CN202182620U - Tunnel kiln structure for sintering electronic product - Google Patents

Abstract

The utility model relates to a tunnel kiln structure for sintering an electronic product and belongs to the technical field of a firing kiln for the electronic product. The tunnel kiln structure comprises a kiln body bracket, a kiln body and a group of flue gas exhaust chimneys, wherein the kiln body is arranged on the kiln body bracket and is provided with a furnace; a group of flue gas exhaust ports which are communicated with the furnace and are used for leading out flue gas containing glue in the furnace are arranged at the top of the kiln body along the length direction of the kiln body at intervals; and the flue gas exhaust chimneys correspond to the positions of the corresponding flue gas exhaust ports and are fixed on the kiln body. The tunnel kiln structure is characterized in that a heating mechanism for preventing the glue in the flue gas from being adhered and solidified onto the inner wall of the corresponding flue gas exhaust chimney is arranged in each flue gas exhaust chimney respectively; a glue-containing flue gas leading-out and glue collecting mechanism which is used for leading out the flue gas containing the glue from the flue gas exhaust chimneys in a centralized mode and simultaneously collecting the glue in the flue gas containing the glue is arranged on the outer wall of the kiln body along the length direction of the kiln body; and the glue-containing flue gas leading-out and glue collecting mechanism is connected with the heating mechanism. The tunnel kiln structure has the advantages that the firing efficiency is improved, the requirement on industrial amplification production is met, the labor intensity of workers is reduced, and the energy is saved.

Description

Electronic product sintering tunnel cave structure

Technical field

The utility model belongs to electronic product burning kiln technical field, is specifically related to a kind of electronic product sintering tunnel cave structure

Background technology

above mentioned electronic product is main but be not limited to following kind of giving an example: ceramic inductance substrate, ceramic dielectric substrate, LiFePO 4 powder and all kinds of use for electronic products powder, or the like.The common employing batch-type furnace that burns till of the powder body material of this electronic product and use for electronic products burns till; The strong point that the van-type stove burns till is: the colloid of from the powder body material of the electronic product that is sintered and/or use for electronic products, discharging can not turn back to electronic product and/or powder body material; Because whenever burn till once just once to the inwall cleaning of van-type stove burner hearth; The glue dirt that to concentrate and be set on the inwall is removed, and avoids when burning till because of glue dirt fusion next time and drop down dripping a quality that influences product.But employing van-type stove burns till above-mentioned electronic product or there is following technical problem in the use for electronic products powder body material: the one, burn till inefficiency, and be difficult to satisfy the industrial amplification production requirement; The 2nd, working strength of workers is big, because whenever burn till once, needs by the workman van-type stove to be carried out aforesaid cleaning; The 3rd, be unfavorable for energy savings, because when the van-type stove is cleaned, need in advance it to be cooled to normal temperature.

adopt tunnel cave to burn till; Then can remedy aforesaid 3 technical problems; But, because the jelly of from electronic product or use for electronic products powder body material, overflowing is at the inwall that in the process that the chimney of tunnel cave is discharged, can be attached to chimney with flue gas, when tunnel cave is in when quitting work state; So before the jelly attached to inner wall of stack solidified because of cooling, and stiffly formed the glue dirt at inner wall of stack.And when tunnel cave was launched once more, then molten drop took place in the glue dirt under the effect of high-temperature flue gas, and the jelly of molten drop can drop down with inner wall of stack and drop down onto the electronic product that is arranged in burner hearth or the powder body material of use for electronic products, pollutes, and even causes product rejection.

can be known through above-mentioned explanation to tunnel cave, and adopting the electronic product and the material of van-type stove sintering aforementioned type is the selection that industry is done something against one's will, only if the structure of tunnel cave is improved, the chimney of stopping tunnel cave drips glue.Yet, in disclosed patent and non-patent literature, all be not seen in up to now tunnel cave improved and uses and avoid chimney to drip the teachings of glue.For this reason, the applicant has done actively and good try, and the technical scheme that will introduce below produces under this background

Summary of the invention

The task of the utility model is to provide a kind of chimney of can stopping effectively to drip glue and use to embody to improve and burn till efficient and satisfy the electronic product sintering tunnel cave structure that the industrialization volume production requires, alleviates labor strength and energy savings.

