CN109724401A - A kind of continuous tunnel furnace - Google Patents
A kind of continuous tunnel furnace Download PDFInfo
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- CN109724401A CN109724401A CN201711051524.3A CN201711051524A CN109724401A CN 109724401 A CN109724401 A CN 109724401A CN 201711051524 A CN201711051524 A CN 201711051524A CN 109724401 A CN109724401 A CN 109724401A
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Abstract
A kind of continuous tunnel furnace, including feeder, furnace body section, cooling section, for the continuous tunnel furnace using hydrogen as protective gas or as one of protective gas, the continuous tunnel furnace includes capable of being relatively isolated outside the combustion flue and combustion flue for the combustion flue that workpiece passes through；The continuous tunnel furnace further includes auxiliary burner, the auxiliary burner includes lighting-up tuyere, hydrogen fairlead, discharge line, the opposing end portions of the continuous tunnel furnace are arranged in the auxiliary burner, the pipeline is connected with combustion flue by interconnecting part, the auxiliary burner is provided with control valve whether controlling pipeline connection, the outlet of the hydrogen fairlead is arranged close to the lighting-up tuyere, is conducive to keep combustion flue internal pressure balance in this way.
Description
[technical field]
The invention belongs to equipment technical fields.
[background technique]
Continuous tunnel furnace is widely used in various occasions, such as workpiece welding such as soldering or heat treatment as production equipment, by
It is higher in welding or heat treatment temperature, so be to prevent the workpiece into continuous tunnel furnace from aoxidizing, it generally can be using hydrogen etc. as guarantor
Gas is protected, to protect workpiece.
[summary of the invention]
Technical solution of the present invention is designed to provide one kind using hydrogen as protective gas or as one of protective gas
Continuous tunnel furnace, thus the following technical schemes are provided:
A kind of continuous tunnel furnace, including feeder, furnace body section, cooling section, the continuous tunnel furnace using hydrogen as protective gas or
As one of protective gas, the continuous tunnel furnace include can for the combustion flue that workpiece passes through, outside the combustion flue and combustion flue it is opposite every
From；The continuous tunnel furnace further includes auxiliary burner, and the auxiliary burner includes lighting-up tuyere, hydrogen fairlead, discharge line, institute
The opposing end portions that the continuous tunnel furnace is arranged in auxiliary burner are stated, the pipeline is connected with combustion flue by interconnecting part, described auxiliary
Combustion-supporting burner is provided with control valve whether controlling pipeline connection, and the outlet of the hydrogen fairlead is close to the lighting-up tuyere
Setting.
The continuous tunnel furnace includes at least one turnaround section and at least one height change section, the height change section with it is described
Turnaround section is connected, and corresponding with the height change section, each described height change section at least has a corresponding institute
Turnaround section is stated, the turnaround section includes at least one turning part, and the combustion flue is more than or equal to described in the height of the turnaround section
Combustion flue height of the combustion flue in the furnace body section.
The continuous tunnel furnace at work, open or in connected state, institute by control valve whether controlling pipeline connection
It states auxiliary burner and is in burning working condition, the interconnecting part is located at the relatively close outlet portion one end of the combustion flue.
At work, the hydrogen fairlead is in connected state to the continuous tunnel furnace, and the continuous tunnel furnace at work, controls
Connected state is opened or be in control valve whether the pipeline is connected to, and the auxiliary burner is in burning working condition, institute
It states interconnecting part and is located at the relatively close outlet portion one end of the combustion flue.
The continuous tunnel furnace includes feeder, ascent stage, the second turnaround section, furnace body section, cooling section, the first turnaround section, decline
Section, for the cooling section between the furnace body section and the first turnaround section, the furnace body section is located at second turnaround section and institute
It states between cooling section, the height of the furnace body section is optionally greater than the height of the ascent stage and the second turnaround section, the furnace body section
Height be optionally greater than the height of first turnaround section and descending branch, the height of the furnace body section is higher than the height of the feeder
Degree；The continuous tunnel furnace further includes discharge portion, and the relatively close feeder setting of discharge portion or the discharge portion are opposite
Be located at the front end of the ascent stage close to ascent stage setting or the discharge portion, the continuous tunnel furnace the discharge portion also
It is provided with main burner, the continuous tunnel furnace is additionally provided with the connector for being connected to hydrogen in the cooling section；In the tunnel
The combustion flue direction of road furnace, between the main burner and auxiliary burner, the furnace body section is located at described the connector
Between main burner and the connector.
