealing furnace, adhesion is easy to occur between contacted carbon silicon rods at high temperature, so that the sintered carbon silicon rods cannot be separated or even damaged, and the problem of uneven temperature is easy to occur due to the fact that the carbon silicon rods are contacted too densely, so that the quality of the carbon silicon rods is affected.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, the utility model provides an annealing furnace of production carbon silicon rod, this kind of annealing furnace can effectively avoid the contact of carbon rod through optimizing and improving the furnace chamber inner structure of current carbon silicon rod annealing furnace. In order to achieve the above object, the technical solution of the present invention is as follows.

An annealing furnace for producing a carbon silicon rod, comprising: furnace body, gas circulation passageway, gas circulating pump and rack, wherein: the two ends of the gas circulation channel are communicated with the furnace chamber of the furnace body, and the gas circulation pump is arranged on the gas circulation channel to promote the circulation of the protective gas in the furnace chamber. The rack includes the fixed plate, by the support frame that montant and diagonal brace are constituteed, wherein: the fixing plate is horizontally fixed on the lower surface of the furnace chamber. The vertical rod is vertically fixed on the fixing plate, the inclined strut is fixed on the side wall of the vertical rod, and the inclined strut is obliquely arranged upwards relative to the vertical rod. The left side wall and the right side wall of the vertical rod are respectively provided with a row of inclined supporting rods distributed at intervals along the height direction of the vertical rod, and the supporting frames distributed at intervals are arranged along the length direction of the fixing plate.

Furthermore, the vertical rod is a hollow tube, and the side wall of the vertical rod is provided with a plurality of vent holes communicated with the tube cavity of the vertical rod.

Further, the placing frame is opposite to a furnace door of the furnace body, and the furnace door is rectangular, so that the carbon silicon rods can be conveniently placed on the inclined support rods.

Furthermore, an included angle between the inclined supporting rod and the vertical rod is set to be 20-40 degrees.

Furthermore, two ends of the gas circulation channel are respectively positioned on the left side wall and the right side wall of the furnace chamber, so that the protective gas can conveniently penetrate through the furnace chamber in the flowing process, and the temperature is promoted to be uniform.

Furthermore, the gas circulation channel is a quartz tube, and the outer wall of the gas circulation channel is coated with an insulating layer so as to reduce the heat loss in the furnace cavity.

Furthermore, two rows of diagonal braces on the left side wall and the right side wall of the vertical rod are distributed in a staggered mode, namely only one diagonal brace is arranged at the same height of the vertical rod, so that the carbon silicon rods are distributed in a staggered mode.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses set up the rack in the furnace chamber and be used for placing carbon silicon rod, this kind of rack forms the contained angle before through diagonal brace and montant, can regard as carbon silicon rod's support frame to can support carbon silicon rod's both ends on two sets of support frames, make carbon silicon rod be in unsettled state, avoid because of the contact between the carbon silicon rod take place the adhesion easily under the high temperature and the inhomogeneous problem of temperature that brings. In addition, the inclined stay bar arranged obliquely can extrude the carbon silicon rod on the vertical rod by utilizing the dead weight of the carbon silicon rod after the carbon silicon rod is placed on the inclined stay bar, so that the silicon carbon rod is more conveniently placed without extra measures for fixing the carbon silicon rod. Meanwhile, the circulating device for the protective gas is arranged, the flow of heat in the furnace cavity is realized by the protective gas, the uniform distribution of the temperature in the furnace cavity is promoted, and the production quality of the carbon silicon rod is ensured.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.

FIG. 1 is a front view of an annealing furnace for producing a carbon silicon rod according to an embodiment of the present invention.

Fig. 2 is a schematic structural view of the placement frame in the embodiment of the present invention.

Fig. 3 is a schematic structural view of a supporting frame according to another embodiment of the present invention.

The labels in the figures represent: 1-furnace body, 2-gas circulation channel, 3-gas circulation pump, 4-placing rack, 5-fixing plate, 6-vertical rod, 7-diagonal bar, 8-carbon silicon rod, 9-vent hole and 10-furnace chamber.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

In the description of the present invention, the terms "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and do not limit the structure, but merely to facilitate the description of the present invention, and do not indicate or imply that the equipment or components referred to need to have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present invention, which will now be further described with reference to the drawings and examples of the specification.

Referring to fig. 1 and 2, there is illustrated an annealing furnace for producing a carbon silicon rod, which mainly comprises: furnace body 1, gas circulation passageway 2, gas circulating pump 3 and rack 4, wherein:

the annealing furnace of the embodiment is improved and optimized based on the annealing furnace for producing carbon silicon rods commonly used by enterprises at present, and the main structure of the furnace body 1 and the auxiliary components thereof can be directly the existing annealing furnace for producing carbon silicon rods, and can also be the annealing furnace with other suitable structures.