The task of the utility model is accomplished like this, and a kind of electronic product sintering tunnel cave structure comprises a kiln body support frame; Be arranged on the kiln body on the kiln body support frame, the top of this kiln body and be provided with being used for of communicating with burner hearth with the one group of exhaust smoke outlet that the glue flue gas is drawn that contains in the burner hearth along the length direction of kiln body is spaced apart with burner hearth; Position and one group of fixing smoke discharging chimney of kiln body corresponding to each exhaust smoke outlet are characterised in that: in described one group of smoke discharging chimney, respectively be provided with one and be used for preventing that the jelly of flue gas from adhering to and freezing solidly on the heating arrangements of the inwall of smoke discharging chimney; On the outer wall of kiln body and be provided with one along the length direction of kiln body and be used for the glue fume centralized that contains that comes from said smoke discharging chimney is drawn the glue flue gas that contains that the jelly that will contain the glue flue gas simultaneously collects and drawn the collection gluing mechanism, this contains the glue flue gas and draws the collection gluing mechanism and be connected with described heating arrangements.

are in one of the utility model concrete embodiment; Described heating arrangements comprises outer sleeve, electrical heating wire, plural number piece heat block and inner sleeve; Outer sleeve is arranged in the said smoke discharging chimney, and inner sleeve places in the outer sleeve, and fixes at position and said kiln body corresponding to said exhaust smoke outlet; Plural number piece electrical heating piece is between the inwall of the outer wall of inner sleeve and outer sleeve; And the separate space around between the inwall of the outer wall of inner sleeve and outer sleeve encloses the structure that builds up cylinder, on each electrical heating piece, offers the electrical heating wire through hole, and electrical heating wire is following the electrical heating wire through hole and wearing; And the pair of electrical heater strip power connector end of electrical heating wire is connected with a pair of power-line terminal on being arranged on outer sleeve; Be connected with the externally fed power supply and a pair of power-line terminal leans out the wall body of said smoke discharging chimney, the top of described inner sleeve is connected with one and draws cylindrical shell, and this top of drawing cylindrical shell is sealed by valve gap; And connected a breather pipe on the cylindrical shell drawing, this breather pipe is drawn the collection gluing mechanism and is connected with the described glue flue gas that contains.

in another concrete embodiment of the utility model, described electrical heating piece is the refractory ceramics piece.

are in another concrete embodiment of the utility model; The short transverse of described outer sleeve constitutes an outer sleeve port, on this outer sleeve port, is equipped with at least one pair of and is used for the outer sleeve port closing device that the outer sleeve port is closed.

are in another concrete embodiment of the utility model; Described outer sleeve port closing device comprises first, second holder and set bolt; First holder is fixed on said outer sleeve, and is positioned at a side of outer sleeve port, and second holder is fixed on the outer sleeve equally; And be positioned at the opposite side of outer sleeve port; Corresponding with first holder, set bolt is located on first holder and second holder, makes said outer sleeve port closed by this set bolt closes up first, second holder each other.

also have among the concrete embodiment the utility model, are connected with one on the cylindrical shell and are used to predict the thermocouple of drawing the temperature that contains the glue flue gas in the cylinder chamber of drawing cylindrical shell described drawing.

are at more and among concrete embodiment of the utility model; The described glue flue gas that contains is drawn the jelly gathering-device that the collection gluing mechanism comprises that motor, blower fan, collection fume pipe and one group of quantity equate with institute smoke discharging chimney; Motor and blower fan connect, and are fixed on the top of fan supporter by blower fan together with motor, and fan supporter is supported on the terrace; Collecting fume pipe arranges along the length direction of said kiln body; And fix with the kiln body, an end of this collection fume pipe and the air inlet of said blower fan connect, and the other end end of collection fume pipe is by closure; The jelly gathering-device is connected with the collection fume pipe, and described breather pipe is connected with the jelly gathering-device.

the utility model so that concrete embodiment in; Described jelly gathering-device comprises glue flue gas cylinder, collection glue jar and valve; The upper end of glue flue gas cylinder is connected with the collection fume pipe and with the collection fume pipe tube chamber that collects fume pipe; The lower end of glue flue gas cylinder is connected with the arrival end of valve, and the port of export of collection glue jar and valve connects, and described breather pipe is connected with glue flue gas cylinder.

are at again more and among concrete embodiment of the utility model; Be connected with an interface on the described collection fume pipe and at position corresponding to said glue flue gas cylinder; This interface has a flange; And glue flue gas cylinder constitutes a glue flue gas cylinder adapting flange towards an end of said flange, and this glue flue gas cylinder adapting flange and said flange connect.

at again and then among concrete embodiment of the utility model, described valve is a Ball valve.