Auxiliary burner enables hydrogen extra in furnace to burn, at the same can play band come out of the stove it is first in interior exhaust gas and balance furnace
The pressure of tail portion achievees the purpose that reduce gas consumption.
[Detailed description of the invention]
Fig. 1 is a kind of schematic diagram of the first embodiment of continuous tunnel furnace；
Fig. 2 is the schematic diagram of the partial structurtes of furnace shown in Fig. 1；
Fig. 3 is the enlarged diagram of the partial structurtes of furnace shown in Fig. 1；
Fig. 4 is the schematic diagram of the partial structurtes of the continuous tunnel furnace of second embodiment；
Fig. 5 is the schematic diagram of the contour structures of the furnace of 3rd embodiment；
Fig. 6 is the schematic diagram of the height change of the inside of continuous tunnel furnace part shown in Fig. 5；
Fig. 7 is the partial structural diagram of the fourth embodiment of continuous tunnel furnace；
Fig. 8 is a kind of structural schematic diagram of embodiment of the auxiliary burner of continuous tunnel furnace；
Fig. 9 is the partial structural diagram of the another embodiment of continuous tunnel furnace.
[specific embodiment]
It is right with reference to the accompanying drawing in order to make those skilled in the art more fully understand the technical solution of the embodiment of the present invention
Specific embodiment is described in further detail.
In continuous tunnel furnace as workpiece welding such as soldering in use, general one section for requiring to weld is with relatively high temperature
Degree, general welding temperature can be at 600 DEG C or more, so may require that the continuous tunnel furnace of welding can reach the temperature between 600-1150 DEG C
Degree, if any workpiece welding such as need 750-850 DEG C of temperature or even 1000-1150 DEG C of some need of temperature, with specific reference to
It depending on the material and solder of welding, will be different, and make pottery if aluminum alloy materials and copper piece, the welding temperature of stainless steel material
Ceramic material even can be higher；Continuous tunnel furnace as heat treatment the used time, some also can according to heat treatment material and heat treatment purpose and
Need comparative high temperature, such as 500 DEG C or more；Continuous tunnel furnace is therein in this way has one section i.e. furnace body section to need to reach this temperature
Degree, this temperature can be more much higher than the front and rear sides of continuous tunnel furnace, and furnace body section even needs certain length, so that workpiece passes through
Furnace body Duan Shineng, which reaches, is arranged the time required for welding or heat treatment, and realizes corresponding purpose.
Continuous tunnel furnace includes feeder, furnace body section, cooling section, at least one turnaround section, and continuous tunnel furnace further includes and turnaround section phase
Corresponding height change section, the height of the combustion flue of height change section may be approximately equal to the height of the combustion flue of furnace body section, and height becomes
Changing section can be one section, and correspondingly turnaround section is also one, can also be by two parts or a few parts there are also one section of height change section
Composition；In addition height change section is also possible to two sections that are located at furnace body section both sides, and correspondingly turnaround section is also two.Turning
Section includes at least one turning part, and turnaround section has changeover portion in turning part side, and turnaround section has one in the turning part other side
The combustion flue height of section, the section is higher than the combustion flue height of height change section, the combustion flue height of furnace body section, is connected with changeover portion
(or adjoining) is then height change section, and height change section connects (or adjoining) feeder or discharging portion or feeder or goes out
Material portion is set to the end of height change section, and workpiece is realized in turnaround section and turned.The length of the changeover portion of turnaround section and institute
The length for stating the section of turnaround section can be roughly equal, and workpiece more convenient in this way passes through, and both equal fingers here difference does not surpass
Cross 10%；Or the length of the changeover portion of turnaround section is greater than the length of the section of the turnaround section.
