CN207227491U - A kind of environmental protection accumulation of heat Type Car-bottom Heat Treating Furnace - Google Patents
A kind of environmental protection accumulation of heat Type Car-bottom Heat Treating Furnace Download PDFInfo
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- CN207227491U CN207227491U CN201721221671.6U CN201721221671U CN207227491U CN 207227491 U CN207227491 U CN 207227491U CN 201721221671 U CN201721221671 U CN 201721221671U CN 207227491 U CN207227491 U CN 207227491U
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Abstract
The technical field of heating furnace is the utility model is related to, particularly a kind of environmentally friendly accumulation of heat Type Car-bottom Heat Treating Furnace, including heating furnace body, fire door and some gas burners being distributed along heating furnace body length direction, gas burner include：Air inlet pipe, air outlet pipe, first circulation pipe, second circulation pipe, first circulation pipe and second circulation pipe both ends can be opened and closed, the heat storage burner being symmetricly set on the outside of heating furnace body, regenerative block, accumulation of heat accommodating chamber, and burner, accumulation of heat accommodating chamber is connected by connecting tube with first circulation pipe and second circulation pipe, burner passes through heating furnace body, burner has fuel port, air scoop and ejiction opening, the fuel port of accumulation of heat accommodating chamber and burner is tightly connected, regenerative block is fixedly connected with the fuel port side of burner, ejiction opening is extended in the burner hearth of heating furnace body, solve the problems, such as that laser heating is unable in heating furnace make it that production efficiency is relatively low, obtain well energy saving, improve the uniformity of temperature, reduce the effect of discharge.
Description
Technical field
The technical field of heating furnace is the utility model is related to, particularly a kind of environmentally friendly accumulation of heat Type Car-bottom Heat Treating Furnace.
Background technology
Type Car-bottom Heat Treating Furnace, furnace bottom are a removable trolley, and heating front chassis feeds outside stove, after piece installing, by leading
Draw mechanism and pull in trolley in stove and heated, after heating, trolley is pulled out into discharging outside stove by haulage gear.Since trolley only has
One, the stand-by period that works during loading and unloading is longer, and the work efficiency of heat-treatment furnace is relatively low, and during loading and unloading, stove
Internal heat can leak, and thermal losses is larger.
Chinese patent CN201410212828.3 provides a kind of efficient Type Car-bottom Heat Treating Furnace, by being set on trolley track
Two trolleys are put, when a trolley, which enters in furnace body, to be heat-treated, the loading and unloading of another trolley can be completed, carried out in turn
Heat treatment, advantageously reduces the stand-by period, reduces the loss of furnace heat, improves the work efficiency of heat-treatment furnace, and by
Bottom of furnace body and pallet bottom set the positioning sensing device and alignment sensor being mutually matched respectively, and detection trolley runs to position
Bogie wheels are braked by brake valve afterwards, trolley is carried out to be accurately positioned control, the sealing of trolley and furnace body is ensured, prevents heat
Leak, improve the work efficiency of heat-treatment furnace and the treatment effect of broken workpiece.Lifting gear is set in bottom of furnace body, works as trolley
After in place, lifting gear, which rises, to be held out against between trolley and furnace body, further ensures the leakproofness of heating chamber furnace inner space, effectively
Prevent heat losses, improve the thermal effectiveness to product.Cylinder by being provided with solenoid valve drives the operation of trolley, real
Existing automatic operating, reduces the working strength manually pushed and pulled, and by setting the range ability of solenoid valve control cylinder piston, have
Controlled beneficial to the positioning trip of trolley.By setting refrigerating plant on the trolley track of furnace body both sides, to the product come out of the stove into
Row cools, and is easy to the discharging of product after cooling, improves unloading efficiency.The stand-by period of loading and unloading can be effectively reduced, it is real
Existing trolley it is automatic, be accurately positioned, ensure the good sealing property between trolley and furnace body, reduce thermal loss, improve heat treatment
The work efficiency of stove.But such structure cannot continuously to heating element provide high temperature combustion air cause production efficiency compared with
It is low.
Utility model content
The technical problems to be solved in the utility model is：In order to solve to be unable to laser heating in heating furnace to cause production efficiency
The problem of relatively low, the utility model provides a kind of environmentally friendly accumulation of heat Type Car-bottom Heat Treating Furnace, by air inlet pipe and air outlet pipe both ends
Control opening and closing respectively, to cause two regenerative blocks with group to be in accumulation of heat and the alternate working status of heat release, so as to reach each pair
The purpose of gas burner laser heating, obtains good uniformity that is energy saving, improving temperature, reduces the effect of discharge.