The technical scheme that the utility model provides is owing to be arranged on heating arrangements in the smoke discharging chimney; And on the kiln body, set the glue flue gas that contains that is connected with heating arrangements and drawn the collection gluing mechanism; Therefore jelly in the glue flue gas can not occur containing returns and drops down on the powder body material that is in electronic product or use for electronic products in the sintering process that drips to the burner hearth; Both can improve and burn till efficient and satisfy the industrial amplification production requirement; Implement artificial cleaning the prior art and help to alleviate working strength of workers because of need not to resemble again, and owing to tunnel cave can realize that continuous operation helps energy savings.

Description of drawings

Fig. 1 is the example structure figure of the utility model.

Fig. 2 is the cutaway view of Fig. 1.

Fig. 3 is the detailed structure view that heats the binder removal chimney certainly of the utility model.

Fig. 4 is the sketch map that the glue flue gas is drawn the jelly gathering-device of collection gluing mechanism that contains of the utility model.

The specific embodiment

can be expressly understood the technical spirit and the beneficial effect of the utility model more for the auditor that the makes Patent Office especially public; The applicant general elaborates with the mode of embodiment below; But the description to embodiment all is not the restriction to the utility model scheme, any according to the utility model design done only for pro forma but not substantial equivalent transformation all should be regarded as the technical scheme category of the utility model.

Fig. 1 and Fig. 2 are asked for an interview in ; Provided one and do not needed kiln body support frame 1 particular determination and that be preferably frame structure at length direction; On kiln body support frame 1 and along the top (also can claim the top) of the length direction of kiln body support frame 1, be provided with kiln body 2; Kiln body 2 has burner hearth 21; The electronic product that is used for sintering for example ceramic inductance substrate, ceramic dielectric substrate, LiFePO 4 powder or other powder that similarly is used to make electronic product (electronic devices and components) container of packing into is for example inserted burner hearth 21 and under the effect of top-pushing mechanism that is equipped with separately or haulage gear, crucible or carrier is low got into until drawing from the port of export from the arrival end of burner hearth 21 behind crucible or the carrier.In sintering process, the exhaust smoke outlet 22 that the glue flue gas offers from kiln body 2 tops at interval that contains that produces in the burner hearth 21 is discharged.Why contain jelly in the flue gas; Be because electronic product for example exist successively in the production of ceramic inductance substrate get the raw materials ready, series of processes such as batching, batch mixing, pressed compact, sintering; And needs use the material such as EVA (ethylene-vinyl acetate copolymer), solvent and/or adhesive in the batch mixing process; Thereby in high-temperature sintering process, jelly and/or solvent are just overflowed, and efflux from exhaust smoke outlet 22.

In prior art, directly at the position corresponding to exhaust smoke outlet 22 smoke discharging chimney 3 is set, the technical scheme that the utility model provides then is provided with heating arrangements 4 in each smoke discharging chimney 3.

