CN217330653U

CN217330653U - Sintering furnace electrode component convenient to clean

Info

Publication number: CN217330653U
Application number: CN202221255226.2U
Authority: CN
Inventors: 欧鹏; 崔志文; 柴神洲; 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: 2022-08-30
Anticipated expiration: 2032-05-24

Abstract

The utility model relates to the technical field of high-temperature sintering furnaces, and discloses a sintering furnace electrode assembly convenient to clean, which comprises an electrode body, an insulator arranged on the outer side of the electrode body and an electrode flange arranged on the outer side of the insulator; a first gap is formed between the electrode flange and the insulator, and a second gap is formed between the electrode body and the insulator; and the electrode flange is provided with a cleaning through hole communicated with the first gap and the second gap. The utility model discloses can clear up dust, powder or other foreign matters in clearance one and clearance two according to the untimely passing through of actual demand to letting in high-pressure inert gas in the clean through-hole to prevent that outside foreign matter from getting into the clearance, can prevent the electrode electric leakage by the high efficiency.

Description

Sintering furnace electrode component convenient to clean

Technical Field

The utility model relates to a fritting furnace electrode subassembly convenient to it is clean 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, high pressure 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 outside of vacuum sintering stove has the stove outer covering usually, and there is a heat preservation section of thick bamboo inboard, wears to be equipped with the circular telegram electrode between stove outer covering and heat preservation bucket, and the circular telegram electrode outside is equipped with furnace body electrode flange, leaves the clearance usually between electrode and the furnace body electrode flange, in the long-term working process of fritting furnace, gets into easily in the clearance and piles up foreign matter such as dust powder, and the temperature of fritting furnace is higher in addition, causes electric leakage fault very easily, consequently needs to set up cleaning device and in time clears up foreign matter such as dust powder. The following patents in the prior art relate to the cleaning of sintering furnaces:

1. the patent publication number is "CN 113048781A", the patent name is "a vertical sintering furnace convenient to clean", the invention patent of this sintering furnace, the top of this sintering furnace has seal ring groups, there are bottom electrodes and upper electrodes inside, the bottom of the upper electrode has pressure heads; the side of fritting furnace is equipped with down the mechanism, and the bottom is equipped with clean mechanism and drainage mechanism, and the outside is equipped with water cooling mechanism and air pressure control mechanism, and the output of water cooling mechanism is located the inside of fritting furnace, and air pressure control mechanism's output communicates with the inside of fritting furnace.

2. Patent publication is "CN 215413237U", the patent name is "a high pressure sintering equipment for diamond composite production convenient to it is clean" utility model patent, including the fritting furnace, fixed subassembly has been placed to the inner wall of fritting furnace, and fixed subassembly is run through by drive assembly, and installs on the fixed subassembly and collect the subassembly, and drive assembly runs through clean subassembly, and fixed subassembly, clean subassembly and drive assembly are dismantlement formula structure, and all deposit on the subassembly of placing at the fritting furnace back after fixed subassembly, clean subassembly and the drive assembly dismantlement. The utility model discloses a not only can be very light the inner wall of clean fritting furnace, but also can be through the clean dust of collecting the convenient collection of subassembly to can put each subassembly of dismantling, convenient reuse through placing the subassembly.

However, the above prior arts all have the following problems:

1. only dust and foreign matters in the sintering furnace can be cleaned, and dust and foreign matters between the electrode and the gap of the furnace body electrode flange cannot be cleaned.

2. Dust, powder or other foreign matters in the clearance need be through dismantling back with stove outer covering, electrode and furnace body electrode flange, just can clear up, waste time and energy, and cause the damage of part at the dismouting in-process easily.

3. The cleaning work can be usually only carried out when the sintering furnace stops working, and the automatic cleaning can not be carried out at random according to the actual requirement.