Technical solution is used by the utility model solves its technical problem：A kind of environmental protection accumulation of heat Type Car-bottom Heat Treating Furnace,
Include including heating furnace body, fire door and some gas burners being distributed along heating furnace body length direction, the gas burner：
Air inlet pipe, the air inlet pipe are arranged on the side away from fire door on the outside of heating furnace body, and the air inlet pipe, which extends to, to be added
Above hot stove body,
Air outlet pipe, the air outlet pipe are arranged on the side away from fire door on the outside of heating furnace body, and the air outlet pipe, which extends to, to be added
Above hot stove body,
The air inlet pipe is connected by threeway with first circulation pipe, and the first circulation pipe both sides are setting able to turn on or off,
The air outlet pipe is connected by threeway with second circulation pipe, and the second circulation pipe both sides are setting able to turn on or off,
The heat storage burner being symmetricly set on the outside of heating furnace body, the heat storage burner include：Regenerative block, accumulation of heat
Accommodating chamber and burner, the accumulation of heat accommodating chamber are connected by connecting tube with first circulation pipe and second circulation pipe, and the burner is worn
Heating furnace body is crossed, the burner has fuel port, air scoop and ejiction opening, the fuel port sealing of the accumulation of heat accommodating chamber and burner
Connection, the regenerative block are fixedly connected with the fuel port side of burner, and the ejiction opening is extended in the burner hearth of heating furnace body.
Specifically, the regenerative block is bead or honeycomb fashion, and the accumulation of heat block of material is metal or ceramics.
Preferably, the regenerative block is the bead mode mixed with honeycomb, bead and the honeycomb ratio is 9:1.
Specifically, the heating furnace body includes：Furnace body furnace shell and furnace lining, the fire door include：Fire door furnace shell and stove
Door lining.
Specifically, the fire door further includes furnacing door lifting mechanism, and the furnacing door lifting mechanism includes：Supporting rod, supporting rack,
Movable pulley, the first fixed pulley, the second fixed pulley, the 3rd fixed pulley, cable wire and motor cucurbit, the motor cucurbit are fixedly connected on
Supporting rod bottom, support frame as described above are fixedly connected on support bar top, and first fixed pulley, the second fixed pulley and the 3rd are fixed sliding
Wheel is fixedly connected with supporting rack, and one end of the fire door furnace shell through the 3rd fixed pulley and the first fixed pulley and is moved by cable wire
Pulley is fixedly connected, and the other end of the fire door furnace shell is consolidated by cable wire through the second fixed pulley and the first fixed pulley with movable pulley
Fixed connection.
Specifically, the air inlet pipe is equipped with the first two-position three way magnetic valve with first circulation pipe junction.
Specifically, the air outlet pipe is equipped with the second two-position three way magnetic valve with second circulation pipe junction.
Specifically, sealing mechanism, the sealing mechanism include：The card slot that is fixedly connected with furnace body furnace shell and with fire door furnace shell
The fastener being fixedly connected.
Specifically, the furnace body furnace shell or furnace lining and door lining contact surface and fire door elevating mechanism movement
There is angle [alpha] between vertical plane.
Specifically, the scope of the angle [alpha] is 2-4 °.
The beneficial effects of the utility model are：
The utility model provides a kind of environmentally friendly accumulation of heat Type Car-bottom Heat Treating Furnace, and two regenerative blocks with group are in accumulation of heat with putting
The alternate working status of heat, so as to achieve the purpose that each pair gas burner laser heating, obtains good energy saving, raising temperature
Uniformity, reduce discharge effect.
The utility model provides a kind of environmentally friendly accumulation of heat Type Car-bottom Heat Treating Furnace, prevents the hot gas in heating furnace burner hearth from revealing,
Fire door and heating furnace body are slidably matched so that fire door to be compressed to heating furnace body by card slot and fastener, are blocked up by sealing cotton block
The firmly gap between fire door and heating furnace body.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is a kind of structure diagram of environmentally friendly accumulation of heat Type Car-bottom Heat Treating Furnace of the utility model；
Fig. 2 is the left view schematic diagram of Fig. 1；
Fig. 3 is the structure diagram of part A in Fig. 1；
In figure：1. air inlet pipe, 2. air outlet pipes, 3. first circulation pipes, 4. second circulation pipes, 5. regenerative blocks, 6. accumulation of heats accommodate
Chamber, 7. burners, 71. air scoops, 72. fuel ports, 73. ejiction openings, 8. furnace body furnace shells, 9. furnace linings, 10. fire door furnace shells, 11.
