CN217604637U

CN217604637U - Protection component of fritting furnace electrode

Info

Publication number: CN217604637U
Application number: CN202221255256.3U
Authority: CN
Inventors: 崔志文; 柴神洲; 欧鹏; 刘建辉
Original assignee: Hunan Weishang Technology Co ltd
Current assignee: Hunan Weishang Technology Co ltd
Priority date: 2022-05-24
Filing date: 2022-05-24
Publication date: 2022-10-18
Anticipated expiration: 2032-05-24

Abstract

The utility model relates to the technical field of high-temperature sintering furnaces, and discloses a protective component of a sintering furnace electrode, wherein the inner side and the outer side of the sintering furnace are respectively provided with a heat-preserving container and a furnace shell, the electrode is arranged in the heat-preserving container and the furnace shell in a penetrating way, the protective component comprises an insulating component arranged at the outer side of the electrode and a sealing component arranged between the furnace shell and the heat-preserving container and positioned at the outer side of the insulating component, and the insulating component comprises a plurality of layers of insulating parts which are sequentially arranged on the electrode from the outer side to the inner side of the sintering furnace and a clamping part clamped at the outer side of the insulating part; the sealing assembly comprises an adjusting seat fixedly connected to the clamping piece and a sealing sleeve positioned between the adjusting seat and the heat-insulating barrel, and the sealing sleeve can be adjusted in height through the adjusting seat and is in close contact with the heat-insulating barrel. The utility model provides a sealing component can improve the sealing performance of fritting furnace electrode, reduces the emergence of electric leakage phenomenon by a wide margin, improves the stove internal temperature homogeneity, reduces the energy consumption, and insulating component can improve the insulating properties of fritting furnace electrode, avoids taking place electrically conductive phenomenon.

Description

Protection component of fritting furnace electrode

Technical Field

The utility model relates to a protection subassembly of fritting furnace electrode belongs to high temperature fritting furnace technical field.

Background

The sintering furnace heats and sinters metal, ceramic or some refractory metal intermediate compound powder in vacuum and protective atmosphere to obtain a dense body material with certain density and certain mechanical property. The sintering furnace mainly comprises a vacuum air pressure sintering furnace, a discharge plasma sintering furnace and the like. The vacuum air pressure sintering furnace combines vacuum sintering and high-temperature sintering together, and is widely applied to sintering and molding of various anti-oxidation materials in the fields of powder metallurgy and vacuum diffusion welding. The outer side of the vacuum sintering furnace is generally provided with a furnace shell, the inner side of the vacuum sintering furnace is provided with a heat-insulating cylinder, an electrified electrode is arranged between the furnace shell and the heat-insulating cylinder in a penetrating way, and gaps are generally reserved between the electrode and the furnace shell and the heat-insulating cylinder. The sintering furnace in the prior art mainly has the following problems:

1. the sealing performance of the electrode is poor: the furnace shell gap is easy to cause foreign matters such as dust or powder to fall into the electrode from the gap, so that the electrode is easy to leak electricity; the clearance of the heat-preserving barrel can lead high-temperature gas in the barrel and low-temperature gas outside the barrel to generate convection, and the low-temperature gas enters a heating area in the barrel, thereby influencing the temperature uniformity in the furnace and increasing the energy consumption.

2. The insulating property of the electrode is poor: the electrodes, the furnace shell and the heat-insulating barrel are all required to be insulated, the insulating parts in the conventional sintering furnace are washed by high-temperature gas coming out of the heat-insulating barrel, the insulating property of the insulating parts is seriously attenuated, the service life is short, the electric leakage phenomenon is easy to occur, and particularly, the whole furnace product can be scrapped and serious economic loss is caused when the electric leakage fault occurs in the sintering process.

In summary, how to improve the sealing performance, insulating performance and reliability of the sintering furnace electrode, improve the uniformity of the temperature field and reduce the energy consumption is a problem that needs to be solved at present.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a protection component of fritting furnace electrode, accessible sealing component improve the sealing performance of fritting furnace electrode, improve the insulating properties of fritting furnace electrode through insulating component, avoid the emergence of conducting phenomenon and electric leakage phenomenon.