First embodiment therein is as shown in Figure 1 and Figure 2, and in terms of the direction of transfer of continuous tunnel furnace, continuous tunnel furnace includes that sequence is arranged
Feeder 11, ascent stage 12, the second turnaround section, furnace body section 15, cooling section 16, the first turnaround section, descending branch 19, wherein first
Turnaround section includes First Transition section 18, the first section 17, and the combustion flue effective height of the first section 17 is relatively high, the second turnaround section
Including the second relatively high section 14 of the second changeover portion 13, combustion flue effective height, wherein there is one section of i.e. needs of furnace body section 15 to reach
Temperature required for being used to weld or be heat-treated etc. to higher temperature, this temperature can be than the front and back two of tunnel furnace body section 15
The temperature of side wants high, and the temperature of several sections than other of certain furnace body section 15 will be higher, and the position phase of the combustion flue 151 of furnace body section 15
Higher position, the present embodiment are correspondingly positioned at for other several sections, feeder 11 is lower than furnace body section 15, and discharging portion is (in figure not
Add icon) lower than furnace body section 15.The wall portion that can be seen that continuous tunnel furnace from the broken section of continuous tunnel furnace includes the furnace to form combustion flue 30
Gallbladder body 31, bottom roller 35, insulating brick 34, ceramic wool 33, Elema 32, combustion flue and 31 outside of internal furnace in internal furnace 31 it is opposite every
From.
Feeder 11 is generally used for placing workpiece (not shown) to be processed, and workpiece takes the ascent stage to by transmission
12, second turnaround section of (or adjoining) of being connected with the ascent stage 12 is sent to by 12 workpiece of ascent stage, here " connected " include
Turnaround section and ascent stage or descending branch are in integral structure or are directly connected to fix, are indirectly connected with the various ways such as fixed,；Workpiece exists
Second turnaround section is sent to the height roughly the same with furnace body section 15, and the second turnaround section includes a second turning part B, and second
The side of turning part B, that is, relatively close ascent stage 12 part be the second changeover portion 13 in other words turning part B side, that is, it is opposite
The part for connecting the ascent stage 12 is the second changeover portion 13, the other side, that is, relatively close furnace body section 15 part of the second turning part B
It is the second section 14 that for the second section 14, the other side of the second turning part B, which is the opposite part for connecting furnace body section 15, in other words, from
Direction of transfer is seen, can reach furnace body section 15 after the second section 14.When reaching furnace body section, the height of workpiece also accordingly reaches
Relatively high position in process, by furnace body section 15, workpiece reaches the cooling section for being connected or adjoining with furnace body section 15
16, then again to the first turnaround section, similarly, the first turnaround section includes a first turning part A, the side of the first turning part A
The part of i.e. relatively close cooling section 16 is that the side of the first turning part A is to connect cooling section 16 relatively to the first section 17 in other words
Part be the first section 17, the other side, that is, relatively close descending branch 19 part of the first turning part A is First Transition section 18
It is First Transition section 18 that the other side of the first turning part A, which is the part of opposite connection descending branch 19, in other words, by descending branch 19,
Workpiece can reach discharging portion.The height change section of the present embodiment includes ascent stage and descending branch.
The relative orientations arcs such as height are come using the face parallel with the furnace body section of combustion flue as altitude datum face in this specification
Description, as shown in Figure 1；Height generally refers to transmit in other words with the height at the position in combustion flue for placing workpiece
The height of the position of band in other words in combustion flue bottom position height；And the height of combustion flue refers to that workpiece can be used in combustion flue to be led to
The height crossed, in other words in combustion flue from the position of the conveyer belt at place position perpendicular to the upward height of the conveyer belt or oblique
On height, the position in combustion flue from position where bottom is in other words with height perpendicular to the upward height in the bottom or obliquely
Degree.