Door lining, 12. supporting rods, 13. supporting racks, 14. movable pulleys, 15. first fixed pulleys, 16. second fixed pulleys, 17. the 3rd is fixed
Pulley, 18. first two-position three way magnetic valves, 19. second two-position three way magnetic valves, 20. card slots, 21. fasteners.
Embodiment
The utility model is described in further detail presently in connection with attached drawing.These attached drawings are simplified schematic diagram,
Only illustrate the basic structure of the utility model in a schematic way, therefore it only shows the composition related with the utility model.
As shown in the figure, the utility model provides a kind of environmentally friendly accumulation of heat Type Car-bottom Heat Treating Furnace, including heating furnace body, fire door and
Eight gas burners being distributed along heating furnace body length direction, burner hearth Control for Kiln Temperature can divide eight by heating furnace body length direction
A region is temperature automatically controlled, and each temperature control can be adjusted arbitrarily, and the gas burner includes：
Air inlet pipe 1, air inlet pipe 1 are arranged on the side away from fire door, air inlet pipe 1 on the outside of heating furnace body and extend to heating furnace body
Top,
Air outlet pipe 2, air outlet pipe 2 are arranged on the side away from fire door, air outlet pipe 2 on the outside of heating furnace body and extend to heating furnace body
Top,
Air inlet pipe 1 is connected by threeway with first circulation pipe 3, and 3 both sides of first circulation pipe are setting able to turn on or off,
Air outlet pipe 2 is connected by threeway with second circulation pipe 4, and 4 both sides of second circulation pipe are setting able to turn on or off,
The heat storage burner being symmetricly set on the outside of heating furnace body, heat storage burner include：Regenerative block 5, accumulation of heat are held
Receive chamber 6 and burner 7, accumulation of heat accommodating chamber 6 is connected by connecting tube with first circulation pipe 3 and second circulation pipe 4, burner 7 through plus
Hot stove body, burner 7 have fuel port 72, air scoop 71 and ejiction opening 73, and accumulation of heat accommodating chamber 6 and the fuel port 72 of burner 7 seal
Connection, regenerative block 5 are fixedly connected with 72 side of fuel port of burner 7, and ejiction opening 73 is extended in the burner hearth of heating furnace body, burner
7 temperature control regulative mode, is to automatically adjust furnace fuel consumption by 7 air-fuel ratio of burner to control furnace temperature, each to burn
Mouth 7 in burning is worked under optimal combustion state, and burning is complete, the appearance of localized hyperthermia is avoided, so as to change significantly
It to be apt to temperature uniformity, has realized that the control temperature difference reaches the scope of technological requirement, burner 7 is furnished with automatic ignition, flame monitoring apparatus,
And necessary valve etc., link with the valve on air pipe line, form empty, combustion ratio and continuously adjust burning, when event occurs for burner 7
When barrier is flame-out, by flame monitor automatic self-closing gas valve, alarm of being concurrently out of order；Connecting tube connects with accumulation of heat accommodating chamber 6
Regulator can be equipped with by meeting place, can automatically adjust gas pressure according to combustion case, will be manual before regulator after blowing out
Gate valve is closed；Flow detector is installed in connecting tube, records instantaneous delivery and integrated flow；It is equipped with before burner 7 quickly certainly
Dynamic stop valve（Solenoid valve）, it is mainly used for controlling the gas supply of burner 7, realizes temperature controlled purpose；When combustion gas is under-voltage, wind
When machine failure, suddenly power failure, burner 7 are put out a fire, gas supply can be also automatically cut off immediately, it is ensured that safety in production；Stove both sides
Air scoop 71 is equipped with burst disk, causes danger to prevent there is combustion gas to penetrate into air pipe line.