are asked for an interview Fig. 3, Fig. 4 and are continued to combine Fig. 1 and Fig. 2; Preferably but not the heating arrangements 4 that definitely is limited to comprises inner and outer sleeves 44,41, electrical heating wire 42 and plural number piece (also can claim one group) electrical heating piece 43; Outer sleeve 41 is arranged in the smoke discharging chimney 3 (Fig. 1 and Fig. 4 show); Inner sleeve 44 places in the outer sleeve 41, and this inner sleeve 44 is fixing at position and kiln body 2 corresponding to aforesaid exhaust smoke outlet 22.By Fig. 1 and shown in Figure 4; The outer wall of the bottom of inner sleeve 44 constitutes an inner sleeve mounting flange 442; This inner sleeve mounting flange 442 is fixing with kiln body 2; And corresponding with exhaust smoke outlet 22, the top of inner sleeve 44 connect a diameter than the diameter of inner sleeve 44 little draw cylindrical shell 441, valve gap 4411 sealings are adopted at this top of drawing cylindrical shell 441; And connected a breather pipe 4412 at the sidepiece of drawing cylindrical shell 441, this breather pipe 4412 with following also to describe in detail contain the glue flue gas draw the collection gluing mechanism 5 be connected.For the ease of examining the knowledge flue-gas temperature, therefore also connected thermocouple 4413 on the cylindrical shell 441 drawing.Plural number piece electrical heating piece 43 and is in the bottom of separate space in inner and outer sleeves 44, the separate space reserved between 41.That is to say that electrical heating piece 43 is enclosed to form the structure (Fig. 3 shows) of cylinder around the separate space between the inwall of the outer wall of inner sleeve 44 and outer sleeve 41.Detailed signal through Fig. 3 can be known; Electrical heating piece 43 is just as the wall body structure of the cylinder in the building field; On each electrical heating piece 43, laterally offer the electrical heating wire through hole 431 that the heater strip 42 that is used to supply power passes; Electrical heating wire 42 following (along) electrical heating wire through hole 431 wears with the form of spiraling; And to be pair of electrical heater strip link be connected with a pair of power-line terminal 411 on being arranged on outer sleeve 41 end points at the two ends of electrical heating wire 42 (end), is connected with the externally fed power supply and a pair of power-line terminal 411 leans out the wall body of aforesaid smoke discharging chimney 3.Can fill heat-insulation layer 413 in the space between the inwall of the outer sleeve 41 of heating arrangements 4 and smoke discharging chimney 3, and heat-insulation layer 413 extends in the space between the inwall of outer wall and smoke discharging chimney 3 on top of inner sleeve 44 (Fig. 4 shows).The aforesaid cylindrical shell 441 of drawing is fixing with smoke discharging chimney 3 through drawing shell flange 4414.

are according to general knowledge; Need there be outer sleeve port 412 in outer sleeve 41; If because lack this outer sleeve port 412, so aforesaidly by wearing of electrical heating wire 42 electrical heating piece 43 is connected as a whole cylindrical body and be difficult to and outer sleeve 41 good fit, be prone to the phenomenon that gets loose; Therefore after electrical heating wire 42 and electrical heating piece 43 wear completion and place in the outer sleeve 41; Pass through outer sleeve port closing device 6 again with outer sleeve port 412 closures, make port 432 closures of electrical heating piece 43 simultaneously, thereby make plural number piece electrical heating piece 43 and outer sleeve 41 form complete cylindrical body.Aforesaid electrical heating piece 43 is the refractory ceramics piece.By shown in Figure 3, be in electrical heating piece 43 topmost and foot and limit the bending part 414 (also can claim positioning tooth) at outer cylinder body 41 two ends.

emphasis is seen Fig. 3; Aforesaid outer sleeve port closing device 6 has a pair of; Comprise that respectively first, second holder 61,62 and set bolt 63, the first holders 61 are fixing with outer sleeve 41, and be positioned at a side (left side shown in Figure 3) of outer sleeve port 412; Fix with outer sleeve 41 and second holder 62 is same; And be positioned at the opposite side (right side shown in Figure 3) of outer sleeve port 412, first, second holder 61,62 corresponds to each other, and on first holder 61, offers first bolt hole 611; And on second holder 62, offer second bolt hole 621; First, second bolt hole 611,621 corresponds to each other, and set bolt 63 limits with nut 631 through second bolt hole 621 and after passing first bolt hole 611, and perhaps set bolt 63 limits with nut 631 after passing first, second bolt hole 611,621 successively again.Along with turn nut 631, under the effect of set bolt 63, first, second holder 61,62 is closed up each other, the outer sleeve port 412 that finally makes sleeve 41 closes up together with the port 432 of the electrical heating piece 43 that is equipped with electrical heating wire 42.

emphasis is seen Fig. 1 and Fig. 2; Once the glue flue gas of mentioning above that contains is drawn collection gluing mechanism 5 and is comprised motor 51, blower fan 52, collection fume pipe 53 and jelly gathering-device 54; Motor 51 connects (genus common practise) with blower fan 52 transmissions; And be fixed on the top of fan supporter 521 by blower fan 52 together with motor 51, and the bottom supporting of fan supporter 521 is on the terrace of field of employment, certainly; Can fan supporter 521 and aforesaid kiln body support frame 1 be fixed fully; Collect fume pipe 53 and lay, and preferably corresponding to the top side portion (the inclined to one side side in the top of kiln body 2) of kiln body 2 along the length direction of kiln body 2, use avoid and aforesaid smoke discharging chimney 3 between produce interference.One end (left end of Fig. 1, location status shown in Figure 2) of collection fume pipe 53 connects with blower fan 52 air inlets 522, and the other end end of collection fume pipe 53 is by capping 534 sealings (Fig. 2 shows).The fan outlet of aforementioned blower fan 52 is connected (not shown) with the pipeline that connects separately.The whole fume pipe 53 that collects is through fixing with kiln body 2 or with kiln body support frame 1 fixing support of duct 533.Promptly collect on the fume pipe 53 towards a side of jelly gathering-device 54 at collection fume pipe 53 and to receive interface 532 that a quantity equates with the quantity of jelly gathering-device 54 and that communicate with the collection fume pipe tube chamber 531 that collects fume pipe 53 with jelly gathering-device 54 corresponding positions; End at interface 532 constitutes a flange 5321, and whole jelly gathering-device 54 is fixedly connected with flange 5321 with cantilever position.