In addition using hydrogen, as protective gas or protective gas a period of time, continuous tunnel furnace can also include close to continuous tunnel furnace
The discharge portion 10 that feeder 11 is arranged is also set up in other words close to or at the discharge portion 10 of 12 front end of ascent stage in discharge portion 10
There is main burner, is discharged for making to be able to burn herein from the hydrogen entered with respect to central region by discharge portion 10.Flue
Combustion flue opposing seal in body 31, continuous tunnel furnace is provided with the connector of a connection hydrogen in cooling section 16, in tunnel furnaceman
When making, the protective gas of hydrogen or hydrogen and other gases can enter combustion flue by connector, and by combustion flue to two effluents
It is dynamic, to play the purpose of protection workpiece.Under normal circumstances, the extra hydrogen of reduction reaction can pass through in feed inlet end continuous tunnel furnace
Ignition becomes water vapour discharge, and the extra hydrogen in plug for outlet end is just exhausted directly to out, if in relatively close plug for outlet position
Igniting is set, is likely to result in workpiece by sootiness, and influences the appearance of workpiece.
Combustion flue effective height it is relatively high include the second section 14, the first section 17, furnace body section 15, cooling section 16, this
Sample setting can be when using hydrogen, the opposite usage amount for reducing hydrogen.The present embodiment includes two turnaround sections, below with wherein
It is specifically described for the part that one turnaround section and turnaround section are connected with descending branch, cooling section, please join Fig. 3, first turn
Curved segment includes First Transition section 18, the first section 17, First Transition section 18 in the first turning part A toward the side of descending branch 19,
One section 17 in the first turning part A toward the other side of cooling section 16, the combustion flue height gradual change of First Transition section 18, that is, downward
Drop 19 direction of section is gradually reduced to be become larger to the first turning part direction until the combustion flue height h2 with the first section 17 in other words
Identical, the combustion flue height h2 holding of the first section 17 is basically unchanged；The combustion flue height of First Transition section 18 is greater than or is more than or equal to
The combustion flue height h of furnace body section, the combustion flue height h2 of the first section 17 are greater than the combustion flue height h of furnace body section, in other words First Transition
Section 18 combustion flue height be greater than or more than or equal to descending branch 19 combustion flue height h1, in other words remove First Transition section 18 and descending branch
The combustion flue height of First Transition section 18 is greater than the combustion flue height h1 of descending branch 19, the combustion flue of the first section 17 outside 19 handover position
Height h2 is greater than the combustion flue height h1 of descending branch 19, that is to say, that respectively includes two combustion flue height in the two sides of the first turning part A
Relatively high section is spent, even if workpiece is oblique when workpiece is turned in this way will not still rush with the combustion flue inner wall of the turning part two sides A
It is prominent, and the combustion flue height of other sections other than turnaround section can be arranged relatively small, as long as adapting to workpiece height,
Combustion flue height in this way is accordingly lower, and the energy consumption of continuous tunnel furnace can be made relatively fewer, can also be with the time required to continuous tunnel furnace heating
It reduces, realizes the purpose of energy efficiency.Specifically, the ratio between the combustion flue height h of the combustion flue height h2 of the first section 17 and furnace body section
(h2/h) it is more than or equal to 1.3, is suitable for general workpiece in this way, it even can be right more than or equal to 1.5 to the longer workpiece of length
The longer workpiece of length can even be more than or equal to 2, can specifically be adjusted according to Workpiece length.It can make the first section 17 simultaneously
External height H2 be greater than the external height H1 of descending branch 19, the combustion flue height h2 of the first section 17 is greater than the combustion flue of furnace body section 15
Highly.Correspondingly, the structure of the second turnaround section is also referred to the structure of the first turnaround section, no longer repeats here.