In view of the above, it is desirable to provide an electrode assembly that can be easily self-cleaned without disassembling parts thereof to effectively prevent leakage of electricity from the electrode.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fritting furnace electrode subassembly convenient to it is clean, can not clear up the foreign matter that lets in high-pressure inert gas in clearance one and clearance two according to the actual demand by fritting furnace operating condition and time restriction to prevent that outside foreign matter from getting into the clearance, prevent the electrode electric leakage.

In order to achieve the above object, the utility model provides a following technical scheme: a sintering furnace electrode assembly convenient for cleaning comprises an electrode body, an insulator arranged outside the electrode body and an electrode flange arranged outside the insulator; a first gap is formed between the electrode flange and the insulator, and a second gap is formed between the electrode body and the insulator; and the electrode flange is provided with a cleaning through hole communicated with the first gap and the second gap, and dust, powder or other foreign matters in the first gap and the second gap can be cleaned by introducing high-pressure inert gas into the cleaning through hole.

Preferably, the insulator is provided with a gas guide hole communicated with the cleaning through hole, and high-pressure inert gas is introduced through the gas guide hole to clean foreign matters in the second gap.

Preferably, the air guide hole is positioned in the middle of the insulator corresponding to the cleaning through hole; the air guide holes comprise a plurality of air guide holes which are uniformly arranged in the circumferential direction of the insulator.

Preferably, the middle part of the electrode flange is provided with an electrode mounting hole for mounting the electrode body and the insulator along the axial direction, and a guide step for guiding high-pressure inert gas is arranged at the communication part of the electrode mounting hole and the cleaning through hole.

Preferably, the flow guide step is arranged on the hole wall at the lower part of the communication part of the electrode mounting hole and the cleaning through hole.

Preferably, the flow guiding step is of a concave annular structure embedded in the wall of the electrode mounting hole.

Preferably, the flow guiding step comprises a bottom wall and a side wall, the side wall is of a conical structure with the inner diameter gradually reduced from bottom to top, and the side wall of the conical structure assists the high-pressure air flow to uniformly flow upwards in the first gap around the insulator and cleans foreign matters in the first gap.

Preferably, the angle β between the side wall and the bottom wall is: beta is more than 50 degrees and less than 80 degrees.

Preferably, the cleaning through hole is a circular through hole structure with the inner diameter of 3mm-8 mm.

Preferably, a connecting boss is arranged on the outer end face of the electrode flange corresponding to the cleaning through hole, the cleaning through hole extends into the connecting boss, and an external high-pressure pipeline is communicated with the connecting boss; and high-pressure inert gas is sprayed into the cleaning through hole from the connecting boss through an external high-pressure pipeline.

The utility model has the advantages that:

1. the utility model discloses set up on the electrode flange and communicate to clean through-hole on electrode body and the insulator, rethread high-pressure trachea spouts high-pressure inert gas to clean in the through-hole, can be to the dust in clearance one between electrode flange and the insulator and the clearance two between electrode body and the insulator, powder or other foreign matters clear up, and prevent that outside foreign matter from getting into clearance one and clearance two, thereby make and to make electrode subassembly keep clean under the condition that does not need to dismantle each part of electrode subassembly, and then improve the life of electrode, and reduce the clean degree of difficulty.

2. And air guide holes communicated with the cleaning through holes are uniformly distributed on the insulating part, and high-pressure inert gas can flow into the air guide holes from the cleaning through holes and then flow into the second gap to clean foreign matters in the second gap.

3. A flow guide step is arranged at the communication position between the electrode mounting hole and the cleaning through hole, and high-pressure inert gas can flow upwards (towards the inside of the furnace) around the insulator through the flow guide step after entering from the cleaning through hole, so that the air flow is more uniform, and the cleaning effect on foreign matters in the gap I is better.

4. The outer end face of the electrode flange is provided with a connecting boss corresponding to the cleaning through hole, the high-pressure pipeline is connected with the electrode flange through the connecting boss, the connection stability is high, and the sealing performance is good.