In order to achieve the above object, the utility model provides a following technical scheme: a protection component for an electrode of a sintering furnace is characterized in that a heat-insulating barrel and a furnace shell are respectively arranged on the inner side and the outer side of the sintering furnace, the electrode penetrates through the heat-insulating barrel and the furnace shell, and the protection component comprises an insulating component arranged on the outer side of the electrode and a sealing component arranged between the furnace shell and the heat-insulating barrel and positioned on the outer side of the insulating component; the insulating assembly comprises a plurality of layers of insulating parts and clamping parts, wherein the insulating parts are sequentially arranged on the electrodes from the outer side to the inner side of the sintering furnace; the sealing assembly comprises an adjusting seat fixedly connected to the clamping piece and a sealing sleeve positioned between the adjusting seat and the heat-insulating barrel, and the sealing sleeve can be adjusted in height through the adjusting seat and is in close contact with the heat-insulating barrel.

Preferably, the adjusting seat comprises a fixed seat fixedly connected to the clamping piece and a movable seat capable of moving along the axial direction L outside the fixed seat; the sealing sleeve is fixed on the movable seat and can be driven by the movable seat to move along the axial direction L so as to be in close contact with the heat-insulating barrel.

Preferably, a base plate is arranged on one side, far away from the clamping piece, of the movable seat, and the sealing sleeve is located on the base plate.

Preferably, a containing groove is formed between the fixing seat and the backing plate, and the outer end of the sealing sleeve is contained in the containing groove.

Preferably, the sealing sleeve comprises a plurality of layers of carbon felt and carbon paper disposed between adjacent carbon felts.

Preferably, the electrodes comprise a red copper electrode and a graphite electrode located inside the red copper electrode; the insulation part comprises an outer bushing positioned on the outer peripheral surface of the red copper electrode, and the clamping part comprises an electricity inlet column flange positioned on the outer peripheral surface of the outer bushing; and a compression ring is arranged among the outer bushing, the power inlet column flange and the red copper electrode.

Preferably, the inner side of the outer bushing is provided with an inner bushing, and the outer peripheral surface of the inner bushing is provided with an electrode flange; and sealing rings are arranged among the inner bushing, the power inlet column flange, the red copper electrode and the electrode flange.

Preferably, two layers of porcelain sleeves are arranged on the inner side of the inner bushing, namely a lower porcelain sleeve positioned on the peripheral surfaces of the red copper electrode and the graphite electrode and an upper porcelain sleeve positioned on the inner side of the lower porcelain sleeve.

Preferably, the fixed seat is fixedly connected to the inner end face of the electrode flange; one end of the backing plate, which is far away from the movable seat, is connected to the peripheral surface of the lower porcelain sleeve in a sliding manner.

Preferably, the inner and outer liners are both bakelite liners; the sealing ring is a bakelite sealing ring, and the clamp ring is a bakelite clamp ring.

The technical effects are as follows:

1. the utility model provides a seal assembly includes fixing base, sliding seat and seal cover, through the height with the adjustable seal cover of sliding seat regulation from top to bottom on the fixing base for the seal cover closely laminates with the heat-preserving container, has following advantage simultaneously:

1) The electrode can be prevented from leaking electricity due to the fact that foreign matters such as dust or powder fall into gaps around the electrode;

2) The convection between high-temperature gas in the heat-insulating barrel and low-temperature gas outside the barrel through a gap in the insulating ceramic sleeve can be avoided, the influence of the low-temperature gas on the uniformity of a furnace internal temperature field is prevented, and the heating energy consumption is reduced;

3) The high-temperature gas can be greatly reduced to wash away the insulating ceramic sleeve, the attenuation speed of the insulating ceramic sleeve is greatly reduced, the service life of the insulating ceramic sleeve is prolonged, the probability of furnace shutdown caused by insulation variation and leakage is reduced, and the loss of users is reduced.

