CN216409744U

CN216409744U - Secondary edulcoration exhaust formula graphite furnace

Info

Publication number: CN216409744U
Application number: CN202123020746.3U
Authority: CN
Inventors: 黎应和; 周常春; 胡凤高
Original assignee: Miluo Xinxiang Carbon Products Co ltd
Current assignee: Miluo Xinxiang Carbon Products Co ltd
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2022-04-29
Anticipated expiration: 2031-12-03

Abstract

The utility model discloses a secondary impurity-removing exhaust type graphite furnace, which comprises a furnace body, wherein a feeding section, a temperature rising section and a discharging section are sequentially arranged in the furnace body from top to bottom, and a buffer section is also arranged between the temperature rising section and the discharging section; an upper electrode and a lower electrode are arranged in the furnace body, and the upper electrode is arranged at the top end of the furnace body; the lower electrode is annular and is matched with the side wall of the top end of the buffer section, and the middle position of the upper electrode and the lower electrode is positioned in the temperature rising section; a plurality of exhaust holes are formed in the side wall of the top end of the furnace body; a plurality of tail gas pipes are also arranged on the side wall of the buffer section; the tail gas pipe is arranged in an upward inclined manner from inside to outside. The setting of buffer segment between section and the play material section of heating can utilize the material waste heat to carry out secondary graphitization and edulcoration processing to the material after the material heaies up, and the tail gas pipe that the slope set up then can be when generating gasification impurity in the buffer segment, and free discharge avoids impurity to flow along with the material, improves the stability of finished product quality.

Description

Secondary edulcoration exhaust formula graphite furnace

Technical Field

The utility model relates to the technical field of impurity removal of graphite furnaces, and particularly belongs to a secondary impurity removal and exhaust type graphite furnace.

Background

The graphitized powder is mainly used as a recarburizer in ferrous metallurgy, a cathode carbon block of a non-ferrous metal electrolytic bath, a prebaked anode and a diamond product, and is an important industrial material.

The existing widely used graphitization furnace is a vertical graphite resistance furnace, and the temperature of the raw materials is raised through positive and negative graphite blocks which are arranged up and down; the principle is that after the raw materials pass through an electric field between a positive electrode and a negative electrode, the raw materials generate heat after being electrified due to self resistance of the raw materials, and the raw materials are subjected to high-temperature treatment.

However, when the electric field range is constant, when the raw materials rapidly pass through the electric field, impurities in partial raw materials are not completely gasified, and the raw materials are gradually gasified in the descending process due to slow change of the environmental temperature and temperature maintenance in the furnace body, and the gasified impurities are easily carried and flowed out by the materials due to the middle and lower ends of the furnace body, so that the quality of finished products is affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: provides a secondary impurity removal exhaust type graphite furnace capable of avoiding the bottom material from carrying gasified impurities.

The technical scheme adopted by the utility model is as follows:

a secondary impurity-removing exhaust type graphite furnace comprises a furnace body, wherein a feeding section, a temperature raising section and a discharging section are sequentially arranged in the furnace body from top to bottom, and a buffer section is also arranged between the temperature raising section and the discharging section; an upper electrode and a lower electrode are arranged in the furnace body, and the upper electrode is arranged at the top end of the furnace body; the lower electrode is annular and is matched with the side wall of the top end of the buffer section, and the middle position of the upper electrode and the lower electrode is positioned in the temperature rising section; a plurality of exhaust holes are formed in the side wall of the top end of the furnace body; and a plurality of tail gas pipes are also arranged on the side wall of the buffer section. The setting of buffer segment between section and the play material section of heating can utilize the material waste heat to carry out secondary graphitization and edulcoration processing to the material after the material heaies up, and when the setting of tail gas pipe then can produce gasification impurity in the buffer segment, the free discharge avoids impurity to flow along with the material, improves the stability of finished product quality.

