CN103392107B - Elevator-type thermal processing furnace - Google Patents
Elevator-type thermal processing furnace Download PDFInfo
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- CN103392107B CN103392107B CN201280009867.2A CN201280009867A CN103392107B CN 103392107 B CN103392107 B CN 103392107B CN 201280009867 A CN201280009867 A CN 201280009867A CN 103392107 B CN103392107 B CN 103392107B
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- main body
- lifting platform
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- gas
- furnace
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B17/00—Furnaces of a kind not covered by any preceding group
- F27B17/0016—Chamber type furnaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B17/00—Furnaces of a kind not covered by any preceding group
- F27B17/0016—Chamber type furnaces
- F27B17/0033—Chamber type furnaces the floor of the furnaces consisting of the support carrying the charge, e.g. car type furnaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B17/00—Furnaces of a kind not covered by any preceding group
- F27B17/0016—Chamber type furnaces
- F27B17/0083—Chamber type furnaces with means for circulating the atmosphere
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Furnace Details (AREA)
- Powder Metallurgy (AREA)
Abstract
Provided is an elevator-type thermal processing furnace with which the accumulation of decomposed binder gas in the form of tar on the surface of the elevator table and from the furnace main body to the bottom thereof is prevented. This elevator-type thermal processing furnace (1) has: a furnace main body (10); an aperture (26) formed in the bottom of the furnace main body (10); a heater (36) arranged in the interior of the furnace main body (10); and an elevator table (12) that approaches or moves away from the aperture (26) of the furnace main body (10) in order to introduce into the interior of the furnace main body (10) and to remove therefrom an object to be heat treated. In addition, a sealing part (28) is arranged in the gap between the bottom of the furnace main body (10) and the elevator table (12). Furthermore, gas discharge ports (52c) are constructed so as to blow the same type of gas as the atmospheric gas within the furnace main body (10) toward the side surfaces of the elevator table (12).
Description
Technical field
The present invention relates to a kind of being suitable for carries out degreasing to ceramic mouldings or burns till the lift heat-treatment furnace of process.
Background technology
Such as, in the past, as to the firing furnace being heat-treated thing, i.e. ceramic mouldings and heat-treating, proposition has following lift heat-treatment furnace, form heating clamber in the inside of columnar furnace main body, in this heating clamber, be configured with thermal source, and utilize pressure fan furnace gas to be circulated, heats.Above-mentioned lift heat-treatment furnace is configured with liftable lifting platform in the bottom of furnace main body, and this lifting platform is placed with the case received ceramic mouldings, and lifting platform is rotated, while carry out the heat treatments such as degreasing.
In this lift heat-treatment furnace, in the process of heat-treating ceramic mouldings, the adhesive decomposition gas produced during degreasing just can cause problem.Because this adhesive decomposition gas is heavier than air, therefore, can flowing by side, bottom towards furnace main body.In order to make lifting platform insert in heating clamber, between the side of lifting platform and the wall being formed at the opening portion bottom furnace main body, be provided with narrow gap.Because the temperature in above-mentioned gap is lower than in-furnace temperature, therefore, exist towards furnace main body bottom then bonding agent decomposition gas can liquefy or solidify and accumulate such problem in tarry.
For the problems referred to above, following lift heat-treatment furnace is proposed, the side of lifting platform and be formed at the opening portion bottom furnace main body wall between gap in be configured with the gas introduction tube of ring-type, by blowing out atmosphere gas from above-mentioned gap in heating clamber, by this, adhesive decomposition gas is suppressed to be tarry liquefaction and to be accumulated in (with reference to patent document 1) in the gap between lifting platform and furnace main body etc.
Prior art document
Patent document
Patent document 1: Japanese Patent Laid-Open 10-141861 publication
Summary of the invention
Invent technical problem to be solved
But, in the lift heat-treatment furnace that patent document 1 proposes, particularly can produce a lot of organic gas in the skimming processes of ceramic mouldings, occur in the phenomenon liquefied in tarry in the surface of lifting platform, be difficult to obtain sufficient sealing effectiveness.That is, utilizing the gas introduction tube that configures in the form of a ring in heating clamber during blow gas, although tarry accumulation thing can be prevented to be attached on its blowout position, tarry accumulation thing cannot be suppressed to be attached to the position not having blow gas.In addition, even if via lifting platform side and be formed at the opening portion bottom furnace main body wall between gap and towards the adhesive decomposition gas of furnace main body flows by also cannot suppressing completely to blow gas in heating clamber, thus, exist and be accumulated in the such problem in the bottom of furnace main body with the state of the liquefaction in tarry.
Therefore, main purpose of the present invention is to provide a kind of adhesive decomposition gas that prevents to be the lift heat-treatment furnace that tarry is accumulated in the surface of lifting platform and the bottom of furnace main body.
The technical scheme that technical solution problem adopts
Lift heat-treatment furnace of the present invention has: furnace main body; Opening portion, this opening portion is formed at the bottom of furnace main body; Thermal source, this thermal source is configured in the inside of furnace main body; And lifting platform, this lifting platform by with the opening portion of furnace main body near or be separated, make to be heat-treated the inside that thing entered or exited furnace main body, it is characterized in that, comprise: the sealing of curtain shape, the seal portion configurations of this curtain shape is in the gap between the bottom and lifting platform of furnace main body; And gas blow-off outlet, this gas blow-off outlet is configured in the below of sealing, to be blown out the side of the gas of the atmosphere gas identical type with furnace main body inside towards lifting platform.
