CN108662911A - Hard alloy coating stove - Google Patents

Hard alloy coating stove Download PDF

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Publication number
CN108662911A
CN108662911A CN201810525833.8A CN201810525833A CN108662911A CN 108662911 A CN108662911 A CN 108662911A CN 201810525833 A CN201810525833 A CN 201810525833A CN 108662911 A CN108662911 A CN 108662911A
Authority
CN
China
Prior art keywords
cooler bin
furnace body
escape pipe
flue gas
intake duct
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201810525833.8A
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Chinese (zh)
Other versions
CN108662911B (en
Inventor
稽建斌
胡筱
胡光强
赵伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZUNYI ZHONGBO CEMENTED CARBIDE CO Ltd
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ZUNYI ZHONGBO CEMENTED CARBIDE CO Ltd
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Priority to CN201810525833.8A priority Critical patent/CN108662911B/en
Publication of CN108662911A publication Critical patent/CN108662911A/en
Application granted granted Critical
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/08Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

The invention belongs to the technical fields of metallurgical ancillary equipment, specifically disclose a kind of hard alloy coating stove, including furnace body, further include the first cooler bin and the second cooler bin for storing flue gas, the temperature of the flue gas is 25 200 DEG C;It is communicated with air intake duct on first cooler bin, the one end of the air intake duct far from the first cooler bin passes through the second cooler bin and is connected to furnace interior, it is also communicated with the first escape pipe on first cooler bin, the one end of first escape pipe far from the first cooler bin is connected to the second cooler bin, and the first escape pipe is equipped with air exhauster;Second cooler bin is equipped with the second escape pipe, and one end far from the second cooler bin is connected to furnace body on the second escape pipe.Present invention aim to address the coating furnaces of the prior art to cool down too fast the problem of leading to deformation of products.