Preferably, an annular flue is arranged in the side wall of the top end of the furnace body, a smoke leading port is arranged between the interior of the furnace body and the annular flue, and the exhaust hole is communicated with the annular flue. The setting of ring type flue and smoke guide mouth, when carrying out the negative pressure smoking in to the furnace body, the accessible adds a plurality of smoke guide mouths and comes to carry out the negative pressure smoking by each position of furnace body circumference in step to this improves smoke exhaust effect, and the practicality is strong.

Preferably, the furnace body outside orientation smoke guide mouth position still is provided with the viewing aperture, viewing aperture department is provided with the switch door. In the in-service use process, because high temperature department only is graphite furnace core position, waste gas when leading to the section top that heats, the temperature reduces, if the negative pressure is not enough or the single production is accomplished the back, waste gas can be at the raw materials surface at liquefaction-solidification back adhesion, forms the waste material shell, influences the feeding, the feeding state then can in time be observed in the setting of viewing aperture, when the feeding top layer formed the waste material shell, can open the ooff door and destroy the waste material shell, avoid causing the influence to the feeding.

Preferably, one end of the tail gas pipe, which is far away from the furnace body, is provided with a one-way valve.

Preferably, the check valve includes outer valve plate, interior valve plate and valve ball, the valve ball sets up outer valve plate with between the interior valve plate, interior valve plate is close to the inside setting of furnace body, interior valve plate is the annular slope and sets up, outer valve plate is netted setting, the valve ball be applicable to with the involution sets up the tail gas pipe when interior valve plate contacts. The setting of inside and outside valve plate and valve ball, the gas can jack-up valve ball at the exhaust in-process, discharge to the furnace body outside behind looping through interior valve plate, outer valve plate, under conventional state, the valve ball can contact with interior valve plate under the action of gravity, and the involution tail gas pipe avoids external gas, impurity to get into and influences normal use.

In summary, due to the adoption of the technical scheme, the utility model has the beneficial effects that:

1. according to the utility model, through the arrangement of the buffer section, after the temperature of the material is raised, the material can be subjected to secondary graphitization and impurity removal treatment by utilizing the waste heat of the material, and in addition, the tail gas pipe which is obliquely arranged upwards can be freely discharged when gasified impurities are generated in the buffer section, so that the impurities are prevented from flowing out along with the material, and the stability of the quality of a finished product is improved.

2. According to the utility model, through the arrangement of the annular flue and the smoke guide ports, when negative pressure smoking is performed in the furnace body, the negative pressure smoking can be synchronously performed at all positions in the circumferential direction of the furnace body by additionally arranging the plurality of smoke guide ports, so that the smoke exhaust effect is improved, and the practicability is high.

3. According to the utility model, through the arrangement of the inner valve plate, the outer valve plate and the valve ball, in the exhaust process, the gas can jack up the valve ball, and the valve ball is discharged to the outer side of the furnace body after passing through the inner valve plate and the outer valve plate in sequence.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic front sectional view of the present invention.

Fig. 2 is an enlarged schematic view of region a in fig. 1.

FIG. 3 is a schematic top sectional view of the annular flue duct of the present invention.

The labels in the figure are: 1-furnace body, 2-feeding section, 3-temperature raising section, 4-discharging section, 5-buffering section, 6-upper electrode, 7-lower electrode, 8-exhaust hole, 9-tail gas pipe, 10-annular flue, 11-smoke leading port, 12-observation port, 13-switch door, 14-outer valve plate, 15-inner valve plate and 16-valve ball.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