In addition, in lift heat-treatment furnace of the present invention, it is preferable that to have: sealing plate, sealing plate is extended from the bottom surface side of furnace main body; And protection walls, this protection walls is arranged between sealing plate and the side of lifting platform, and extended from the bottom surface side of furnace main body in the mode of the side near lifting platform.
Invention effect
According to lift heat-treatment furnace of the present invention, because the gap between the wall of opening portion and the side of lifting platform comprises sealing, and blow out atmosphere gas from the gas blow-off outlet of the below being arranged at sealing, therefore, adhesive decomposition gas can be prevented to be liquefied as the bottom side that tarry state is accumulated in furnace main body.Therefore, following lift heat-treatment furnace can be obtained: when Reusability lift heat-treatment furnace of the present invention, significantly can reduce the number of times of the tarry soil release of firmly clinging because of adhesive decomposition gas, and maintenance time can be shortened.
In addition, in lift heat-treatment furnace of the present invention, due to the partial configuration protection walls more in the inner part at sealing plate, therefore, can obtain a kind ofly preventing tarry accumulation thing to be attached to lift heat-treatment furnace on the side of sealing plate.
From carry out with reference to accompanying drawing, for implement following working of an invention mode explanation definitely above-mentioned purpose of the present invention, other object, feature and advantage.
Accompanying drawing explanation
Fig. 1 is the schematic sectional view of an embodiment of lift heat-treatment furnace of the present invention.
Fig. 2 is the enlarged drawing in the A portion of the lift heat-treatment furnace shown in Fig. 1.
Fig. 3 is the schematic sectional view of another embodiment of sealing in the lift heat-treatment furnace shown in Fig. 1, Fig. 3 (a) represents that sealing is arranged on the situation between the wall of opening portion and the first side of mounting portion, Fig. 3 (b) represents that sealing is arranged on the situation between the bottom surface in furnace main body portion and block surface, and Fig. 3 (c) represents that sealing is arranged on the situation between the bottom surface of furnace main body and the first side of mounting portion.
Fig. 4 is the schematic sectional view of another embodiment different from the lift heat-treatment furnace shown in Fig. 1.
Fig. 5 is the enlarged drawing in the B portion of the lift heat-treatment furnace shown in Fig. 4.
(symbol description)
1,2 lift heat-treatment furnaces
10 furnace main bodies
10a bottom surface
12 lifting platforms
14 whirligigs
14a rotating shaft
14b motor
16 sealing plates
16a medial surface
18 protection walls
18a side
20 installing plates
20a heat resistance seal
22 furnace main body supports
24 furnace chambers
26 opening portions
26a wall
28 sealings
28a mono-end
28b face
28c the other end
Another face of 28d
30 table portions
32 heating clambers
34 gas supply pipes
36 heaters
38 pressure fan
38a motor
38b blade part
40 exhaust manifolds
40a cap
42 peripheral passages
44 wall members
44a inlet orifices
44b exports passage
46 mounting portions
46a first side
46b loads plane
48 supports
48a second side
48b block surface
48c bottom surface
50 support plates
50a plectane portion
50b leg
52 gas introduction tubes
52a gas introduction part
52b pipe arrangement
52c gas blow-off outlet
60 containment members
60a inner end
60c lower surface
G1 first gap
G2 second gap
F loop direction
Detailed description of the invention
One embodiment of lift heat-treatment furnace of the present invention is described.Fig. 1 is the schematic sectional view of an embodiment of lift heat-treatment furnace of the present invention, and Fig. 2 is the enlarged drawing in the A portion of the lift heat-treatment furnace shown in Fig. 1.
Above-mentioned lift thermal processing furnaces in this way to being heat-treated in the low-temperature region of the operation that thing, i.e. ceramic mouldings burn till, the adhesive ingredients contained in removing ceramic mouldings and organic device, the lift heat-treatment furnace namely used in the degreasing process of ceramic mouldings.Below, an embodiment of lift heat-treatment furnace of the present invention is described in detail.
Lift heat-treatment furnace 1 shown in Fig. 1 comprises: furnace main body 10; Lifting platform 12, this lifting platform 12 is for loading case W; Whirligig 14, this whirligig 14 rotates in furnace main body 10 for driving lifting platform 12; Sealing plate 16 and installing plate 20, sealing plate 16 and installing plate 20 spill to the outside of lift heat-treatment furnace 1 for preventing atmosphere gas etc.; Protection walls 18, this protection walls 18 is attached to sealing plate 16 for preventing tarry accumulation thing; And furnace main body support 22, this furnace main body support 22 is for supporting furnace main body 10.