Description

Hard alloy coating stove
Technical field
The invention belongs to the technical fields of metallurgical ancillary equipment, specifically disclose a kind of hard alloy coating stove.
Background technology
In hard alloy deep processing industry production, since hard alloy coating product has case hardness height, wearability The small characteristics such as low with thermal conductivity of good, friction coefficient, therefore high-end hart metal product is both needed to carry out coating procedure.Coating is a kind of Material surface strengthening technology is under the hot environment of thousands of degree, and mixed gas interacts with workpiece surface, in workpiece surface Form a kind of metal or compounds solid state film or coating.After the completion of coating procedure, needs that coating furnace is waited for voluntarily to cool down, beating A large amount of flue gases can be discharged from bonnet during holding heating reaction furnace cover, and flue-gas temperature is at 200-300 DEG C.It deposits in the prior art In following defect:1. high-temperature flue gas can have an adverse effect to control quality, the air themperature in workshop when being discharged;2. the prior art Coating furnace cooling it is too slow, activity time is elongated.
Notification number is that the Chinese patent of CN201997453U discloses Combined coating furnace, includes mainly furnace body, cycle spray Case, air-floating type band steel conveying system, high-power open flame combustion nozzle heating system and strip threading system;Furnace body inner housing sets cycle spray Case recycles and is provided with multiple spray-holes on spray box;Transmission of the strip in coating furnace is passed by air floating band steel transmission system Dynamic, strip is not contacted with any equipment of coating furnace in entire coating furnace;It is divided into dryer section stove along strip direction of transfer furnace body Body, sintering stage furnace body, cooling section furnace body, cycle spray box are divided into dryer section cycle spray box, sintering stage cycle spray box, cooling section It recycles spray box, dryer section and sintering furnace section strip is dried and is sintered using cycle spray box injection, Control for Kiln Temperature is uniform.On It states and is equipped with cooling section in scheme, cooling section cools down coating furnace using air-cooler.But since the temperature in coating furnace is high Up to thousands of degree, alloy product can be caused to be deformed because the temperature difference is too big if directly carrying out cooling.Meanwhile after the completion of coating, coating There is a large amount of flue gas in stove, if being passed directly into cold air, the oxygen content in cold air is far above flue gas, so in cold air Oxygen easily directly react with product under high temperature environment, cause product quality to decline.
Invention content
The purpose of the present invention is to provide a kind of hard alloy coating stoves, too fast with the coating furnace cooling for solving the prior art The problem of leading to deformation of products.
In order to achieve the above object, base case of the invention is:Hard alloy coating stove, including furnace body further include equal The first cooler bin and the second cooler bin of flue gas are stored, the temperature of the flue gas is 25-200 DEG C;On first cooler bin It is communicated with air intake duct, the one end of the air intake duct far from the first cooler bin passes through the second cooler bin and is connected to furnace interior, institute It states and is also communicated with the first escape pipe on the first cooler bin, the one end of the first escape pipe far from the first cooler bin connects with the second cooler bin Logical, the first escape pipe is equipped with air exhauster;Second cooler bin is equipped with the second escape pipe, far from second on the second escape pipe One end of cooler bin is connected to furnace body.
The operation principle of this base case is:Start air exhauster, air exhauster takes out the low-temperature flue gas in the first cooler bin It is sent in the second cooler bin, forms negative pressure in the first cooler bin at this time and from stove body absorption high-temperature flue gas.When high-temperature flue gas into When entering to air intake duct, since part air intake duct is located in the second cooler bin, so when high-temperature flue gas is at the part of air intake duct Low-temperature flue gas in the second cooler bins of Shi Huiyu carries out heat exchange, and the temperature of high-temperature flue gas can continuously decrease, in the second cooler bin Low-temperature flue gas temperature gradually rise.After being mixed with low-temperature flue gas after high-temperature flue gas enters the first cooler bin, high-temperature flue gas Temperature further decrease.Due to being constantly passed through low-temperature flue gas in the second cooler bin, so the low-temperature flue gas in it can be from second Furnace body is flowed in escape pipe, and the temperature of furnace interior is made to reduce.
The advantageous effect of this base case is:1., this programme different from the method that the prior art is passed directly into cold air It is middle to be sent to high-temperature flue gas in the first cooler bin by air intake duct, and high-temperature flue gas can be with the low-temperature flue gas in the second cooler bin Heat exchange is carried out, so the low-temperature flue gas entered in furnace body from the second cooler bin has certain temperature.High temperature simultaneously The temperature of flue gas is higher, and the heat for passing to low-temperature flue gas is more, and the temperature raising of low-temperature flue gas is faster, so being passed into stove Low-temperature flue gas in body will not make furnace body drop to very low temperature moment, but be gradually reduced, and the product in furnace body would not be because The temperature difference is too big and deforms.2. in the present solution, last time remaining fume collection can get up, first is stored in after cooling In cooler bin and the second cooler bin, in case cooling uses next time, so the oxygen content of low-temperature flue gas and high-temperature flue gas, solid Granule content, carbon dioxide content etc. are all not much different, and after low-temperature flue gas enters furnace body, would not react with product, So that product quality is ensured.