In use, 3 left end of first circulation pipe blocks right end opening, 4 left end of second circulation pipe is opened right end and is blocked, from air inlet
The air that pipe 1 enters is entered in accumulation of heat accommodating chamber 6 from the right end of first circulation pipe 3 by connecting tube, passes through the accumulation of heat of right end heat
It is heated after 5 heat release of block and enters from air scoop 71 in burner 7, normal temperature air is heated to close to burner hearth within the extremely short time
Temperature（It is 150-100 DEG C generally lower than furnace temperature）, after heated high-temperature gas enters burner 7, the flue gas that volume inhales surrounding forms one
Stock oxygen content is significantly less than 21% thin oxygen deprivation high temperature gas flow, while injects and fire from fuel port 72 at past thin high temperature air
Gas, combustion gas is in oxygen deprivation（2-20%）In the state of realize burning so that the regenerative block 5 of left end carries out accumulation of heat, and from second circulation
4 left end of pipe, which enters in air outlet pipe 2, carries out outlet, when 5 shortage of heat of regenerative block of right end, by 3 right end of first circulation pipe
Left end opening is blocked, 4 left end of second circulation pipe blocks right end opening, and the combustion gas entered from air inlet pipe 1 is from a left side for first circulation pipe 3
End is entered in accumulation of heat accommodating chamber 6 by connecting tube, by being heated after 5 heat release of regenerative block of left end heat and entering from air scoop 71
In burner 7, normal temperature air is heated to close to fire box temperature within the extremely short time（It is 150-100 DEG C generally lower than furnace temperature）, quilt
After the high-temperature gas of heating enters burner 7, the flue gas that volume inhales surrounding forms the thin oxygen deprivation that one oxygen content is significantly less than 21%
High temperature gas flow, while combustion gas is injected from fuel port 72 at past thin high temperature air, combustion gas is in oxygen deprivation（2-20%）In the state of it is real
Now burning so that the regenerative block 5 of left end carries out accumulation of heat, and enter from two circulation pipes 4 in air outlet pipe 2 and complete one cycle, make same
Two gas burners of group are in accumulation of heat and the alternate working status of heat release, so as to reach each pair gas burner laser heating
Purpose, obtain good uniformity that is energy saving, improving temperature, reduce the effect of discharge.
Specifically, regenerative block 5 is bead or honeycomb fashion, and 5 material of regenerative block is metal or ceramics, bead accumulation of heat, air row
It is shaped form to walk route, and the track route of honeycomb regenerator is linear.Two all compare, with the resistance to honeycomb of bead accumulation of heat ratio
Body accumulation of heat effect is more preferable.And cleaning of the bead in the amount of stored heat of unit volume, the durable tolerance of regenerative block 5 and blocking and
Being conveniently replaceable broken damage etc. has very big advantage.
In a kind of embodiment, the mode that regenerative block 5 is alone bead, the longevity of this mode regenerative block 5 are chosen
Life about 5 years, replaces 10% every year.
Specifically, heating furnace body includes：Furnace body furnace shell 8 and furnace lining 9, fire door includes：In fire door furnace shell 10 and fire door
Lining 11, furnace body furnace shell 8 and furnace body furnace shell 10 use full steel structure, fully take into account in design heating furnace body integral strength,
The influence of the problems such as frame structure downwarp, thermal expansion, the influence of cold events and deformation, makes light and handy durable indeformable, the stove of steel construction
Lateral column, the rear pillar of body furnace shell 10 are big channel steel, are held between column and between column top with angle steel, form grid structure, knot
It is real, firm, reliability and durability.Even weld is smooth, the defects of without stomata, slag inclusion, crackle, incomplete fusion, appearance is straight, it is smooth,
There is no the uneven phenomenon of fold.Furnace lining 9 and door lining 11 are Whole fiber material.
Specifically, fire door further includes furnacing door lifting mechanism, and furnacing door lifting mechanism includes：Supporting rod 12, supporting rack 13, dynamic cunning
The 14, first fixed pulley 15 of wheel, the second fixed pulley 16, the 3rd fixed pulley 17, cable wire and motor cucurbit, motor cucurbit are fixedly connected on
12 bottom of supporting rod, supporting rack 13 are fixedly connected on the top of supporting rod 12, and the first fixed pulley 15, the second fixed pulley 16 and the 3rd are fixed
Pulley 17 is fixedly connected with supporting rack 13, and one end of fire door furnace shell 10 is fixed sliding through the 3rd fixed pulley 17 and first by cable wire
Wheel 15 is fixedly connected with movable pulley 14, and the other end of fire door furnace shell 10 passes through the second fixed pulley 16 and the first fixed pulley by cable wire
15 are fixedly connected with movable pulley 14, in use, shrinking cable wire by the motor cucurbit work of 12 bottom of supporting rod drives movable pulley
14 move down, by through the first fixed pulley 15 and the 3rd fixed pulley 17 and through the first fixed pulley 15 and the second fixed pulley 16
The cable wire fixed with fire door furnace shell 10 lifts fire door furnace shell 10, conversely, motor cucurbit work relieving cable wire can be by fire door stove
Shell 10 is put down, and completes the closing of fire door, and dual fail-safe limit switch is housed in fire door side, prevents fire door overtravel.Fire door is also set
There is a counter weight device, reduce motor load, fire door rapid descent when preventing motor braking failure.