Second embodiment is described below, Fig. 4 please be join, Fig. 4 is that the structure of the part of the continuous tunnel furnace of another embodiment is shown
It is intended to, the structural representation of major embodiment turnaround section, similarly turnaround section includes First Transition section 18 ', the first section 17, the first mistake
Section 18 ' is crossed in the first turning part A toward the side of descending branch 19, the first section 17 is in the first turning part A toward the another of cooling section 16
Side, the combustion flue height of First Transition section 18 ' are greater than the combustion flue height h of furnace body section, and the combustion flue height h2 of the first section 17 is greater than furnace
The combustion flue height h of body section, the combustion flue height of First Transition section 18 ' is greater than the combustion flue height h1 of descending branch 19, the firstth area in other words
The combustion flue height h2 of section 17 is greater than the combustion flue height h1 of descending branch 19, that is to say, that respectively includes in the two sides of the first turning part A
The relatively high section of two combustion flue height.The combustion flue height gradual change of First Transition section 18 i.e. to 19 direction of descending branch gradually
Become larger and is become progressively smaller until, first section 17 identical as the combustion flue height h2 of the first section 17 to the first turning part direction in other words
Combustion flue height h2 holding be basically unchanged；In the present embodiment, 17 combustion flue of the roof of the combustion flue of First Transition section 18 ' and the first section
Roof remain basically stable.
3rd embodiment is described below, Fig. 5, Fig. 6 please be join, this is that the another embodiment of continuous tunnel furnace includes turnaround section and decline
The partial structural diagram of section part, specifically a kind of continuous tunnel furnace using hydrogen as protective gas of 3rd embodiment, Huo Zheqing
Gas is as protective gas just like using nitrogen and hydrogen, as protective gas, continuous tunnel furnace can be used for welding or being heat-treated etc..Furnace
Combustion flue 30 in gallbladder body 31, which is arranged and realizes with 31 outside opposing seal of internal furnace, is isolated, i.e., be outside combustion flue and combustion flue it is opposite every
From, have hydrogen as protective gas in combustion flue 30.Similarly turnaround section includes First Transition section 18 ", the first section 17 ',
First Transition section 18 " is in the first turning part A toward the side of descending branch 19, and the first section 17 ' is in the first turning part A toward cooling section 16
The other side, the combustion flue height of First Transition section 18 " is greater than the combustion flue height h, the combustion flue height h2 of the first section 17 ' of furnace body section
Greater than the combustion flue height h of furnace body section, the combustion flue height of First Transition section 18 " is greater than the combustion flue height h1 of descending branch 19 in other words,
The combustion flue height h2 of first section 17 ' is greater than the combustion flue height h1 of descending branch 19, and the combustion flue height h2 of the first section 17 ' is substantially etc.
In the combustion flue height of the first turning part A, two relatively high areas of combustion flue height are respectively included in the two sides of the first turning part A
Section.In the present embodiment, from the first turning part A toward cooling section direction, roughly the same, the first mistake of combustion flue height of the first section 17 '
Section is crossed from the first turning part A toward 19 direction of descending branch, gradually incremental section is presented including a combustion flue height, then gradually subtracts again
It is small until identical as the combustion flue height of descending branch.The structure of second turnaround section is also referred to the structure of the turnaround section, and only
Two changeover portions are relatively close or adjoin the ascent stage, and the second section is relatively close or adjoins furnace body section, no longer repeats here.At this
Embodiment, continuous tunnel furnace further include auxiliary burner 20, and the relatively close furnace body outlet portion 21 of auxiliary burner 20 is opposite in other words to lean on
The outlet port setting of nearly descending branch 19, auxiliary burner 20 enables hydrogen extra in furnace to burn, while can play and take out of
The effect of exhaust gas in furnace.When furnace entrance is lighted a fire, when plug for outlet misfires, the hydrogen entered among furnace flows to the speed of furnace entrance
It is greater than the speed for flowing to plug for outlet；It adjusts the difference in height of furnace entrance and plug for outlet constantly only to reach air balance, adjusts
It is relatively cumbersome；And after the auxiliary burner by adding relatively close plug for outlet, reaching front and back lights a fire, and keeps gas stream in the stove opposite
Stablize, eliminates constantly adjustment furnace entrance and the difference in height of plug for outlet come the step of reaching air balance, both ends keep height base
This is consistent, and after furnace both ends are lighted a fire, the protection gas in furnace is easy to flow to both ends, can also reach more original one end
It is opposite when igniting to want small protection air-flow amount full of in furnace, reach solar term effect；Furnace interior product can be accelerated also to originate in again
Raw exhaust gas discharges out of the furnace, and can balance the pressure of initial and tail sections in furnace by the way that auxiliary burner is arranged in this way, reach reduction gas
The purpose of amount.