Further, the part inside the second cooler bin is located on the air intake duct in setting of wriggling.Using this programme, air-breathing Pipe is longer positioned at the part path of the second cooler bin, and the heat exchange area of high-temperature flue gas and the second cooler bin becomes larger, and heat transfer effect is more It is good.
Further, the connectivity part of the air intake duct and furnace body is located at the lower part of furnace body, second escape pipe and furnace body Connectivity part is located at the top of furnace body.Using this programme, the lower flue gas of temperature can sink, so after low-temperature flue gas enters furnace body It can gradually be flow to lower portion of furnace body from upper of furnace body, low-temperature flue gas can contact and make with most high-temperature flue gas in furnace body It cools down.
Further, it is equipped with check valve in second escape pipe, switching device, the switch dress are equipped in the air intake duct It sets including baffle, piston cylinder, torsional spring and mandril, the baffle is rounded and blocks air intake duct, and lateral is provided on baffle One straight slot, the piston cylinder are arranged in the bottom of the first straight slot, and piston cylinder is loaded with water, and piston is slidingly sealed in piston cylinder, Piston is located at the top of water, and the top of piston is equipped with spring groove, and the bottom of spring groove is equipped with spring, and the top of spring, which is equipped with, to be slided Column, traveller are equipped with sliding block, and the upper surface of traveller is equipped with wedge surface, and sliding block offsets with piston, is equipped with vertically on the sliding block up and down Through-hole, sliding block are set in by through-hole on traveller, and one end of the torsional spring is fixed in air intake duct, the other end of the torsional spring with Mandril is affixed, and mandril is directed at through-hole.Using this programme, in the second escape pipe, flue gas can only flow out the second escape pipe and can not be into Enter the second escape pipe, the flue gas in furnace body is avoided to blow back into the second cooler bin.Meanwhile product is when carrying out coating, in furnace body Extreme temperatures, at gaseous state, the piston in piston cylinder moves up water evaporation at this time, and band movable slider moves upwards when piston moves up Dynamic, the through-hole on sliding block is gradually close with mandril at this time and contacts, and mandril can be gradually inserted in through-hole, and mandril can also be by traveller It pushes down on, mandril and sliding block can block air intake duct at this time.After coating, air exhauster starts, shape in air intake duct At negative pressure, furnace body pressure is more than the pressure in aspiration channel, and the air pressure in furnace body squeezes mandril, keeps the elasticity that mandril overcomes torsional spring extensive It answers power and is rotated to the direction of aspiration channel, the high-temperature flue gas of furnace interior will be inhaled into air intake duct at this time.
Further, the mandril is equipped with the second lateral straight slot, and the both ends of the second straight slot are slidingly sealed with sealing column, It is loaded with mercury in second straight slot.Using this programme, when product is when carrying out coating treatment, since furnace interior temperature is high, institute Mercury vapor can be flashed to mercury, mercury vapour pushes sealing column to the both ends of the second straight slot at this time so that sealing column energy It is enough to offset with the through-hole or so on sliding block.After product coating is disposed, furnace body cools completely, air exhauster, water are closed Liquid is all gradually become again with mercury, and sealing column and piston can all reset.Due to mercury boiling point be higher than water, so sealing column prior to Piston reset, when sealing column resets, the through-hole of sealing column and sliding block progressively disengages, and sliding block moves gradually downward at this time, until Sliding block offsets up and down with piston.When piston reset, piston can be resetted with movable slider, and mandril is detached with traveller at this time, and traveller exists It is gradually inserted in through-hole under the action of spring.
Further, the temperature of flue gas is 100 DEG C in first cooler bin and the second cooler bin.100 DEG C of flue gases and furnace body In high-temperature flue gas contact after, it is preferable to the cooling-down effect of high-temperature flue gas.
Description of the drawings
Fig. 1 is the structural schematic diagram of embodiment hard alloy coating stove;
Fig. 2 is the cross-section diagram of Fig. 1 aspiration channel switching devices.
Specific implementation mode
Below by specific implementation mode, the present invention is described in further detail:
Reference numeral in Figure of description includes:Furnace body 10, the first cooler bin 20, aspiration channel 21, baffle 22, first are logical Slot 23, piston cylinder 24, piston 25, spring groove 26, spring 27, traveller 28, sliding block 29, through-hole 30, torsional spring 31, mandril 32, second Straight slot 33, sealing column 34, air exhauster 40, the first escape pipe 41, the second escape pipe 42, check valve 43, the second cooler bin 50, switch Device 51.
As shown in Figure 1, the present embodiment hard alloy coating stove, including furnace body 10, the first cooler bin 20 and the second cooler bin 50.The low-temperature flue gas that temperature is 100 DEG C is stored in first cooler bin 20 and the second cooler bin 50.Connect on first cooler bin 20 It is connected with aspiration channel 21, the right end of aspiration channel 21 passes through the tank wall of the second cooler bin 50 to enter in the second cooler bin 50, and is located at Aspiration channel 21 in second cooler bin 50 wriggles setting, the right end of aspiration channel 21 be then passed through the second cooler bin 50 and with furnace body 10 Lower part is connected to.The first escape pipe 41 is also communicated on first cooler bin 20, the right end of the first escape pipe 41 is communicated with air exhauster, takes out The second escape pipe 42 is communicated on mechanism of qi, the right end of the second escape pipe 42 is connected to the top of furnace body 10.In conjunction with Fig. 2, aspiration channel Switching device 51 is equipped in 21, switching device 51 includes baffle 22 and piston cylinder 24.Baffle 22 is rounded and aspiration channel 21 is close It seals.The first straight slot 23 is laterally provided on baffle 22, the insertion of piston cylinder 24 is arranged in the lower end of the first straight slot 23, piston cylinder 24 Inner wall is flushed with the side wall of the first straight slot 23.It is slidingly sealed with piston 25 in piston cylinder 24, water, water are also loaded in piston cylinder 24 Positioned at the lower section of piston 25.The upper surface of piston 25 is equipped with spring groove 26, and spring 27, the upper end of spring 27 are equipped in spring groove 26 It is connected with traveller 28.The upper end of piston 25 is additionally provided with sliding block 29, and sliding block 29 offsets with about 25 piston, the width of sliding block 29 and One straight slot 23 it is of same size.Through-hole 30 is equipped at the center of sliding block 29 vertically, traveller 28 is inserted into through-hole 30.First straight slot 23 upper end is equipped with torsional spring slot, and torsional spring 31 is equipped in torsional spring slot, and the right end and torsional spring slot of torsional spring 31 are affixed, and the left end of torsional spring 31 is solid It is connected to mandril 32, the width of mandril 32 is less than through-hole 30 and mandril 32 is aligned with through-hole 30.It is horizontal logical equipped with second on mandril 32 The both ends of slot 33, the second straight slot 33 are slidingly sealed with sealing column 34, and mercury is also loaded in the second straight slot 33, and mercury is located at two Between a sealing column 34.
When it is implemented, after the product coating in furnace body 10 is disposed, extreme temperatures in furnace body 10 at this time.Due to Partial fume in furnace body 10 can enter from aspiration channel 21 and be contacted with piston cylinder 24 and mandril 32, so the water of piston cylinder 24 And the mercury in mandril 32 can all flash to gaseous state.Water can push piston 25 to move up after becoming gaseous state, and piston 25 is with movable slider 29 move up, and after sliding block 29 moves up, mandril 32 is gradually inserted in through-hole 30 and pushes down on traveller 28 in spring groove 26, this When traveller 28 leave through-hole 30 completely.Mercury can push the both sides movement to the left and right of sealing column 34, sealing column 34 to slide after becoming gaseous state After going out the second straight slot 33 of mandril 32, sealing column 34 can offset with through-hole 30.Start air exhauster, air exhauster is cooled down first Low-temperature flue gas in case 20 is drawn into the second cooler bin 50, forms negative pressure in aspiration channel 21 at this time, and the air pressure in furnace body 10 is big Air pressure in aspiration channel 21, mandril 32 overcome the elastic restoring force of torsional spring 31 cold to first in furnace body 10 under the action of air pressure But the direction rotation of case 20, due to the disengaging through-hole 30 of traveller 28, mandril 32 is inserted into through-hole 30, so mandril 32 can band movable slider 29 rotate, and the high-temperature flue gas in furnace body 10 can enter in aspiration channel 21.It wriggles when high-temperature flue gas flow to aspiration channel 21 Part when, high-temperature flue gas can with the low-temperature flue gas in the second cooler bin 50 carry out heat exchange, so the temperature of high-temperature flue gas by Gradually reduce, and the temperature of low-temperature flue gas gradually rises.It can be with the low temperature in it after high-temperature flue gas enters the first cooler bin 20 Flue gas mixes, and further decreases the temperature of high-temperature flue gas, finally, low-temperature flue gas in the second cooler bin 50 from the second discharge pipe into Enter into furnace body 10, cooling processing is carried out to furnace body 10.
Above-described is only the embodiment of the present invention, and the common sense such as well known concrete structure and characteristic are not made herein in scheme Excessive description.It, without departing from the structure of the invention, can be with it should be pointed out that for those skilled in the art Several modifications and improvements are made, these should also be considered as protection scope of the present invention, these all do not interfere with what the present invention was implemented Effect and patent practicability.