As shown in fig. 1, 2 and 3, a secondary impurity removal and exhaust type graphite furnace comprises a furnace body 1, wherein a feeding section 2, a heating section 3 and a discharging section 4 are sequentially arranged in the furnace body 1 from top to bottom, and a buffer section 5 is also arranged between the heating section 3 and the discharging section 4; an upper electrode 6 and a lower electrode 7 are arranged in the furnace body 1, and the upper electrode 6 is arranged at the top end of the furnace body 1; the lower electrode 7 is annular and is matched with the side wall of the top end of the buffer section 5, and the middle positions of the upper electrode 6 and the lower electrode 7 are positioned in the temperature rising section 3; a plurality of exhaust holes 8 are formed in the side wall of the top end of the furnace body 1; the side wall of the buffer section 5 is also provided with a plurality of tail gas pipes 9; the tail gas pipe 9 is obliquely arranged from inside to outside upwards; an annular flue 10 is arranged in the side wall of the top end of the furnace body 1, a smoke leading port 11 is arranged between the inside of the furnace body 1 and the annular flue 10, and the exhaust hole 8 is communicated with the annular flue 10; an observation port 12 is further arranged at the position, facing the smoke leading port 11, of the outer side of the furnace body 1, and a switch door 13 is arranged at the position of the observation port 12; one end of the tail gas pipe 9, which is far away from the furnace body 1, is provided with a one-way valve; the check valve includes outer valve plate 14, interior valve plate 15 and valve ball 16, valve ball 16 sets up outer valve plate 14 with between the interior valve plate 15, interior valve plate 15 is close to 1 inside settings of furnace body, interior valve plate 15 is the setting of annular slope, outer valve plate 14 is netted setting, valve ball 16 be applicable to with the involution sets up tail gas pipe 9 during the contact of interior valve plate 15.

In the use process, materials enter the furnace body 1 from the feeding section 2, after the temperature is raised through an electric field formed by the upper electrode 6 and the lower electrode 7, internal impurities are gasified and discharged through the smoke guide opening 11, the annular flue 10 and the exhaust hole 8, then the materials flow to the buffer section 5, secondary graphitization and impurity removal operation are carried out under the action of waste heat of the materials, the gasified impurities generated in the process can be discharged out of the furnace body 1 under the action of the tail gas pipe 9, the impurities are prevented from being mixed with finished materials, and the stability of the quality of finished products is improved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a secondary edulcoration exhaust formula graphite furnace, includes furnace body (1), its characterized in that, feed section (2), intensification section (3) and ejection of compact section (4) have set gradually from top to bottom in furnace body (1), wherein:

a buffer section (5) is also arranged between the temperature rising section (3) and the discharging section (4);

an upper electrode (6) and a lower electrode (7) are arranged in the furnace body (1), and the upper electrode (6) is arranged at the top end of the furnace body (1);

the lower electrode (7) is annular and is matched with the side wall of the top end of the buffer section (5), and the middle positions of the upper electrode (6) and the lower electrode (7) are positioned in the temperature rising section (3);

a plurality of exhaust holes (8) are formed in the side wall of the top end of the furnace body (1);

the side wall of the buffer section (5) is also provided with a plurality of tail gas pipes (9).

2. The secondary impurity removal and exhaust type graphite furnace according to claim 1, wherein an annular flue (10) is arranged in the side wall of the top end of the furnace body (1), a smoke leading port (11) is arranged between the inside of the furnace body (1) and the annular flue (10), and the exhaust hole (8) is communicated with the annular flue (10).

3. The graphite furnace with secondary impurity removal and exhaust functions as claimed in claim 2, wherein an observation port (12) is further formed in the position, facing the smoke introduction port (11), of the outer side of the furnace body (1), and an opening and closing door (13) is arranged at the position of the observation port (12).

4. The secondary impurity removal and exhaust type graphite furnace as claimed in claim 1, wherein one end of the tail gas pipe (9) far away from the furnace body (1) is provided with a one-way valve.

5. A secondary impurity removal and exhaust type graphite furnace according to claim 4, wherein the one-way valve comprises an outer valve plate (14), an inner valve plate (15) and a valve ball (16), the valve ball (16) is arranged between the outer valve plate (14) and the inner valve plate (15), the inner valve plate (15) is arranged close to the inside of the furnace body (1), the inner valve plate (15) is arranged in an annular inclined manner, the outer valve plate (14) is arranged in a net shape, and the valve ball (16) is suitable for sealing and arranging a tail gas pipe (9) when contacting with the inner valve plate (15).