5. The utility model discloses well electrode subassembly's cleanness does not receive the restriction of fritting furnace operating condition and time, can carry out the cleaning work of modes such as intermittent type formula clearance or continuous type clearance according to the actual demand to fritting furnace electrode subassembly is automatic, and the at utmost avoids foreign matters such as dust powder to pile up, keeps the electrode clean.

Drawings

Fig. 1 is a schematic structural view of a sintering furnace.

Fig. 2 is a left side view of the sintering furnace.

Fig. 3 is a sectional view taken along a-a in fig. 2.

Fig. 4 is a partially enlarged view of fig. 3 at M.

Fig. 5 is a partial enlarged view of fig. 4 at E.

Fig. 6 is a partial schematic view of an electrode assembly.

Fig. 7 is a partial schematic view of an electrode flange.

Fig. 8 is a partial enlarged view of fig. 3 at N.

Description of reference numerals:

1. a furnace shell; 2. an electrode body; 3. an electrode flange; 4. cleaning the through hole; 5. a high pressure pipeline; 6. connecting the bosses; 7. an inner connecting rod; 8. an outer connecting rod; 9. locking the nut; 10. a seal ring; 11. a mounting table; 12. a gasket; 13. an electrode mounting hole; 14. a flow guide step; 15. An insulator; 16. a gas-guide hole; 17. a first gap; 18. a second gap; 19. a bottom wall; 20. a side wall.

Detailed Description

The present invention is described in further detail below with reference to fig. 1-8.

A sintering furnace electrode component convenient to clean, wherein the sintering furnace comprises a furnace shell 1, and the electrode component penetrates through the furnace shell 1 and enters the sintering furnace; the electrode assembly comprises an electrode body 2, an insulator 15 arranged outside the electrode body 2 and an electrode flange 3 arranged outside the insulator 15, wherein the insulator 15 is used for preventing the electrode body 2 from electric leakage and supplying power to the sintering furnace through the electrode body 2; as shown in fig. 7, the electrode flange 3 is provided at a middle portion thereof with an electrode mounting hole 13 for placing the electrode body 2 and the insulator 15 in the axial direction, and as shown in fig. 4, two electrode bodies 2, a lower red copper electrode and an upper graphite electrode, are provided in the electrode mounting hole 13 in the S direction (i.e., the direction from the outside of the furnace shell 1 toward the inside of the furnace shell), respectively, and power is supplied to the sintering furnace through the two electrode bodies 2.

As shown in fig. 5, a first gap 17 is formed between the electrode flange 3 and the insulator 15, and a second gap 18 is formed between the electrode body 2 and the insulator 15, so that dust, powder or other foreign matters are easily accumulated in the first gap 17 and the second gap 18 during long-term use of the sintering furnace, and therefore the foreign matters need to be cleaned; a cleaning through hole 4 communicated with the first gap 17 and the second gap 18 is formed in the electrode flange 3, and dust, powder or other foreign matters in the first gap 17 and the second gap 18 can be cleaned by introducing high-pressure inert gas into the cleaning through hole 4; the cleaning through hole 4 in this embodiment is a circular through hole structure with an inner diameter of 3mm-8mm, and the inner diameter thereof is preferably 5mm, and those skilled in the art can also set cleaning through holes 4 with other inner diameter sizes or shapes according to actual requirements.

