CN103673588A - Porous rotary kiln and connecting method between air duct slot body and cylinder body thereof - Google Patents
Porous rotary kiln and connecting method between air duct slot body and cylinder body thereof Download PDFInfo
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- CN103673588A CN103673588A CN201410002910.3A CN201410002910A CN103673588A CN 103673588 A CN103673588 A CN 103673588A CN 201410002910 A CN201410002910 A CN 201410002910A CN 103673588 A CN103673588 A CN 103673588A
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Abstract
The invention discloses a porous rotary kiln which comprises a cylinder body of a kiln body and an air duct system; the ventilation space of the air duct system is formed by enclosing a circular air duct slot body and a cover body; the air duct slot body is sleeved on the outer side of the cylinder body and rotates synchronous with the cylinder body; the air duct slot body and the cylinder body are separated in a radial direction to form a circular space; the air duct slot body is connected with the cylinder body through a plurality of elastic connecting pieces; the elastic connecting pieces are arranged at intervals along the circumferential direction of the cylinder body. According to the porous rotary kiln with an optimized structure, the connecting mode between the air duct slot body and the cylinder body of the kiln body can be improved, the heat expansion deformation of the cylinder body can be absorbed, so that the heat expansion of the cylinder body of the kiln body does not act on the air duct slot body, and the connection reliability is effectively improved. On the basis, the invention also provides a connecting method between the air duct slot body and cylinder body of the porous rotary kiln.
Description
Technical field
The present invention relates to rotary kiln technical field, particularly the method for attachment of a kind of porous rotary kiln and air channel cell body and cylindrical shell.
Background technology
At present, rotary kiln is widely used in numerous production industries such as building materials, metallurgy, chemical industry, mine and environmental protection, by solid material being carried out to machinery, physical or chemical treatment, for industry-by-industry provides required material.Wherein, porous rotary kiln has the features such as the thermal efficiency is high, floor space is little, easy to operate, has been widely used among above-mentioned industry.
In the course of work, material enters the cylindrical shell of polychannel tunnel kiln from material feeding end, carries out the concurrent looks of roasting and answer chemical reaction in kiln, then from delivery end, discharges.Kiln body cylindrical shell is provided with equally distributed air inlet, by controlling the ventilation of these air inlets, regulates the atmosphere in polychannel tunnel kiln, thereby reaches the object of accurate control sintering temperature and chemical reaction.Wherein, the air inlet of kiln body cylindrical shell is the terminal use of pressure wind, is synchronized with the movement, and is fixed as the air blast of power source with kiln body, and air blast to the pressure wind induction system between kiln body air inlet need to arrange a pressure wind and pass on distributor.Polychannel tunnel kiln arranges polychannel tunnel kiln air-duct apparatus before being mostly chosen in kiln body air inlet, to carry out the distribution of passing on of pressure wind.
Refer to Fig. 1 and Fig. 2, wherein, Fig. 1 is the partial cutaway schematic of existing polychannel tunnel kiln air-duct apparatus, and Fig. 2 is the matching relationship schematic diagram that this air-duct apparatus and polychannel tunnel kiln cylindrical shell are set.
This air-duct apparatus 90 mainly comprises interior cover body 10, outer outlet body 20 and seal 30.The blower fan (not shown) that is fixed on ground is sent pressure wind into the airspace 40 that interior cover body 10 and outer outlet body 20 enclose formation by interface, pressure wind, through the pressure wind outlet 50 on lower cover, is delivered to wind minute aid distributing pipe 80 of kiln body 60 air inlets 70.Wherein, outer outlet body 20 is static, interior cover body 10 synchronously rotates with polychannel tunnel kiln cylindrical shell 60, there is relative motion in outer outlet body 20 and interior cover body 10, be provided with seal 30 between the two and will between outer outlet body 20 and interior cover body 10, have fit clearance sealing, thereby block reliably the pressure wind of inside, air channel, in order to avoid leak out, cause energy consumption to strengthen and environmental pollution.
In order to ensure interior cover body 10, be connected with the reliable of cylindrical shell 60, adopt and rigidly fix connected mode between the two, to meet Rigidity and strength requirement.Yet, polychannel tunnel kiln belongs to Thermal Equipment, during its running, the temperature of device interior is very high, cylindrical shell will produce larger thermal deformation thus, under long-term use state, both rigidly fix junction and will occur breakage, affect on the one hand the reliability service of complete machine, its repair and maintenance cost cannot be effectively controlled simultaneously.
In view of this, urgently the connected mode for existing rotary kiln air-duct apparatus and kiln body cylindrical shell is optimized design, to adapt to heat expansion amount and to alter on the momental basis of kiln, improves the job stability at link position place.
Summary of the invention
For above-mentioned defect, the technical problem that the present invention solves is, a kind of porous rotary kiln of structure optimization is provided, and with by improving the connected mode of air channel cell body and kiln body cylindrical shell, further optimizes its connection reliability.On this basis, the present invention also provides a kind of air channel cell body and cylindrical shell method of attachment of porous rotary kiln.
Porous rotary kiln provided by the invention, comprises kiln body cylindrical shell and ducting system, and the airspace of described ducting system is enclosed and formed by looped duct cell body and cover body, and described air channel cell body is set in outside synchronous rotation of described cylindrical shell; Described air channel cell body and described cylindrical shell radial separation form annular space, and described air channel cell body is connected with described cylindrical shell by a plurality of Flexible Connectors, and a plurality of described Flexible Connectors arrange along the circumferential interval of described cylindrical shell.