A kind of specific structure of auxiliary burner 20 please join Fig. 8, and auxiliary burner 20 has lighting-up tuyere 201, auxiliary combustion
Device 20 is arranged in the opposing end portions of continuous tunnel furnace, and what specifically auxiliary burner 20 was arranged in the direction of transfer of continuous tunnel furnace has furnace
The end in road, and descending branch is set relatively above, workpiece is not interfered with when burning in this way, auxiliary burner 20 includes hydrogen
Gas fairlead 204, discharge line 206, the interconnecting part being connected to the combustion flue 191 of the end section of combustion flue 30 descending branch in other words
203, and be provided with the first control valve 202 whether controllable tubing giving sufficient strength 206 is connected to, control whether hydrogen fairlead 204 is connected to
Second control valve 205, the first control valve 202 are set to discharge line 206, and the first control valve 202 is set to hydrogen fairlead 204
Or adjoin at hydrogen fairlead 204, pipeline 206 is connected to by interconnecting part 203 with combustion flue 191, and it is opposite that interconnecting part 203 is located at combustion flue
Close to the position of outlet portion 21.In order to make the pressure balance in combustion flue, flow control valve is can be used in the first control valve 202, with control
The flow for the exhaust gas that tubing giving sufficient strength 206 circulates.When in use, the second control valve 205 is opened, opens the first control valve 202, and use
Open fire is lighted in lighting-up tuyere, makes the exhaust gas combination combustion of hydrogen of discharge.After ignition, hydrogen fairlead, which can be, passes to always less
The mode for measuring hydrogen, in addition can also close after ignition.In this way by one relatively simple auxiliary burner of setting, can make
The exhaust gas of continuous tunnel furnace discharge contains less hydrogen or even is substantially free of hydrogen, while by the setting of flow control valve, also
It can make the pressure relative equilibrium in combustion flue, enable continuous tunnel furnace is relatively reliable steadily to run.Similarly auxiliary burner can also answer
For above-mentioned first, second embodiment, it is not described in detail one by one here.In addition, the structure of turnaround section can also make other changes, such as scheme
Embodiment shown in 9, the height of combustion flue where the first turning part A are that relative altitude is the smallest or even first turn in the turnaround section
The height h0 of the combustion flue of the position turn of bilge A can be close to the height of the even equal to combustion flue of furnace body section in other words close to even etc.
Height of the height of combustion flue less than combustion flue where the first section 17 " where the height of the combustion flue of descending branch, i.e. the first turning part A
Degree, again smaller than the height of combustion flue where First Transition section 18a.