Furnace main body 10 to be arranged in lift heat-treatment furnace 1 ceramic mouldings etc., to be namely heat-treated thing and to accommodate, heat, and maintains the heat in stove.Furnace main body 10 is formed as drum.In addition, furnace main body 10 is formed by thermal insulation barriers such as ceramic-like brick and tile or fibers.The opening portion 26 of drum is formed in the bottom of furnace main body 10.In opening portion 26, be configured with lifting platform 12, this lifting platform 12 by with above-mentioned opening portion 26 close to or be separated, and ceramic mouldings can be made to enter or exit the inside of furnace main body 10.In addition, the sealing 28 of curtain shape is formed along the wall 26a of opening portion 26.
Sealing 28 is arranged to prevent adhesive decomposition gas from flowing into from furnace main body 10 towards bottom.Sealing 28 is formed as cylindric.In addition, a part of a face 28b of an end 28a of sealing 28 is such as fixed by screw etc. along the lower end side of the wall 26a of opening portion 26.In addition, in this case, an end 28a of sealing 28 is configured in upside, and a face 28b represents lateral surface.When lifting platform 12 insertion opening portion 26, the other end 28c of sealing 28 contacts with the block surface 48b of lifting platform 12 described later, and radially bends towards sealing plate 16 side as outer circumferential side.Consequently, a part of another face 28d of the other end 28c of sealing 28 contacts with the block surface 48b face of lifting platform 12.In addition, in this case, the other end 28c of sealing 28 is configured in downside, and another face 28d represents medial surface.Like this, sealing 28 is configured to curtain shape in the first gap g1 formed by lifting platform 12 and opening portion 26.In addition, even if drive lifting platform 12 to rotate, another face 28d that also can maintain the other end 28c of sealing 28 contacts with the face of the block surface 48b in lifting platform portion 12.Sealing 28 is formed by elastomer, such as, formed by silicone, polyurethane or elastomeric material etc.
In addition, the upper surface bottom furnace main body 10 is coated with furnace platform 30.Furnace platform 30 is arranged to suppress because adhesive decomposition gas is tarry liquefaction and directly accumulate in furnace main body 10.Furnace platform 30 is such as formed by heat resistance metals such as stainless steels.
The inside of furnace main body 10 is provided with furnace chamber 24.Heating clamber 32, gas supply pipe 34, heater 36 as thermal source, pressure fan 38, exhaust manifolds 40 and peripheral passage 42 is provided with in furnace chamber 24, wherein, above-mentioned heating clamber 32 is for heating be heat-treated thing, the i.e. ceramic mouldings that are placed in case W, above-mentioned gas supply pipe 34 is for being supplied in furnace chamber 24 by atmosphere gas, above-mentioned pressure fan 38 is for making atmosphere gas at furnace chamber 24 Inner eycle, above-mentioned exhaust manifolds 40 are for discharging waste gas, and above-mentioned peripheral passage 42 is for making atmosphere gas etc. at furnace chamber 24 Inner eycle.
Heating clamber 32 is arranged in and wherein contains case W, this case W make multiple ceramic mouldings such be heat-treated thing stacked under the state at interval each other along the vertical direction.Heating clamber 32 is formed by columnar wall member 44 in furnace chamber 24.Between wall member 44 be configured in the central authorities of furnace chamber 24.The sidepiece and the sidepiece contrary with it of a side of a wall member 44 are formed with multiple passage respectively, circulate in heating clamber 32 in the horizontal direction to make supplying from gas supply pipe 34 atmosphere gas come.Be formed with inlet orifices 44a at a sidepiece, be formed with outlet passage 44b at contrary sidepiece.In addition, the upper surface side of a wall member 44 is provided with gas supply pipe 34.
Gas supply pipe 34 is arranged to atmosphere gas to be supplied in furnace chamber 24.The atmosphere gas supplied by pressure fan 38 at peripheral passage 42 Inner eycle.Gas supply pipe 34 is configured in the upper surface side of a wall member 44 in the mode near the central portion being projected into furnace chamber 24.In addition, the heater 36 as thermal source is configured with on blow-off direction and on the position that is separated across interval of the supply port of gas supply pipe 34.
Heater 36 is arranged to heat supplying from gas supply pipe 34 atmosphere gas come.The upper surface side of wall member 44 between heater 36 is configured in furnace chamber 24, and be configured in central authorities.In addition, heater 36 is arranged on the midway of peripheral passage 42.Heater 36 is such as made up of U-shaped or bar-shaped thermal source.
Pressure fan 38 is arranged to peripheral passage 42 Inner eycle making hot blast in furnace chamber 24.Pressure fan 38 is formed by as the motor 38a of prime mover and blade part 38b.Motor 38a is configured in the outside of furnace main body 10, and blade part 38b is configured in furnace chamber 24 side.Pressure fan 38 is positioned at directly over the inlet orifices 44a of a wall member 44, and is arranged in the upper side of furnace main body 10.Pressure fan 38 is worked in order to the mode rotated being supplied the atmosphere gas introducing come by gas supply pipe 34 with motor 38a driven vane portion 38b.The atmosphere gas be introduced into is because being heated through heater 36.Then, pressure fan 38 with by heating after atmosphere gas deliver to peripheral passage 42, guide to subsequently the entrance of heating clamber 32 ventilation 44a mode work.The atmosphere gas passed through in heating clamber 32 through outlet passage 44b, and guides upward via peripheral passage 42.That is, circulate in the direction of atmosphere gas by pressure fan 38 along loop direction F.The atmosphere gas circulated by pressure fan 38 is discharged from the exhaust manifolds 40 being formed at furnace main body 10.