2. The sealing sleeve is formed by matching a plurality of layers of carbon felts and a plurality of layers of carbon paper, has high structural strength and elasticity, low thermal conductivity, high heat insulation, high temperature resistance, difficult damage, difficult deformation and low cost.

3. Due to the large pressure in the sintering furnace, the electrode risks being ejected by the pressure in the furnace. The utility model discloses well insulating assembly is including locating outer bush, neck bush, the post flange of advancing electricity, the electrode flange in the red copper electrode outside, can prevent that the red copper electrode from being ejecting by the stove high pressure, avoids electric leakage, conducting phenomenon's emergence.

4. The utility model provides an insulating assembly still includes porcelain bushing and last porcelain bushing down, and the insulating between mainly used red copper electrode, graphite electrode and the heat-preserving container prevents that the heat-preserving container from taking place electrically conductive phenomenon.

5. The utility model discloses including the sealing ring and the clamp ring of locating the red copper electrode outside, can prevent that the high temperature air current from running out to reduce the temperature of whole red copper electrode and graphite electrode, further protect seal assembly's performance simultaneously, improve seal assembly's life.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 isbase:Sub>A sectional view in the directionbase:Sub>A-base:Sub>A of fig. 1.

Fig. 3 is a partial enlarged view of fig. 2 at M.

Fig. 4 is a schematic structural view of the seal assembly.

Description of reference numerals:

1. an outer liner; 2. a power inlet column flange; 3. a compression ring; 4. an inner liner; 5. a red copper electrode; 6. a porcelain bushing is arranged; 7. mounting a porcelain bushing; 8. a graphite electrode; 9. a sealing sleeve; 901. a carbon felt; 902. carbon paper; 10. a movable seat; 11. a base plate; 12. a fixed seat; 13. an electrode sheath; 14. an electrode flange; 15. a seal ring; 16. a furnace shell; 17. a heat-preserving barrel; 18. accommodating grooves; 19. and (7) mounting a boss.

Detailed Description

Embodiments of the present invention are described in further detail below with reference to fig. 1-4. The inner side is referred to as a side of the reference material close to the inside of the sintering furnace, i.e., close to the heat-insulating barrel 17, and the outer side is referred to as a side of the reference material away from the heat-insulating barrel 17.

A protection component of a sintering furnace electrode is shown in figure 1, wherein a heat-insulating barrel 17 and a furnace shell 16 are respectively arranged on the inner side and the outer side of a sintering furnace, and the electrode is arranged in the heat-insulating barrel 17 and the furnace shell 16 in a penetrating way; the protection component comprises an insulation component arranged on the outer side of the electrode and a sealing component arranged between the furnace shell 16 and the heat-insulating barrel 17, and the sealing component is integrally positioned on the outer side of the insulation component; the electrode includes red copper electrode 5 and is located the inboard graphite electrode 8 of red copper electrode 5, and when the fritting furnace used, the whole and cable intercommunication of electrode, the electric current passes through red copper electrode 5, gets into the fritting furnace through graphite electrode 8 again.

The insulating assembly comprises a plurality of layers of insulating parts and clamping parts, wherein the insulating parts are sequentially arranged on the electrodes from the outer side to the inner side of the sintering furnace; as shown in fig. 2, the outer peripheral surface of the red copper electrode 5 is provided with a mounting boss 19, the insulating member comprises an outer bushing 1 positioned on the outer peripheral surface of the red copper electrode 5, the outer bushing 1 is positioned outside the mounting boss 19, and the clamping member comprises an electricity inlet column flange 2 positioned on the outer peripheral surface of the outer bushing 1; the clamp ring 3 is arranged among the outer bushing 1, the power feeding column flange 2 and the mounting boss 19 of the red copper electrode 5, the red copper electrode 5 can be prevented from being ejected out due to high pressure in the furnace through the power feeding column flange 2, the clamp ring 3 can realize sealing among the outer bushing 1, the power feeding column flange 2 and the red copper electrode 5, and the temperature of the electrodes is reduced.