The gas circulation channel 2 is a quartz tube, and the outer wall of the gas circulation channel is coated with a heat-insulating layer so as to reduce the heat loss in the furnace cavity. Both ends of the gas circulation channel 2 are communicated with the furnace chamber of the furnace body 1, and both ends of the gas circulation channel 2 are respectively positioned on the left side wall and the right side wall of the furnace chamber 10 of the furnace body 1, so that the protective gas penetrates through the furnace chamber in the flowing process, and the temperature is promoted to be uniform. The gas circulation pump 3 is provided on the gas circulation passage 2 to promote the circulation of the shielding gas in the furnace chamber. The circulation of heat in the furnace cavity can be realized by the flowing of the protective gas through the gas circulation channel 2 and the gas circulation pump 3, the uniform distribution of the temperature in the furnace cavity is promoted, and the production quality of the carbon silicon rod 9 is ensured.

The placing frame 4 is arranged in a furnace chamber of the furnace body 1, the placing frame 4 is right opposite to a furnace door 5 of the furnace body 1, and the furnace door 5 is rectangular, so that the carbon silicon rod 9 is placed on the inclined support rod 7. In particular, with continued reference to fig. 2, the rack 4 comprises: fixed plate 5, by the support frame that montant 6 and diagonal brace 7 are constituteed, wherein: the fixing plate 5 is horizontally fixed on the lower surface of the oven cavity. The vertical rod 6 is vertically fixed on the fixing plate 5, the inclined strut 7 is fixed on the side wall of the vertical rod 6, the inclined strut 7 is obliquely and upwards arranged relative to the vertical rod 6, and the included angle between the inclined strut 7 and the vertical rod 6 can be selected within 20-40 degrees, such as 20 degrees, 30 degrees, 35 degrees and 40 degrees, according to the diameter of the carbon silicon rod 9. Two rows of inclined supporting rods 7 distributed at intervals are respectively arranged on the left side wall and the right side wall of the vertical rod 6 along the height direction of the vertical rod, and the two rows of inclined supporting rods 7 on the left side wall and the right side wall are distributed in a staggered mode, namely only one inclined supporting rod 7 is arranged at the same height of the vertical rod 6, so that the carbon silicon rods 9 are distributed in a staggered mode. A plurality of rows of the supporting frames distributed at intervals are arranged along the length direction of the fixing plate 5.

Referring to fig. 3, in another embodiment, the vertical rod 6 is a hollow tube, and a plurality of air holes 9 are formed in the side wall of the hollow tube and communicated with the lumen of the vertical rod 6. By adopting the hollow pipe as the vertical rod 6, the resistance of the protective gas in the flowing process can be reduced, the heat is convenient to be uniformly distributed, and meanwhile, the hollow pipe has better deformation resistance under the long-term continuous heating and cooling environment, and the deformation of the vertical rod 6 is favorably reduced.

When using, support the both ends of carbon silicon rod 8 on two sets of support frames, make the carbon silicon rod be in unsettled state, avoid because of contact between the carbon silicon rod and take place the adhesion easily under the high temperature and the inhomogeneous problem of temperature that brings, have abundant space between the carbon silicon rod of crisscross distribution moreover and supply protective gas to pass, promote the evenly distributed of furnace chamber intracavity temperature. In addition, the inclined stay bar 7 arranged obliquely can utilize the dead weight of the carbon silicon rod to extrude the carbon silicon rod 8 on the vertical bar 6 after the carbon silicon rod is placed on the inclined stay bar, so that the silicon carbon rod is more conveniently placed without extra measures for fixing the carbon silicon rod.

Finally, it should be understood that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.

Claims

1. An annealing furnace for producing a carbon silicon rod, comprising:

a furnace body;

the two ends of the gas circulation channel are communicated with a furnace chamber of the furnace body;

the gas circulating pump is arranged on the gas circulating channel;

the rack, the rack includes the fixed plate, by the support frame that montant and diagonal brace are constituteed, wherein:

the fixing plate is horizontally fixed on the lower surface of the furnace chamber;

the vertical rod is vertically fixed on the fixing plate, the inclined strut is fixed on the side wall of the vertical rod, and the inclined strut is obliquely arranged upwards relative to the vertical rod;

a row of inclined supporting rods distributed at intervals are respectively arranged on the left side wall and the right side wall of the vertical rod along the height direction of the vertical rod;

and a plurality of rows of the supporting frames distributed at intervals are arranged along the length direction of the fixing plate.

2. The annealing furnace for producing the carbon silicon rod as set forth in claim 1, wherein the vertical rod is a hollow tube, and a plurality of vent holes communicated with a lumen of the vertical rod are formed in a side wall of the vertical rod.

3. The annealing furnace for producing the carbon silicon rod as set forth in claim 1, wherein the rack is disposed opposite to a furnace door of the furnace body, and the furnace door is rectangular.

4. The annealing furnace for producing the carbon silicon rod as set forth in claim 1, wherein the angle between the diagonal support rod and the vertical rod is set to be 20-40 °.

5. The annealing furnace for producing the carbon silicon rod as set forth in claim 1, wherein both ends of the gas circulation passage are respectively positioned on left and right sidewalls of the furnace chamber.

6. The annealing furnace for producing the carbon silicon rod as set forth in any one of claims 1 to 5, wherein the gas circulation passage is a quartz tube, and an outer wall thereof is coated with an insulating layer.

7. The annealing furnace for producing carbon silicon rods according to any one of claims 1 to 5, wherein two rows of diagonal braces on the left and right side walls of the vertical bars are distributed in a staggered manner, i.e., only one diagonal brace is located at the same height of the vertical bars.