Exhaust manifolds 40 are arranged to the atmosphere gas (waste gas) in furnace chamber 24 to discharge.Exhaust manifolds 40 are positioned at the top of outlet passage 44b, and are arranged on the upper surface side of furnace main body 10.Exhaust manifolds 40 are connected with not shown emission-control equipment.The cap 40a that can open, close is provided with inside the furnace chamber 24 of exhaust manifolds 40.By controlling the opening of above-mentioned cap 40a, close and carry out waste gas and to discharge from exhaust manifolds 40 or again return in furnace chamber 24 and to make the adjustments such as it circulates.
Peripheral passage 42 is arranged in furnace chamber 24 and makes atmosphere gas circulation.In the present embodiment, peripheral passage 42 is formed as making that atmosphere gas flows upward from outlet passage 44b, the inlet orifices 44a of the heating clamber 32 that flows towards pressure fan 38 via the top of wall member 44 between heating clamber 32, then flow to subsequently.
Lifting platform 12 is arranged to for loading for the case W being housed in furnace main body 10 inside.Lifting platform 12 is formed as overlooking convexly.Lifting platform 12 is made up of mounting portion 46 and support 48, and wherein, above-mentioned mounting portion 46 is formed as cylindric, and above-mentioned support 48 is formed as cylindric larger than the diameter of mounting portion 46 of diameter.Mounting portion 46 is configured in the top of support 48.The central shaft of support 48 is coaxial with the central shaft of mounting portion 46.In addition, respective central shaft extends towards vertical direction relative to the upper surface in table portion 30.In addition, the side of the mounting portion 46 in lifting platform 12 is formed with the first side 46a, is formed with the second side 48a in the side of support 48.Wall 26a near opening portion 26 when first side 46a is arranged in lifting platform 12 insertion opening portion 26, in addition, the second side 48a is arranged to the gas blow-off outlet 52c near the gas introduction tube 52 being configured at protection walls 18 described later.In addition, relative with the wall 26a of opening portion 26 when the first side 46a is arranged in lifting platform 12 insertion opening portion 26, in addition, the second side 48a is arranged to relative with protection walls 18 described later.In addition, between the first side 46a and the wall 26a of opening portion 26, the first gap g1 is formed with.In addition, between the second side 48a and protection walls 18, the second gap g2 is formed with.First gap g1 is arranged to lifting platform 12 to be inserted heating clamber swimmingly.In addition, because the first gap g1 separates with peripheral passage 42, therefore, the impact being subject to the heat brought by the hot blast at furnace chamber 24 Inner eycle is very little, lower than the temperature in furnace chamber 24.The part by heating clamber 32 side in the mounting portion 46 of lifting platform 12 is formed with mounting plane 46b.Mounting plane 46b is configured with the support plate 50 for loading case W, and wherein, above-mentioned case W is used for being heat-treated thing to ceramic mouldings etc. and accommodates.Support plate 50 is made up of plectane portion 50a and leg 50b.Plectane portion 50a is that level is formed, and is arranged for and loads case W.In addition, leg 50b is arranged to make the case W distance that be equivalent to the height of above-mentioned leg 50b higher than the mounting plane 46b of lifting platform 12.In addition, the face outside the part being configured with mounting portion 46 is formed with block surface 48b abreast with mounting plane 46b.When lifting platform 12 rises, block surface 48b has the function by blocking heat near the 10a side, bottom surface of furnace main body 10.Bottom surface 48c is formed in the part by whirligig 14 side of support 48.The center of bottom surface 48c is connected with the rotating shaft 14a of whirligig 14.
Whirligig 14 is arranged to drive lifting platform 12 to rotate in furnace main body 10.Whirligig 14 is formed by rotating shaft 14a and as the motor 14b of the prime mover for making rotating shaft 14a rotate.One end of rotating shaft 14a is connected with the central authorities of the bottom surface 48c in the support 48 of lifting platform 12.In addition, the other end of rotating shaft 14a is connected with motor 14b.Therefore, the rotation applied by the motor 14b of whirligig 14 and drive lifting platform 12 to rotate.Like this, by driving lifting platform 12 to rotate, just the ceramic mouldings being placed in case W is heated equably, and ceramic mouldings is contacted equably with the atmosphere gas supplied by gas supply pipe 34.In addition, entering to make case W, exiting in heating clamber 32, being provided with the lowering or hoisting gear (not shown) for making lifting platform 12 and whirligig 14 move up and down.
Sealing plate 16 is arranged to prevent atmosphere gas etc. from spilling towards the outside from lift heat-treatment furnace 1.Sealing plate 16 extends to downward from the bottom surface 10a of furnace main body 10 scope at least accommodating lifting platform portion 12 and rotating shaft 14a.Sealing plate 16 and the pivot of lifting platform 12 are formed as cylindric coaxially.In addition, protection walls 18 is formed with in the position more in the inner part of sealing plate 16.In addition, when lifting platform 12 rises, the mode contacted with the bottom of sealing plate 16 is provided with installing plate 20.