preferred jelly gathering-device 54 comprises glue flue gas cylinder 541, collection glue jar 542 and valve 543; The upper end of glue flue gas cylinder 541 promptly constitutes a glue flue gas cylinder adapting flange 5411 towards an end of flange 5321; This glue flue gas cylinder adapting flange 5411 connects (adding sealing gasket) with 5321 sealings of aforementioned interface flange, and the lower end of glue flue gas cylinder 541 promptly is connected with the arrival end of valve 543 (upper end of valve 543) flange towards an end of valve 543.Collection glue jar 542 towards the end (illustrated upper end) of valve 543 constitute one have a screw thread connector 5421, the port of export screw thread that will collect glue jar 542 and valve 543 by this connector 5421 with screw thread connects valve 543 preferred use Ball valves.Aforesaid breather pipe 4412 is connected with glue flue gas cylinder 541.

when kiln body 2 was in running order, containing the glue flue gas, to draw the motor 51 of collection gluing mechanism 5 also in running order, the electrical heating wire 41 energising heating of heating arrangements 4; The glue flue gas that contains that comes from burner hearth 21 gets into smoke discharging chimney 3 through exhaust smoke outlet 22; Specifically: cylindrical shell 441 is drawn in inner sleeve 44 entering through heating arrangements 4, and owing to the collection fume pipe tube chamber 531 that collects fume pipe 53 is in negative pressure state, the glue flue gases that contain of therefore drawing in the cylindrical shell 441 collect fume pipe tube chambers 531 through breather pipe 4412 entering; And then the glue flue gas cylinder 541 of entering jelly gathering-device 54; Because glue is different with the proportion of gas, and under the situation that temperature reduces, flue gas gets into collection fume pipe tube chamber 531; The jelly then valve under opening 543 drops down and drips, and gets in the collection glue jar 542.

Can know that by above-mentioned explanation the technical scheme that the utility model provides has overcome 3 shortcomings in the prior art, has objectively reached goal of the invention, has embodied the described technique effect of applicant, thereby to can yet be regarded as be a ultimate attainment technical scheme

Claims (10)

1. an electronic product sintering tunnel cave structure comprises a kiln body support frame (1); Be arranged on the kiln body (2) on the kiln body support frame (1), the top of this kiln body (2) and be provided with being used for of communicating with burner hearth (21) with the one group of exhaust smoke outlet (22) that the glue flue gas is drawn that contains in the burner hearth (21) along the length direction of kiln body (2) is spaced apart with burner hearth (21); Position and the fixing one group of smoke discharging chimney (3) of kiln body (2) corresponding to each exhaust smoke outlet (22) is characterized in that: in described one group of smoke discharging chimney (3), respectively be provided with one and be used for preventing that the jelly of flue gas from adhering to and freezing solidly on the heating arrangements (4) of the inwall of smoke discharging chimney (3); On the outer wall of kiln body (2) and be provided with one along the length direction of kiln body (2) and be used for the glue fume centralized that contains that comes from said smoke discharging chimney (3) is drawn the glue flue gas that contains that the jelly that will contain the glue flue gas simultaneously collects and drawn collection gluing mechanism (5), this contains the glue flue gas and draws collection gluing mechanism (5) and be connected with described heating arrangements (4).