Claims (6)

1. hard alloy coating stove, including furnace body, it is characterised in that:It further include the first cooler bin and second for storing flue gas The temperature of cooler bin, the flue gas is 25-200 DEG C;Air intake duct is communicated on first cooler bin, the air intake duct is far from One end of one cooler bin passes through the second cooler bin and is connected to furnace interior, and the first outlet is also communicated on first cooler bin Pipe, the one end of the first escape pipe far from the first cooler bin are connected to the second cooler bin, and the first escape pipe is equipped with air exhauster;It is described Second cooler bin is equipped with the second escape pipe, and one end far from the second cooler bin is connected to furnace body on the second escape pipe.
2. hard alloy coating stove according to claim 1, it is characterised in that:It is located at the second cooler bin on the air intake duct Internal part is in setting of wriggling.
3. hard alloy coating stove according to claim 2, it is characterised in that:The connectivity part position of the air intake duct and furnace body In the lower part of furnace body, the connectivity part of second escape pipe and furnace body is located at the top of furnace body.
4. the hard alloy coating stove according to any one of claim 1-3, it is characterised in that:Second escape pipe It is interior to be equipped with check valve, it is equipped with switching device in the air intake duct, the switching device includes baffle, piston cylinder, torsional spring and mandril, The baffle is rounded and blocks air intake duct, is provided with the first lateral straight slot on baffle, and the piston cylinder insertion setting is the The bottom of one straight slot, piston cylinder are loaded with water, and piston is slidingly sealed in piston cylinder, and piston is located at the top of water, the top of piston End is equipped with spring groove, and the bottom of spring groove is equipped with spring, and the top of spring is equipped with traveller, and traveller is equipped with sliding block, traveller it is upper End face is equipped with wedge surface, and sliding block offsets up and down with piston, is equipped with through-hole on the sliding block vertically, sliding block is set in traveller by through-hole On, the torsional spring insertion is arranged at the top of the first straight slot, and one end of torsional spring and baffle are affixed, and the other end and mandril of torsional spring are solid It connects, mandril is directed at through-hole.
5. hard alloy coating stove according to claim 4, it is characterised in that:It is logical that the mandril is equipped with lateral second The both ends of slot, the second straight slot are slidingly sealed with sealing column, and mercury is loaded in the second straight slot.
6. hard alloy coating stove according to claim 5, it is characterised in that:First cooler bin and the second cooler bin The temperature of middle flue gas is 100 DEG C.
CN201810525833.8A 2018-05-28 2018-05-28 Hard alloy coating furnace Active CN108662911B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810525833.8A CN108662911B (en) 2018-05-28 2018-05-28 Hard alloy coating furnace

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Application Number Priority Date Filing Date Title
CN201810525833.8A CN108662911B (en) 2018-05-28 2018-05-28 Hard alloy coating furnace

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CN108662911A true CN108662911A (en) 2018-10-16
CN108662911B CN108662911B (en) 2019-09-06

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57145164U (en) * 1981-03-03 1982-09-11
US4590049A (en) * 1983-08-16 1986-05-20 Gernot Staudinger Method for dry desulfurization of exhaust gas
CN101074848A (en) * 2007-04-03 2007-11-21 鲜荣忠 System for treating kiln waste gas without external energy
CN101476730A (en) * 2009-01-13 2009-07-08 王惠生 Energy-saving rubbish and dangerous waste incineration processing method
CN204923925U (en) * 2015-09-14 2015-12-30 上海泰豪智能节能技术有限公司 Tunnel cave heat pipe formula preheating of air and material cooling device
CN106287769A (en) * 2016-08-09 2017-01-04 江苏杰英能源科技有限公司 A kind of flue gas cold treatment device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57145164U (en) * 1981-03-03 1982-09-11
US4590049A (en) * 1983-08-16 1986-05-20 Gernot Staudinger Method for dry desulfurization of exhaust gas
CN101074848A (en) * 2007-04-03 2007-11-21 鲜荣忠 System for treating kiln waste gas without external energy
CN101476730A (en) * 2009-01-13 2009-07-08 王惠生 Energy-saving rubbish and dangerous waste incineration processing method
CN204923925U (en) * 2015-09-14 2015-12-30 上海泰豪智能节能技术有限公司 Tunnel cave heat pipe formula preheating of air and material cooling device
CN106287769A (en) * 2016-08-09 2017-01-04 江苏杰英能源科技有限公司 A kind of flue gas cold treatment device

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