Protection walls 18 is arranged to prevent the tarry accumulation thing of adhesive decomposition gas to be attached on the medial surface 16a of sealing plate 16.Protection walls 18 is extended to tarry accumulation thing can be prevented to be attached to scope sealing plate 16 downward from the bottom surface 10a of furnace main body 10.Protection walls 18 and the pivot of lifting platform 12 are formed as cylindric coaxially.In addition, protection walls 18 is formed in than sealing plate 16 position more in the inner part.Therefore, between sealing plate 16 and protection walls 18, space is formed with.Gas introduction tube 52 is configured with in the space between the medial surface 16a and the side 18a of protection walls 18 of above-mentioned sealing plate 16.In addition, the gas blow-off outlet 52c of gas introduction tube 52 described later is such as transversely arranged at the side 18a of protection walls 18 row.Therefore, gas blow-off outlet 52c is radially arranged in the mode of the side 18a around protection walls 18.In addition, when lifting platform 12 insertion opening portion 26, the side 18a of protection walls 18 is relative with the second side 48a of lifting platform 12, and forms the second gap g2.
Gas introduction tube 52 is arranged for the flows stoping and want the adhesive decomposition gas that leaks from the first gap g1 be formed between the first side 46a of the mounting portion 46 and wall 26a of opening portion 26 towards furnace main body 10.Gas introduction tube 52 is made up of gas introduction part 52a and pipe arrangement 52b.Gas introduction part 52a is formed gas blow-off outlet 52c, and this gas blow-off outlet 52c is used for being supplied to the second gap g2 by with the atmosphere gas being supplied the atmosphere gas identical type come by gas supply pipe 34.One end of pipe arrangement 52b is connected with gas introduction part 52a, and the other end of pipe arrangement 52b is connected with supplies for gas (not shown).Gas introduction part 52a is formed between protection walls 18 and sealing plate 16 in the mode (annularly) of the second side 48a around lifting platform 12.Gas blow-off outlet 52c is formed as towards orthogonal direction, the lifting direction with lifting platform 12 and the direction vertically crossing relative to the second side 48a of lifting platform 12 (namely, the direction at the axle center of lifting platform 12).In addition, gas introduction tube 52 is formed in than sealing 28 position more on the lower.
In the such narrow space of the second gap g2, by blowing out the gas with atmosphere gas identical type from the gas blow-off outlet 52c being arranged at protection walls 18, the pressure at the second 48a place, side just can be made to increase.Therefore, the adhesive decomposition gas leaked from the first gap g1 be formed between the first side 46a of the mounting portion 46 and wall 26a of opening portion 26 is wanted just to be difficult to through the second gap g2.Therefore, just stop above-mentioned adhesive decomposition gas towards the flows of furnace main body 10, and be pushed back in furnace chamber 24.In addition, because gas blow-off outlet 52c is centered by the axle of lifting platform 12, radially to be formed around the mode of the second side 48a, therefore, can, when the affecting of rotary actuation of lifting platform 12 can not be subject to, stop adhesive decomposition gas easily through the second gap g2.Then, the adhesive decomposition gas utilizing gas blow-off outlet 52c to be pushed back just is discharged by exhaust manifolds 40.In addition, as mentioned above, the atmosphere gas imported by gas introduction tube 52 is the gas of identical type with the atmosphere gas supplied by gas supply pipe 34, therefore, need not worry to confuse the atmosphere gas in furnace chamber 24.
Installing plate 20 is formed as discoideus coaxially with the pivot of lifting platform 12.Rotating shaft 14a is had at the through of installing plate 20.At the upper surface of installing plate 20, with rotating shaft 14a coaxially, and the mode relative with the bottom of sealing plate 16 is provided with heat resistance seal 20a.In addition, when lifting platform 12 rises, the bottom of sealing plate 16 and heat resistance seal 20a face contact.Heat resistance seal 20a is such as formed by Heat resistant rubber material etc.By this, can prevent atmosphere gas etc. from spilling towards the outside from lift heat-treatment furnace 1.
Furnace main body support 22 is arranged to support furnace main body 10.Furnace main body support 22 is formed in the lower end side of the periphery wall of furnace main body 10.Furnace main body support 22 and the pivot of lifting platform 12 are formed as cylindric coaxially.Lifting platform 12 and whirligig 14 is configured with in the inside of furnace main body support 22.
Then, the action of the lift heat-treatment furnace 1 be made up of said structure is described.First, utilize lowering or hoisting gear that lifting platform 12 is declined, and be positioned in stacked for multiple case W on lifting platform 12.Then, utilize lowering or hoisting gear to make lifting platform 12 increase towards opening portion 26, case W is housed in heating clamber 32.Now, the other end 28c of sealing 28 contacts with the block surface 48b of lifting platform 12, and then, once lifting platform 12 rises, then the opposing party end 28c of sealing 28 just radially bends towards sealing plate 16 in the mode of sliding on block surface 48b.Like this, a part of another face 28d of the other end 28c of sealing 28 contacts with the block surface 48b face of lifting platform 12.In addition, when lifting platform 12 is configured at opening portion 26, mounting plane 46b and the table portion 30 of lifting platform 12 form same level.