2. electronic product sintering tunnel cave structure according to claim 1; It is characterized in that described heating arrangements (4) comprises outer sleeve (41), electrical heating wire (42), plural number piece heat block (43) and inner sleeve (44); Outer sleeve (44) is arranged in the said smoke discharging chimney (3); Inner sleeve (44) places in the outer sleeve (41); And fixing corresponding to the position of said exhaust smoke outlet (22) and said kiln body (2), between the outer wall that plural number piece electrical heating piece (43) is positioned at inner sleeve (44) and the inwall of outer sleeve (41), and the separate space that centers between the inwall of outer wall and outer sleeve (41) of inner sleeve (44) encloses the structure that builds up cylinder; On each electrical heating piece (43), offer electrical heating wire through hole (431); Electrical heating wire (42) is following electrical heating wire through hole (431) and is wearing, and the pair of electrical heater strip power connector end of electrical heating wire (42) is connected with a pair of power-line terminal (411) on being arranged on outer sleeve (41), is connected with the externally fed power supply and a pair of power-line terminal (411) leans out the wall body of said smoke discharging chimney (3); The top of described inner sleeve (44) is connected with one and draws cylindrical shell (441); This top of drawing cylindrical shell (441) is by valve gap (4411) sealing, and connected a breather pipe (4412) on the cylindrical shell (441) drawing, and this breather pipe (4412) is drawn and collected gluing mechanism (5) and be connected with the described glue flue gas that contains.

3. electronic product sintering tunnel cave structure according to claim 2 is characterized in that described electrical heating piece (43) is the refractory ceramics piece.

4. electronic product sintering tunnel cave structure according to claim 2; The short transverse that it is characterized in that described outer sleeve (41) constitutes an outer sleeve port (412), on this outer sleeve port (412), is equipped with at least one pair of and is used for the outer sleeve port closing device (6) that outer sleeve port (412) is closed.

5. electronic product sintering tunnel cave structure according to claim 4; It is characterized in that described outer sleeve port closing device (6) comprises first, second holder (61,62) and set bolt (63); First holder (61) is fixed on said outer sleeve (41); And be positioned at a side of outer sleeve port (412); Second holder (62) is fixed on the outer sleeve (41) equally, and is positioned at the opposite side of outer sleeve port (412), and is corresponding with first holder (61); Set bolt (63) is located on first holder (61) and second holder (62), makes said outer sleeve port (412) closure by this set bolt (63) closes up first, second holder (61,62) each other.

6. electronic product sintering tunnel cave structure according to claim 2 is characterized in that being connected with one on the cylindrical shell (441) and being used to predict the thermocouple (4413) of drawing the temperature that contains the glue flue gas in the cylinder chamber of drawing cylindrical shell (441) described drawing.

7. electronic product sintering tunnel cave structure according to claim 2; It is characterized in that the described glue flue gas that contains draws collection gluing mechanism (5) and comprise motor (51), blower fan (52), collection fume pipe (53) and one group of jelly gathering-device (54) that quantity equates with institute's smoke discharging chimney (3); Motor (51) connects with blower fan (52); And be fixed on the top of fan supporter (521) together with motor (51) by blower fan (52); And fan supporter (521) is supported on the terrace, collect fume pipe (53) and arrange along the length direction of said kiln body (2), and fixing with kiln body (2); The air inlet (522) of one end of this collection fume pipe (53) and said blower fan (52) connects; And the other end end of collection fume pipe (53) is sealed by capping (534), and jelly gathering-device (54) is connected with collection fume pipe (53), and described breather pipe (4412) is connected with jelly gathering-device (54).

8. electronic product sintering tunnel cave structure according to claim 7; It is characterized in that described jelly gathering-device (54) comprises glue flue gas cylinder (541), collection glue jar (542) and valve (543); The upper end of glue flue gas cylinder (541) is connected with collection fume pipe (53) and with the collection fume pipe tube chamber (531) that collects fume pipe (53); The lower end of glue flue gas cylinder (541) is connected with the arrival end of valve (543); Collection glue jar (542) connects with the port of export of valve (543), and described breather pipe (4412) is connected with glue flue gas cylinder (541).

9. electronic product sintering tunnel cave structure according to claim 8; It is characterized in that described collection fume pipe (53) upward and at the position corresponding to said glue flue gas cylinder (541) is connected with an interface (532); This interface (532) has a flange (5321); And glue flue gas cylinder (541) constitutes a glue flue gas cylinder adapting flange (5411) towards an end of said flange (5321), and this glue flue gas cylinder adapting flange (5411) connects with said flange (5321).

10. electronic product sintering tunnel cave structure according to claim 8 is characterized in that described valve (543) is a Ball valve.

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