As shown in fig. 5, a flow guiding step 14 for guiding the high-pressure inert gas is arranged at the communication position of the electrode mounting hole 13 and the cleaning through hole 4, the flow guiding step 14 is arranged on the hole wall at the lower part of the communication position of the electrode mounting hole 13 and the cleaning through hole 4, and the flow guiding step 14 is of a concave annular structure embedded in the hole wall of the electrode mounting hole 13; because the first gap 17 and the second gap 18 between the cleaning through hole 4 and the furnace are long and close to the furnace, a large amount of foreign matters such as dust and powder are easy to accumulate in the first gap 17 and the second gap 18 between the cleaning through hole 4 and the furnace, and the flow guide step 14 can improve the uniformity of gas flow and assist the gas to flow upwards along the S direction (i.e. flow towards the direction in the furnace) so as to clean the foreign matters in the first gap 17; the gas flow direction of the high-pressure inert gas is specifically shown as arrows z1, z2 and z3 in fig. 5, the high-pressure gas flows into the cleaning through hole 4 along the z1 direction, then flows into the first gap 17 and the second gap 18 from the cleaning through hole 4, and the high-pressure inert gas flows in the first gap 17 and the second gap 18 respectively along the z2 direction and the z3 direction; the flow guiding step 14 comprises a bottom wall 19 and a side wall 20, the side wall 20 is of a conical structure with the inner diameter gradually reduced from bottom to top, and the side wall 20 of the conical structure can assist high-pressure air flow to uniformly flow upwards in the gap one 17 around the insulator 15 and clean foreign matters in the gap one 17; the angle β between the side wall 20 and the bottom wall 19 is: 50 < beta < 80 deg. to direct the flow of air through the side wall 20 in a suitable tapering range and to ensure a uniform upward flow of air, beta in this embodiment preferably being 70 deg..

As shown in fig. 5 and 6, the insulator 15 is provided with a gas guide hole 16 communicated with the cleaning through hole 4, high-pressure inert gas is introduced through the gas guide hole 16 and foreign matters in the gap two 18 are cleaned, and the gas guide hole 16 is positioned in the middle of the insulator 15 corresponding to the cleaning through hole 4, so that the high-pressure inert gas sprayed from the cleaning through hole 4 can uniformly flow into the gas guide hole 16; the gas guide holes 16 comprise a plurality of gas guide holes uniformly arranged in the circumferential direction of the insulator 15, so that high-pressure inert gas in the first gap 17 can also flow into the second gap 18 from the gas guide holes 16, and the cleaning efficiency in the second gap 18 is improved.

As shown in fig. 7, a connecting boss 6 is provided on the outer end surface of the electrode flange 3 corresponding to the cleaning through hole 4, the cleaning through hole 4 extends into the connecting boss 6, and an external high-pressure pipe 5 is communicated with the connecting boss 6; high-pressure inert gas is sprayed into the cleaning through hole 4 from the connecting boss 6 through an external high-pressure pipeline 5; the connecting boss 6 can improve the stability and the sealing performance of the connection between the high-pressure pipeline 5 and the electrode flange 3; as shown in fig. 8, the high-pressure pipeline 5 is firmly connected with the cleaning through hole 4 through a sealing fastening head; the sealing fastening head is of a double-head communication structure and specifically comprises an inner connecting part communicated with the connecting boss 6 and an outer connecting part communicated with the high-pressure pipeline 5; the inner connecting part is connected from outside to inside and fastened in the cleaning through hole 4 of the connecting boss 6, the connecting boss 6 is provided with a first internal thread, the inner connecting part comprises an inner connecting rod 7, the inner connecting rod 7 is provided with a first external thread matched with the first internal thread, and the sealing fastening head is fastened in the cleaning through hole 4 at the connecting boss 6 through the inner connecting rod 7 in a threaded manner; the outer connecting part is sleeved and fastened on the outer peripheral surface of the high-pressure pipeline 5, the outer connecting part comprises an outer connecting rod 8 and a locking nut 9 capable of locking the outer connecting rod 8 on the outer peripheral surface of the high-pressure pipeline 5, the locking nut 9 is sleeved on the outer side of the high-pressure pipeline 5, the locking nut 9 comprises an internal thread II, the outer connecting rod 8 comprises an external thread II in threaded fit with the internal thread II in the locking nut 9, and the outer connecting rod 8 is sleeved on the high-pressure pipeline 5 and locked in the locking nut 9 in a threaded manner; the locking nut 9 is also internally provided with a sealing ring 10 positioned on the outer side of the outer end of the outer connecting rod 8, the sealing ring 10 is of a conical sealing iron ring structure, and when the locking nut 9 is screwed on the outer connecting rod 8, the locking nut 9 can clamp the sealing ring 10 and can be fastened and sealed through the sealing ring 10; an installation platform 11 for installing a sealing fastening head is also arranged between the inner connecting rod 7 and the outer connecting rod 8; be equipped with sealed 12 of filling up between mount table 11 and the connection boss 6, sealed 12 of filling up in this embodiment is the copper sealed structure of filling up, after interior connecting rod 7 installed to clean through-hole 4 in, seals up through sealed 12, prevents that gas from revealing.