Specifically, air inlet pipe 1 is equipped with the first two-position three way magnetic valve 18 with 3 junction of first circulation pipe.
Specifically, air outlet pipe 2 is equipped with the second two-position three way magnetic valve 19 with 4 junction of second circulation pipe.
In a kind of embodiment is, the hot gas leakage in heating furnace burner hearth, further includes in order to prevent：Sealer
Structure, sealing mechanism include：The card slot 20 being fixedly connected with furnace body furnace shell 8 and the fastener 21 being fixedly connected with fire door furnace shell 10,
During fire door declines, fastener 21 is stuck in card slot 20 and slides, and card slot 20 slopes inwardly can be by fire door to heating furnace body pressure
Tightly, hot-air outflow in burner hearth is avoided to influence heating effect.
As shown in figure 3, in a kind of embodiment, in order to further strengthen sealing effect, furnace body furnace shell 8 or furnace body
There is angle [alpha] between the vertical plane of the contact surface and fire door elevating mechanism of liner 9 and door lining 11 movement, due to fire door top
It is fixed by pulling, it is higher for the requirement of fire door vertical and straight movement straightness in seal process, somewhat produce some deviations
Will furnace lining 9 have with door lining 11 in the bottom of contact position together with gap, influence the sealing performance of whole heating furnace, stove
An angle [alpha] is tilted between the vertical plane of the contact surface and fire door elevating mechanism of lining 9 and door lining 11 movement in vivo, in fire door
During decline, even if not being vertically lowered, it is also possible that sealing is close, stove leakage fire phenomenon is further eliminated, improves stove
Sub- sealing effect, strengthens stove heating effect.
Specifically, angle [alpha] is preferably 2 °, 3 ° or 4 °, if angle [alpha] is less than 2 °, tilts unobvious, furnace lining 9 and stove
The lower part of 11 junction of door lining still has compared with big gap, and sealing effect is bad, if angle [alpha] is more than 4 °, furnace lining 9 with
The junction top of door lining 11 can also open up larger gap, influence sealing effect.
Embodiment 2
With embodiment 1, difference is other parts：Selection regenerative block 5 is alone cellular mode, and this mode stores
The service life of heat block 5 is 1 year, and service life is half a year in Large-scale Heater.
Embodiment 3
With embodiment 2, difference is other parts：Choose the mode that regenerative block 5 mixes for bead and honeycomb, bead
It is 9 with cellular ratio:1 is a kind of preferred forms, and the service life of this mode regenerative block 5 is 8 years, annual to need more
Change 10%.
Using the above-mentioned desirable embodiment according to the utility model as enlightenment, pass through above-mentioned description, related work people
Member can carry out various changes and amendments in the range of without departing from this item utility model technological thought completely.This item is real
The content being not limited to new technical scope on specification, it is necessary to which its technology is determined according to right
Property scope.
Claims (10)
1. a kind of accumulation of heat Type Car-bottom Heat Treating Furnace, including heating furnace body, fire door and some combustions being distributed along heating furnace body length direction
Air burner, it is characterised in that：The gas burner includes：
Air inlet pipe (1), the air inlet pipe (1) are arranged on the side away from fire door on the outside of heating furnace body, air inlet pipe (1) extension
Above to heating furnace body,
Air outlet pipe (2), the air outlet pipe (2) are arranged on the side away from fire door on the outside of heating furnace body, air outlet pipe (2) extension
Above to heating furnace body,
The air inlet pipe (1) is connected by threeway with first circulation pipe (3), and first circulation pipe (3) both sides are able to turn on or off
Set,
The air outlet pipe (2) is connected by threeway with second circulation pipe (4), and second circulation pipe (4) both sides are able to turn on or off
Set,
The heat storage burner being symmetricly set on the outside of heating furnace body, the heat storage burner include：Regenerative block (5), accumulation of heat
Accommodating chamber (6) and burner (7), the accumulation of heat accommodating chamber (6) pass through connecting tube and first circulation pipe (3) and second circulation pipe (4)
Connection, the burner (7) pass through heating furnace body, and the burner (7) has fuel port (72), air scoop (71) and ejiction opening
(73), the accumulation of heat accommodating chamber (6) and the fuel port (72) of burner (7) are tightly connected, the regenerative block (5) and burner (7)
Fuel port (72) side is fixedly connected, and the ejiction opening (73) is extended in the burner hearth of heating furnace body.