Another embodiment is described below, Fig. 7 please be join, this be the fourth embodiment of continuous tunnel furnace include turnaround section and turnaround section with
The partial structural diagram of descending branch part, specific continuous tunnel furnace can be used for the occasion that a kind of combustion flue height changes, and inside can be with
Using hydrogen as protective gas or hydrogen as protective gas just like using nitrogen and hydrogen as protective gas, tunnel
Furnace is equally applicable to a variety of occasions such as weld or be heat-treated.Similarly turnaround section includes First Transition section 18 " ', the first section
17 ", First Transition section 18 " ' is in the first turning part A toward the side of descending branch 19, and the first section 17 " is in the first turning part A toward cold
But the other side of section 16, the combustion flue height h0 at position where the turnaround section of the present embodiment, the first turning part A is relatively minimal
, it might even be possible to it is close to or equal to the combustion flue height of furnace body section or descending branch, specifically, from the first turning part A toward cooling section
The combustion flue height presentation in direction, the first section is gradually incremented by, and reaches the first section with cooling section intersection combustion flue height at it
The opposite maximum value of combustion flue height, and from the first turning part A toward 19 direction of descending branch, the combustion flue height of First Transition section present by
Step is incremented by, and the maximum value that reach the combustion flue height of First Transition section with descending branch intersection combustion flue height at it opposite in this way may be used
So that the total measurement (volume) in combustion flue is relatively small, to realize energy saving purpose.The combustion flue height h0 at position is big where first turning part A
In the combustion flue height h1 for being equal to descending branch 19, also greater than the combustion flue height h for being equal to furnace body section, the combustion flue of First Transition section 18 " ' is high
The combustion flue height h0 at position where h3 is greater than the first turning part A is spent, the combustion flue height h2 of the first section 17 " is more than or equal to first turn
The combustion flue height h0 at position where turn of bilge A, that is to say, that respectively include two combustion flue height phases in the two sides of the first turning part A
To higher section.Correspondingly, the structure of the second turnaround section is also referred to the structure of the turnaround section, only the second changeover portion phase
To close or adjoin the ascent stage, and the second section is relatively close or adjoins furnace body section, no longer repeats here.Same continuous tunnel furnace can also
To include auxiliary burner, the relatively close furnace body outlet portion 21 of auxiliary burner is arranged, in other words relatively close descending branch 19
Outlet port setting, auxiliary burner is referred to above-described embodiment, hydrogen extra in furnace is enable to burn, while can play
Band come out of the stove interior exhaust gas and balance furnace in initial and tail sections pressure.
On the basis of several embodiments being introduced above, continuous tunnel furnace can also have various change.Such as feeder and outlet
The height in portion can be different, and the feeder of continuous tunnel furnace is such as made to be located at a relatively low floor such as Stall, and passes through processing
Workpiece outlet be located at another floor more relatively high than the feeder of continuous tunnel furnace, in this way, continuous tunnel furnace can only include
Second turnaround section, one turnaround section described in the embodiment of face, and the first turnaround section and descending branch are no longer needed, such tunnel
Furnace is suitable for welding or needing the product further assembled after being heat-treated, as part is welded to form group by one floor down through continuous tunnel furnace
Part, then assemble component and other component to form product in second floor.In addition it can be reversed, even if the feeder of continuous tunnel furnace
Positioned at relatively high first floor such as second floor, and pass through the outlet of the workpiece of processing positioned at more relatively low than the feeder of continuous tunnel furnace
Another building such as Stall, in this way, continuous tunnel furnace can only include one turnaround section of the first turnaround section described in above example
With descending branch, and the second turnaround section and ascent stage etc. are no longer needed, these can according to need and are specifically improved.
It should be understood that above embodiments are merely to illustrate the present invention and not limit technical side described in the invention
Case, such as "front", "rear", "upper", "lower" isotropy are defined, although this specification is referring to the above embodiments to this hair
It is bright to have been carried out detailed description, still, those skilled in the art should understand that, person of ordinary skill in the field
Still the present invention can be combined with each other, modified or equivalent replacement, as the second turnaround section can refer to any embodiment
First turning segment structure carries out various combinations or replacement, and all do not depart from the technical solution of the spirit and scope of the present invention
And its improve, it should all cover in scope of the presently claimed invention.
Claims (5)
1. a kind of continuous tunnel furnace, including feeder, furnace body section, cooling section, it is characterised in that the continuous tunnel furnace can be made using hydrogen
For protective gas or as one of protective gas, the continuous tunnel furnace includes can be for the combustion flue that workpiece passes through, the combustion flue and furnace
It is relatively isolated outside road；The continuous tunnel furnace further includes auxiliary burner, and the auxiliary burner includes lighting-up tuyere, hydrogen extraction
The opposing end portions of the continuous tunnel furnace are arranged in pipe, discharge line, the auxiliary burner, and the pipeline and combustion flue pass through interconnecting part
It is connected, the auxiliary burner is provided with control valve whether controlling pipeline connection, the outlet of the hydrogen fairlead
It is arranged close to the lighting-up tuyere.