Then, utilize the motor 14b of whirligig 14 that lifting platform 12 is rotated towards a direction, and by driving heater 36 and blade part 38b, in furnace chamber 24, produce the circulating current along loop direction F.Then, be supplied to being supplied the atmosphere gas come by gas supply pipe 34 in furnace chamber 24.The atmosphere gas supplied is introduced by pressure fan 38, therefore, through heater 36.By this, atmosphere gas is heated.Atmosphere gas after above-mentioned heating is sent to peripheral passage 42, and is blown in heating clamber 32 via inlet orifices 44a.Now, because lifting platform 12 rotates, therefore, the ceramic mouldings be positioned on case W is uniformly heated, and also contacts equably with atmosphere gas simultaneously.Like this, just ungrease treatment is carried out to the ceramic mouldings on the case W be housed in heating clamber 32.
In above-mentioned degreasing process, adhesive decomposition gas by producing as the ceramic mouldings being heat-treated thing is discharged from exhaust manifolds 40, on the other hand, due to than atmosphere gas weight, therefore, its part just can flow into the first gap g1 between the wall 26a being formed in the first side 46a of lifting platform 12 and the opening portion 26 of furnace main body 10.Now, opening portion 26 is provided with sealing 28, because a part of another face 28d of the other end 28c of sealing 28 contacts with the block surface 48b face of lifting platform 12, therefore, adhesive decomposition gas can be stoped via the first gap g1 easily to flow to the lower side of furnace main body 10.Then, by with supplied the atmosphere gas of the atmosphere gas identical type come by gas supply pipe 34 from the gas blow-off outlet 52c of gas introduction tube 52 being located at protection walls 18, to inject the such narrow space of the second gap g2 around the mode of the second side 48a in the support 48 of lifting platform 12, therefore, can prevent adhesive decomposition gas from liquefying, and can prevent it from flowing into the lower side of furnace main body 10.In addition, tarry accumulation thing also can be prevented to be attached on the side 18a of protection walls 18.In addition, although lifting platform 12 is driven by whirligig 14 and rotates, but can when the affecting of rotary actuation not by lifting platform 12, the part of another face 28d maintaining the other end 28c of sealing 28 contacts with the face of the block surface 48b of lifting platform 12, in addition, due to atmosphere gas can be injected in the mode of the second side 48a of the support 48 around lifting platform 12 from gas introduction tube 52, therefore, can prevent adhesive decomposition gas from flowing into the lower side of furnace main body 10.
Then, after degreasing process terminates, lifting platform 12 is declined, and case W is taken out from lifting platform 12, and transport to next formal firing furnace, come formally to burn till.
In lift heat-treatment furnace 1 of the present invention, in the first gap g1 formed between the wall 26a of opening portion 26 being formed at furnace main body 10 and the first side 46a of lifting platform 12, sealing 28 is set, and the narrow space blow gas that the second gap g2 between the second side 48a and the side 18a of protection walls 18 of gas introduction tube 52 pairs of lifting platforms 12 is such.By being formed in this lift heat-treatment furnace 1, structure after sealing 28 and gas introduction tube 52 are combined, even if drive lifting platform 12 to rotate, adhesive decomposition gas containing tar ingredients is also difficult to easily flow into bottom from furnace main body 10 via the first gap g1, in addition, by utilizing gas introduction tube 52, by atmosphere gas to inject around the mode of the second side 48a towards side, thus can prevent the adhesive decomposition gas flowed into via the first gap g1 from liquefying, it can be made to be difficult to flow into further via the such narrow space of the second gap g2 the lower side of furnace main body 10.In addition, tarry accumulation thing can be prevented to be attached on the side 18a of protection walls 18.Therefore, can prevent from producing tarry accumulation thing in the lower side of furnace main body 10.
In addition, according to lift heat-treatment furnace 1 of the present invention, owing to being provided with cylindric protection walls 18 in the inner side of sealing plate 16, therefore, the tarry accumulation thing that can prevent the adhesive decomposition gas because of the first gap g1 through being formed by lifting platform 12 and opening portion 26 from producing is attached to the medial surface 16a of sealing plate 16.
In addition, in the lift heat-treatment furnace 1 of present embodiment, sealing 28 both can be arranged between the wall 26a of opening portion 26 and the first side 46a of mounting portion 46 as shown in Fig. 3 (a), also can be arranged on as shown in Fig. 3 (b) between the bottom surface 10a of furnace main body 10 and block surface 48b, can also be arranged on as shown in Fig. 3 (c) between the bottom surface 10a of furnace main body 10 and the first side 46a of mounting portion 46.
Sealing 28 shown in Fig. 3 (a) is such as formed as cylindric.In addition, a part of a face 28b of an end 28a of sealing 28 along the lower end side of the wall 26a of opening portion 26, such as, is fixed by screw etc.When lifting platform 12 is inserted into opening portion 26, the other end 28c of sealing 28 is while contacting with the first side 46a of lifting platform 12, and (28d side, another face) bends upward.Consequently, a part of a face 28b of the other end 28c of sealing 28 contacts with the first 46a face, side of lifting platform 12.