An inner bushing 4 is arranged on the inner side of the outer bushing 1, the inner bushing 4 is positioned on the inner side of the mounting boss 19, an electrode flange 14 is arranged on the outer peripheral surface of the inner bushing 4, and the electrode flange 14 is fixedly arranged in the furnace shell 16 in a penetrating manner; a sealing ring 15 is arranged among the inner bushing 4, the power inlet column flange 2, the electrode flange 14 and a mounting boss 19 of the red copper electrode 5, the electrode flange 14 can prevent the red copper electrode 5 and the graphite electrode 8 from being ejected out due to high pressure in the furnace, the sealing ring 15 can realize the sealing among the inner bushing 4, the power inlet column flange 2, the electrode flange 14 and the red copper electrode 5 and prevent high-temperature airflow from escaping, so that the temperature of the whole red copper electrode 5 and the graphite electrode 8 is reduced, and the service life of a sealing assembly is prolonged; as shown in fig. 2, the outer end of the electrode flange 15 and the inner end of the power feeding column flange 2 are respectively positioned at two sides of the mounting boss 19, and are compressed and sealed by the sealing rings 15 and the compression rings 3 at the inner and outer sides of the mounting boss 19, so as to realize the mounting and positioning of the electrode flange 15 and the power feeding column flange 2.

Two layers of porcelain sleeves are arranged on the inner side of the inner bushing 4, namely a lower porcelain sleeve 6 positioned on the peripheral surfaces of the red copper electrode 5 and the graphite electrode 8 and an upper porcelain sleeve 7 positioned on the inner side of the lower porcelain sleeve 6; the two layers of porcelain sleeves are used for insulating the red copper electrode 5, the graphite electrode 8 and the heat-insulating barrel 17, so that the heat-insulating barrel 17 is prevented from conducting electricity. The inner bushing 4 and the outer bushing 1 in the embodiment are both bakelite bushings; the sealing ring 15 is the bakelite sealing ring 15, and clamp ring 3 is the bakelite clamp ring 3, and the bush, clamp ring 3 and sealing ring 15 of other materials also can be selected according to actual need to the skilled in the art.

As shown in fig. 2 and 3, the sealing assembly includes an adjusting seat fixedly connected to the electrode flange 14 and a sealing sleeve 9 located between the adjusting seat and the heat-insulating barrel 17, and the sealing sleeve 9 can be adjusted in height by the adjusting seat and is tightly contacted with the heat-insulating barrel 17; the adjusting seat comprises a fixed seat 12 fixedly connected to the inner end face of the electrode flange 14 and a movable seat 10 capable of moving along the axial direction L outside the fixed seat 12, an external thread is arranged on the outer peripheral surface of the fixed seat 12, an internal thread matched with the external thread of the fixed seat 12 is arranged on the inner peripheral surface of the movable seat 10, and the movable seat 10 can move along the axial direction L by moving the movable seat 10 on the fixed seat 12.

A backing plate 11 is arranged on one side, far away from the clamping piece, of the movable seat 10, the backing plate 11 and the movable seat 10 are fixedly connected to one side, far away from the electrode flange 14, of the fixed seat 12, one end, far away from the movable seat 10, of the backing plate 11 is connected to the outer peripheral surface of the lower porcelain sleeve 6 in a sliding mode, and the sealing sleeve 9 is located on the backing plate 11; an accommodating groove 18 is formed between the fixed seat 12 and the backing plate 11, the outer end of the sealing sleeve 9 is accommodated in the accommodating groove 18, and the movable seat 10 can drive the sealing sleeve 9 to move along the axial direction L so as to adjust the sealing position between the movable seat and the heat-insulating barrel 17 and be tightly contacted with the heat-insulating barrel 17; wherein the sealing sleeve 9 comprises a plurality of layers of carbon felt 901 and carbon paper 902 arranged between adjacent carbon felt 901.