2. continuous tunnel furnace according to claim 1, which is characterized in that the continuous tunnel furnace include at least one turnaround section at least
One height change section, the height change section are connected with the turnaround section, corresponding with the height change section, each institute
Stating height change section at least has the corresponding turnaround section, and the turnaround section includes at least one turning part, described
Combustion flue is more than or equal to the combustion flue in the combustion flue height of the furnace body section in the height of the turnaround section.
3. continuous tunnel furnace according to claim 1 or 2, which is characterized in that the continuous tunnel furnace at work, controls the pipeline
Connected state is opened or be in control valve whether connection, and the auxiliary burner is in burning working condition, the interconnecting part
Positioned at the relatively close outlet portion one end of the combustion flue.
4. continuous tunnel furnace according to claim 1 or 2, which is characterized in that the continuous tunnel furnace at work, draw by the hydrogen
Pipe is in connected state, and the continuous tunnel furnace at work, open or in connection by control valve whether controlling pipeline connection
State, the auxiliary burner are in burning working condition, and the interconnecting part is located at the relatively close outlet portion one end of the combustion flue.
5. continuous tunnel furnace according to any one of the preceding claims, which is characterized in that the continuous tunnel furnace includes feeder, rises
Section, the second turnaround section, furnace body section, cooling section, the first turnaround section, descending branch, the cooling section are located at the furnace body section and first
Between turnaround section, between second turnaround section and the cooling section, the height of the furnace body section is higher than the furnace body section
Equal to the height of the ascent stage and the second turnaround section, the height of the furnace body section is optionally greater than first turnaround section and decline
The height of section, the height of the furnace body section are higher than the height of the feeder；The continuous tunnel furnace further includes discharge portion, the discharge
The relatively close feeder setting in portion or the relatively close ascent stage setting of the discharge portion or the discharge position
In the front end of the ascent stage, the continuous tunnel furnace is additionally provided with main burner in the discharge portion, and the continuous tunnel furnace is described cold
But section is additionally provided with the connector for being connected to hydrogen；In the combustion flue direction of the continuous tunnel furnace, the connector is located at described
Between main burner and auxiliary burner, the furnace body section is between the main burner and the connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711051524.3A CN109724401A (en) | 2017-10-31 | 2017-10-31 | A kind of continuous tunnel furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711051524.3A CN109724401A (en) | 2017-10-31 | 2017-10-31 | A kind of continuous tunnel furnace |
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| CN109724401A true CN109724401A (en) | 2019-05-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112013677A (en) * | 2020-09-04 | 2020-12-01 | 嘉兴市合一工业电炉有限公司 | Airtight gas-saving tunnel furnace |
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| JP2002331357A (en) * | 2001-02-23 | 2002-11-19 | Tamura Seisakusho Co Ltd | Hot air injection device, hot air injection type heating device and heating furnace |
| CN101611157A (en) * | 2006-12-22 | 2009-12-23 | 中部威灵武株式会社 | Thermal treatment unit |
| CN206500729U (en) * | 2017-02-17 | 2017-09-19 | 大典五金制品（九江）有限公司 | A kind of net belt type controls atmosphere continuous brazing furnace |
| CN107214392A (en) * | 2017-08-08 | 2017-09-29 | 郑州联冠科技有限公司 | Novel brazing furnace |
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|---|---|---|---|---|
| JP2002331357A (en) * | 2001-02-23 | 2002-11-19 | Tamura Seisakusho Co Ltd | Hot air injection device, hot air injection type heating device and heating furnace |
| CN101611157A (en) * | 2006-12-22 | 2009-12-23 | 中部威灵武株式会社 | Thermal treatment unit |
| CN206500729U (en) * | 2017-02-17 | 2017-09-19 | 大典五金制品（九江）有限公司 | A kind of net belt type controls atmosphere continuous brazing furnace |
| CN107214392A (en) * | 2017-08-08 | 2017-09-29 | 郑州联冠科技有限公司 | Novel brazing furnace |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112013677A (en) * | 2020-09-04 | 2020-12-01 | 嘉兴市合一工业电炉有限公司 | Airtight gas-saving tunnel furnace |
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