Sealing 28 shown in Fig. 3 (b) is such as formed as cylindric.In addition, a part of a face 28b of an end 28a of sealing 28 is such as fixed on the bottom surface 10a of furnace main body 10 by screw etc.When lifting platform 12 insertion opening portion 26, the other end 28c of sealing 28, while contacting with the block surface 48b of lifting platform 12 described later, radially bends towards sealing plate 16 side (28d side, another face) as outer circumferential side.Consequently, a part of a face 28b of the other end 28c of sealing 28 contacts with the block surface 48b face of lifting platform 12.
Sealing 28 shown in Fig. 3 (c) is such as formed as circular.In addition, a part of a face 28b of an end 28a of sealing 28 is such as fixed on the bottom surface 10a of furnace main body 10 by screw etc.At the internal side diameter of sealing 28, there is the other end 28c, be formed with the open pore that diameter is less than the diameter of the mounting portion 46 of lifting platform 12 in the inner side of this other end 28c.Diameter due to open pore is formed less than the diameter of mounting portion 46, therefore, when the mounting portion 46 of lifting platform 12 is inserted into above-mentioned open pore, another face 28d of the other end 28c of sealing 28 contacts with the first 46a face, side of mounting portion 46, simultaneously the other end 28c upward (28d side, another face) bend.
Then, another embodiment of lift heat-treatment furnace is described.Fig. 4 is the schematic sectional view of the lift heat-treatment furnace of another embodiment different from the lift heat-treatment furnace shown in Fig. 1, and Fig. 5 is the enlarged drawing in the B portion of the lift heat-treatment furnace shown in Fig. 4.In addition, in the present embodiment, identical symbol is marked to the part identical with the lift heat-treatment furnace 1 shown in Fig. 1 and Fig. 2, and omits the description.
In the lift heat-treatment furnace 2 of present embodiment, be in protection walls 18, be provided with containment member 60 with lift heat-treatment furnace 1 difference, to replace gas introduction tube 52.Above-mentioned containment member 60 is such as in circular formation.Containment member 60 is arranged to from protection walls 18 projecting towards radial direction.The internal diameter of containment member 60 is larger than the diameter of the mounting portion 46 of lifting platform 12, and less than the diameter of the support 48 of lifting platform 12.At the internal side diameter of containment member 60, there is inner end 60a, be formed with open pore in the inner side of inner end 60a.Diameter due to open pore is formed less than the diameter of support 48, therefore, when the support 48 of lifting platform 12 is inserted into above-mentioned open pore, the lower surface 60c of the inner end 60a of containment member 60 contacts with the second 48a face, side of support 48, and inner end 60a bends upward simultaneously.In addition, containment member 60 is formed by elastomer, such as, formed by silicone, polyurethane or elastomeric material etc.
In the lift heat-treatment furnace 2 of present embodiment, except having the effect identical with lift heat-treatment furnace 1, also there is following effect.That is, replacing gas introduction tube 52 by arranging containment member 60, just not needing to configure gas introduction tube 52 in addition, therefore, do not need to prepare to arrange the equipment required for gas introduction tube 52.
In addition, in the lift heat-treatment furnace 1,2 of present embodiment, the inner side of the sealing plate 16 of the 10a side, bottom surface of furnace main body 10 is provided with protection walls 18, but is not limited to this, also can not protection walls 18 be specially set.In this case, it is preferable that, be provided with the gas blow-off outlet 52c of gas introduction tube 52 at the medial surface 16a of sealing plate 16, and make sealing plate 16 close as far as possible with the second side 48a of lifting platform 12.
In addition, in the lift heat-treatment furnace 1,2 of present embodiment, a part for the sealing 28 of curtain shape both can be fixed on furnace main body 10 side, also can be fixed on lifting platform 12.Therefore, the end of at least one party that the sealing 28 of curtain shape is fixed in an end 28a of sealing 28 and the other end 28c is free end.
In the lift heat-treatment furnace 1,2 of present embodiment, the gas blow-off outlet 52c of gas introduction tube 52 is transversely arranged at the side 18a of protection walls 18 in a row ground at equal intervals, but the present invention is not limited to this, also can in horizontal two row updips tiltedly in arranging in a zigzag.Therefore, as long as the configuration of the gas blow-off outlet 52c of gas introduction tube 52 can inject the structure of atmosphere gas in the such narrow space of the second gap g2 to the second side 48a.
In addition, in the lift heat-treatment furnace 1,2 of present embodiment, the upper surface side of wall member 44 between being configured in furnace chamber 24 as the heater 36 of thermal source, and be configured in central authorities, but the present invention is not limited to this, as long as be arranged on the midway of peripheral passage 42, the lower side of furnace chamber 24 also can be arranged on.
In addition, in the lift heat-treatment furnace 1,2 of present embodiment, be made up of, but the present invention being not limited to this columnar heat-treatment furnace, also can be square tube shape (box-shaped).In addition, lifting platform 12 is not limited to rotary-type turntable, also can be the platform that can only carry out being elevated.Therefore, the shape of lifting platform 12 can be also rectangle, and is not limited to disc-shape.In addition, lifting platform 12 can also be columnar.