The above embodiments are merely illustrative of the present invention, and are not intended to limit the present invention, and those skilled in the art can make modifications without inventive contribution to the embodiments of the present invention as needed after reading the present specification, but all the embodiments of the present invention are protected by patent laws within the scope of the claims of the present invention.

Claims

1. A protection component of a sintering furnace electrode is characterized in that the protection component comprises an insulation component arranged on the outer side of the electrode and a sealing component arranged between the furnace shell (16) and the insulation barrel (17) and positioned on the outer side of the insulation component; the insulating assembly comprises a plurality of layers of insulating parts and clamping parts, wherein the insulating parts are sequentially arranged on the electrodes from the outer side to the inner side of the sintering furnace; the sealing assembly comprises an adjusting seat fixedly connected to the clamping piece and a sealing sleeve (9) located between the adjusting seat and the heat-insulating barrel (17), and the sealing sleeve (9) can be adjusted in height through the adjusting seat and is in close contact with the heat-insulating barrel (17).

2. The shielding assembly of a sintering furnace electrode according to claim 1, characterized in that the adjusting seat comprises a fixed seat (12) fixedly connected to the clamping member and a movable seat (10) movable in the axial direction L outside the fixed seat (12); the sealing sleeve (9) is fixed on the movable seat (10) and can be driven by the movable seat (10) to move along the axial direction L so as to be in close contact with the heat-insulating barrel (17).

3. Sintering furnace electrode guard assembly according to claim 2, characterized in that a shim plate (11) is arranged on the side of the movable seat (10) remote from the clamping member, and the sealing sleeve (9) is located on the shim plate (11).

4. Sintering furnace electrode guard assembly according to claim 3, characterized in that between the holder (12) and the shim plate (11) is formed a receiving groove (18), the outer end of the sealing sleeve (9) being received in the receiving groove (18).

5. A shield assembly for sintering furnace electrodes according to claim 4, characterized in that the sealing sleeve (9) comprises a plurality of layers of carbon felt (901) and carbon paper (902) arranged between adjacent carbon felt (901).

6. A shield assembly of a sintering furnace electrode according to claim 5, characterized in that the electrode comprises a red copper electrode (5) and a graphite electrode (8) located inside the red copper electrode (5); the insulating part comprises an outer bushing (1) positioned on the outer peripheral surface of the red copper electrode (5), and the clamping part comprises an electricity inlet column flange (2) positioned on the outer peripheral surface of the outer bushing; a compression ring (3) is arranged among the outer bushing, the power inlet column flange (2) and the red copper electrode (5).

7. A protective assembly for sintering furnace electrodes according to claim 6, characterized in that the inner side of the outer bushing (1) is provided with an inner bushing (4), and the outer peripheral surface of the inner bushing (4) is provided with an electrode flange (14); a sealing ring (15) is arranged between the inner bushing (4), the current inlet column flange (2), the red copper electrode (5) and the electrode flange (14).

8. A protective assembly for electrodes of sintering furnaces according to claim 7, characterized in that the inner side of the inner bushing (4) is provided with two layers of porcelain bushings, respectively a lower porcelain bushing (6) on the outer circumference of the red copper electrode (5) and the graphite electrode (8) and an upper porcelain bushing (7) on the inner side of the lower porcelain bushing (6).

9. The protection assembly of the sintering furnace electrode according to the claim 8, characterized in that the fixed seat (12) is fixedly connected to the inner end face of the electrode flange (14); one end of the backing plate (11) far away from the movable seat (10) is connected to the peripheral surface of the lower porcelain sleeve (6) in a sliding mode.

10. A protective assembly of a sintering furnace electrode according to claim 9, characterized in that the inner (4) and outer (1) bushings are bakelite bushings; the sealing ring (15) is a bakelite sealing ring (15), and the clamp ring (3) is a bakelite clamp ring (3).