A kind of 2. accumulation of heat Type Car-bottom Heat Treating Furnace as claimed in claim 1, it is characterised in that：The regenerative block (5) for bead or
Honeycomb fashion, regenerative block (5) material are metal or ceramics.
A kind of 3. accumulation of heat Type Car-bottom Heat Treating Furnace as claimed in claim 2, it is characterised in that：The regenerative block (5) for bead with
The mode that honeycomb is used with, bead and the honeycomb ratio are 9:1.
A kind of 4. accumulation of heat Type Car-bottom Heat Treating Furnace as claimed in claim 1, it is characterised in that：The heating furnace body includes：Furnace body
Furnace shell (8) and furnace lining (9), the fire door include：Fire door furnace shell (10) and door lining (11).
A kind of 5. accumulation of heat Type Car-bottom Heat Treating Furnace as claimed in claim 4, it is characterised in that：The fire door further includes furnacing door lifting
Mechanism, the furnacing door lifting mechanism include：Supporting rod (12), supporting rack (13), movable pulley (14), the first fixed pulley (15),
Two fixed pulleys (16), the 3rd fixed pulley (17), cable wire and motor cucurbit, the motor cucurbit are fixedly connected on supporting rod (12) bottom
Portion, support frame as described above (13) are fixedly connected at the top of supporting rod (12), first fixed pulley (15), the second fixed pulley (16) and
3rd fixed pulley (17) is fixedly connected with supporting rack (13), and one end of the fire door furnace shell (10) is fixed through the 3rd by cable wire
Pulley (17) and the first fixed pulley (15) are fixedly connected with movable pulley (14), and the other end of the fire door furnace shell (10) passes through cable wire
It is fixedly connected through the second fixed pulley (16) and the first fixed pulley (15) with movable pulley (14).
A kind of 6. accumulation of heat Type Car-bottom Heat Treating Furnace as claimed in claim 1, it is characterised in that：The air inlet pipe (1) is followed with first
Endless tube (3) junction is equipped with the first two-position three way magnetic valve (18).
A kind of 7. accumulation of heat Type Car-bottom Heat Treating Furnace as claimed in claim 1, it is characterised in that：The air outlet pipe (2) is followed with second
Endless tube (4) junction is equipped with the second two-position three way magnetic valve (19).
8. a kind of accumulation of heat Type Car-bottom Heat Treating Furnace as claimed in claim 4, it is characterised in that further include：Sealing mechanism, it is described close
Sealing mechanism includes：The card slot (20) being fixedly connected with furnace body furnace shell (8) and the fastener (21) being fixedly connected with fire door furnace shell (10).
A kind of 9. accumulation of heat Type Car-bottom Heat Treating Furnace as claimed in claim 4, it is characterised in that：The furnace body furnace shell (8) or furnace body
There is angle [alpha] between the vertical plane of the contact surface and fire door elevating mechanism of liner (9) and door lining (11) movement.
A kind of 10. accumulation of heat Type Car-bottom Heat Treating Furnace as claimed in claim 9, it is characterised in that：The scope of the angle [alpha] is 2-
4°。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721221671.6U CN207227491U (en) | 2017-09-21 | 2017-09-21 | A kind of environmental protection accumulation of heat Type Car-bottom Heat Treating Furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721221671.6U CN207227491U (en) | 2017-09-21 | 2017-09-21 | A kind of environmental protection accumulation of heat Type Car-bottom Heat Treating Furnace |
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| Publication Number | Publication Date |
|---|---|
| CN207227491U true CN207227491U (en) | 2018-04-13 |
Family
ID=61863457
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721221671.6U Expired - Fee Related CN207227491U (en) | 2017-09-21 | 2017-09-21 | A kind of environmental protection accumulation of heat Type Car-bottom Heat Treating Furnace |
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| Country | Link |
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| CN (1) | CN207227491U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112923363A (en) * | 2021-03-02 | 2021-06-08 | 张通 | Heat accumulating type low-nitrogen burner with catalyst honeycomb body |
-
2017
- 2017-09-21 CN CN201721221671.6U patent/CN207227491U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112923363A (en) * | 2021-03-02 | 2021-06-08 | 张通 | Heat accumulating type low-nitrogen burner with catalyst honeycomb body |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180413 Termination date: 20210921 |
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| CF01 | Termination of patent right due to non-payment of annual fee |