Industrial utilizability
Lift thermal processing furnaces of the present invention is if be used as to carry out degreasing to ceramic mouldings or burn till the stove of process.
Claims (1)
1. a lift heat-treatment furnace, has:
Furnace main body;
Opening portion, this opening portion is formed at the bottom of described furnace main body;
Thermal source, this thermal source is configured in the inside of described furnace main body; And
Lifting platform, this lifting platform by with the described opening portion of described furnace main body near or be separated, make to be heat-treated the inside that thing entered or exited described furnace main body,
It is characterized in that, described lift heat-treatment furnace comprises:
The sealing of curtain shape, in the seal portion configurations of this curtain shape gap between the bottom of described furnace main body and described lifting platform;
Gas blow-off outlet, this gas blow-off outlet is configured in the below of described sealing, to be blown out the side of the gas of the atmosphere gas identical type with described furnace main body inside towards described lifting platform;
Sealing plate, sealing plate is extended from the bottom surface side of described furnace main body; And
Protection walls, this protection walls is arranged between the side of described sealing plate and described lifting platform, and extended from the bottom surface side of described furnace main body in the mode of the side near described lifting platform.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011040171 | 2011-02-25 | ||
| JP2011-040171 | 2011-02-25 | ||
| PCT/JP2012/050044 WO2012114779A1 (en) | 2011-02-25 | 2012-01-05 | Elevator-type thermal processing furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103392107A CN103392107A (en) | 2013-11-13 |
| CN103392107B true CN103392107B (en) | 2015-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280009867.2A Active CN103392107B (en) | 2011-02-25 | 2012-01-05 | Elevator-type thermal processing furnace |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5553127B2 (en) |
| CN (1) | CN103392107B (en) |
| WO (1) | WO2012114779A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106222384A (en) * | 2016-10-20 | 2016-12-14 | 神雾环保技术股份有限公司 | Heat-treatment furnace light sealing curtain |
| CN108120286A (en) * | 2018-01-02 | 2018-06-05 | 深圳市晟腾企业管理有限公司 | It is a kind of can automatic loading/unloading vertical type ceramic brick drying burning kiln |
| JP7073016B2 (en) * | 2020-01-10 | 2022-05-23 | 中外炉工業株式会社 | Clean heat treatment equipment |
| JP7432548B2 (en) * | 2021-03-24 | 2024-02-16 | 日本碍子株式会社 | Batch type heat treatment equipment |
| JP7373517B2 (en) * | 2021-03-24 | 2023-11-02 | 日本碍子株式会社 | Batch heat treatment furnace and heat treatment furnace system |
| JP7432549B2 (en) * | 2021-03-24 | 2024-02-16 | 日本碍子株式会社 | Batch heat treatment furnace |
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|---|---|---|---|---|
| JPS61282791A (en) * | 1985-06-05 | 1986-12-12 | 株式会社村田製作所 | Seal structure of batch type atmosphere baking furnace |
| JPH07234079A (en) * | 1994-02-24 | 1995-09-05 | Murata Mfg Co Ltd | Heat treating furnace |
| JP2003050090A (en) * | 2001-08-06 | 2003-02-21 | Murata Mfg Co Ltd | Heat treating furnace |
| CN200989724Y (en) * | 2006-11-17 | 2007-12-12 | 秦文隆 | Up-down vacuum gas furnace |
| CN201402052Y (en) * | 2009-03-06 | 2010-02-10 | 苏州新长光热能科技有限公司 | Vertically lifting discharging machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0510678A (en) * | 1991-07-02 | 1993-01-19 | Murata Mfg Co Ltd | Batch type combustion furnace |
| JPH10227572A (en) * | 1997-02-12 | 1998-08-25 | Murata Mfg Co Ltd | Heat treatment furnace |
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2012
- 2012-01-05 CN CN201280009867.2A patent/CN103392107B/en active Active
- 2012-01-05 JP JP2013500915A patent/JP5553127B2/en active Active
- 2012-01-05 WO PCT/JP2012/050044 patent/WO2012114779A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61282791A (en) * | 1985-06-05 | 1986-12-12 | 株式会社村田製作所 | Seal structure of batch type atmosphere baking furnace |
| JPH07234079A (en) * | 1994-02-24 | 1995-09-05 | Murata Mfg Co Ltd | Heat treating furnace |
| JP2003050090A (en) * | 2001-08-06 | 2003-02-21 | Murata Mfg Co Ltd | Heat treating furnace |
| CN200989724Y (en) * | 2006-11-17 | 2007-12-12 | 秦文隆 | Up-down vacuum gas furnace |
| CN201402052Y (en) * | 2009-03-06 | 2010-02-10 | 苏州新长光热能科技有限公司 | Vertically lifting discharging machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2012114779A1 (en) | 2014-07-07 |
| WO2012114779A1 (en) | 2012-08-30 |
| JP5553127B2 (en) | 2014-07-16 |
| CN103392107A (en) | 2013-11-13 |
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