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 sintering furnace electrode assembly convenient to clean, characterized in that the electrode assembly comprises an electrode body (2), an insulator (15) arranged outside the electrode body (2), and an electrode flange (3) arranged outside the insulator (15); a first gap (17) is formed between the electrode flange (3) and the insulator (15), and a second gap (18) is formed between the electrode body (2) and the insulator (15); and a cleaning through hole (4) communicated with the first gap (17) and the second gap (18) is formed in the electrode flange (3), and dust, powder or other foreign matters in the first gap (17) and the second gap (18) can be cleaned by introducing high-pressure inert gas into the cleaning through hole (4).

2. Sintering furnace electrode assembly convenient for cleaning according to claim 1, characterized in that the insulator (15) is provided with a gas guide hole (16) communicated with the cleaning through hole (4), and high pressure inert gas is introduced through the gas guide hole (16) to clean foreign matters in the second gap (18).

3. Sintering furnace electrode assembly facilitating cleaning according to claim 2, characterized in that the gas guiding hole (16) is located in the middle of the insulator (15) corresponding to the cleaning through hole (4); the air holes (16) comprise a plurality of air holes which are uniformly arranged in the circumferential direction of the insulator (15).

4. A sintering furnace electrode assembly convenient for cleaning according to any one of claims 1-3, characterized in that the middle of the electrode flange (3) is provided with an electrode mounting hole (13) for mounting the electrode body (2) and the insulator (15) along the axial direction, and a flow guiding step (14) for guiding high-pressure inert gas is arranged in the electrode mounting hole (13) and is communicated with the cleaning through hole (4).

5. Sintering furnace electrode assembly for easy cleaning according to claim 4, characterized in that the flow guiding step (14) is provided on the wall of the hole at the lower part where the electrode mounting hole (13) communicates with the cleaning through hole (4).

6. Sintering furnace electrode assembly facilitating cleaning according to claim 5, characterized in that the flow guiding step (14) is a concave ring structure embedded in the wall of the electrode mounting hole (13).

7. Sintering furnace electrode assembly facilitating cleaning according to claim 6, characterized in that the flow guiding step (14) comprises a bottom wall (19) and side walls (20), the side walls (20) are of a tapered structure with a gradually decreasing inner diameter from bottom to top, and the side walls (20) of the tapered structure assist the high-pressure gas flow to uniformly flow upwards in the gap one (17) around the insulator (15) and clean foreign matters in the gap one (17).

8. Sintering furnace electrode assembly facilitating cleaning according to claim 7, characterized in that the angle β between the side wall (20) and the bottom wall (19) is: beta is more than 50 degrees and less than 80 degrees.

9. Sintering furnace electrode assembly facilitating cleaning according to claim 8, characterized in that the cleaning through hole (4) is a circular through hole structure with an inner diameter between 3mm and 8 mm.

10. Sintering furnace electrode assembly convenient for cleaning according to claim 9, characterized in that the outer end face of the electrode flange (3) is provided with a connection boss (6) corresponding to the cleaning through hole (4), the cleaning through hole (4) extends into the connection boss (6) and is communicated with an external high pressure pipe (5) at the connection boss (6); high-pressure inert gas is sprayed into the cleaning through hole (4) from the connecting boss (6) through an external high-pressure pipeline (5).