Preferably, in two junctions of described Flexible Connector and described air channel cell body and described cylindrical shell, a place is for being fixedly connected with, and another place is hinged, the axis parallel setting of described hinged axial line and described cylindrical shell.
Preferably, in the described annular space of described Flexible Connector between described air channel cell body and described cylindrical shell.
Preferably, described Flexible Connector is tabular, and it is fixedly connected with end and has a cambered surface section of fitting fixing with the interior perimeter surface of described air channel cell body or the outer surface of described cylindrical shell.
Preferably, the both sides of described air channel cell body are fixedly installed the Connection Block being axially oppositely arranged, the Flexible Connector described Connection Block by jointed shaft and both sides interior along hinged respectively described in each.
Preferably, the end of described Flexible Connector is set on described jointed shaft, and the two axial ends of described jointed shaft all stretches out in the described Connection Block of both sides, and removably connects by fixture and corresponding described Connection Block.
Preferably, described Flexible Connector is made by spring steel.
Preferably, described in each, the stiffness coefficient of Flexible Connector is identical.
The method of attachment of porous rotary kiln air channel cell body provided by the invention and cylindrical shell, described porous rotary kiln comprises kiln body cylindrical shell and ducting system, the airspace of described ducting system is enclosed and is formed by looped duct cell body and cover body, and described air channel cell body is set in outside synchronous rotation of described cylindrical shell; Described in radial separation, air channel cell body and described cylinder-shaped circularize space, to adapt to the heat amount of rising of described cylindrical shell; Adopt elastic connection way to set up being connected of described air channel cell body and described cylindrical shell.
Preferably, described elastic connection way is arranged and forms along the circumferential interval of described cylindrical shell by a plurality of described Flexible Connectors; Described in each in Flexible Connector and two junctions described air channel cell body and described cylindrical shell, a place for being fixedly connected with, another place is for hinged, the axis parallel setting of described hinged axial line and described cylindrical shell.
The air channel cell body and the cylindrical shell that the present invention is directed to porous rotary kiln have proposed a kind of brand-new connected mode, particularly, between this air channel cell body and cylindrical shell, radial separation is formed with annular space, and air channel cell body is connected with cylindrical shell by a plurality of Flexible Connectors, thereby set up elastic connection way between the two.When polychannel tunnel kiln cylindrical shell generation heat rises, Flexible Connector can form elastic deformation, thereby the hot bulging that can absorb cylindrical shell becomes, and has avoided the heat of the kiln body cylindrical shell phenomenon that rises to act on air channel cell body; So arrange, can evade the impact that kiln body cylindrical shell heat rises and is reliably connected with air channel cell body for it completely, and then guarantee the complete machine job stability of porous rotary kiln, greatly reduce its repair and maintenance cost.
In preferred version of the present invention, in two junctions of this Flexible Connector and air channel cell body and cylindrical shell: a place for being fixedly connected with, another place is for hinged, and the axis parallel setting of hinged axial line and cylindrical shell.When Flexible Connector, under heat rises by cylindrical shell effect, occurs the elastically-deformable while, the position at the place of being articulated and connected of Flexible Connector relatively rotates, like this, the heat of the polychannel tunnel kiln cylindrical shell phenomenon that rises is further eliminated the impact of air channel cell body, thereby evade completely, produce structural stress, can better improve the reliability that both connect.
In another preferred version of the present invention, the end that is fixedly connected with of tabular Flexible Connector has the cambered surface section of fitting fixing with the interior perimeter surface of air channel cell body or the outer surface of cylindrical shell, its arc length and air channel cell body or cylindrical shell matching surface adapt, improve laminating tight ness rating, guaranteed that Flexible Connector is fixedly connected with welding or the riveting quality of end, further improves the bonding strength of air channel cell body and kiln body cylindrical shell.
In another preferred version of the present invention, the both sides of air channel cell body are fixedly installed the Connection Block being axially oppositely arranged, and each Flexible Connector is the Connection Block by jointed shaft and both sides interior along hinged respectively.During on-the-spot installation, Connection Block is installed from both sides, easily guarantees design size when hoisted in position, installation welding; Meanwhile, when syndeton generation breakage or fatigue damage, only remove Connection Block, needn't remove the laggard line operate of air channel cell body.So arrange, can be convenient to the on-the-spot installation of whole ducting system and maintain and replace.
Accompanying drawing explanation
Fig. 1 is the partial cutaway schematic of existing polychannel tunnel kiln air-duct apparatus;
Fig. 2 is the matching relationship schematic diagram that this air-duct apparatus and polychannel tunnel kiln cylindrical shell are set;
Fig. 3 shows the overall structure schematic diagram of rotary kiln ducting system described in the specific embodiment;
Fig. 4 is the D-D cutaway view of Fig. 3;
Fig. 5 is the E portion enlarged diagram of Fig. 3.
In Fig. 3-Fig. 5:
Air channel cell body 1, cover body 2, seal 3, fixed support 4, cylindrical shell 5, Flexible Connector 6, cambered surface section 61, hinged cover 62, Connection Block 7, jointed shaft 8.
The specific embodiment
Core of the present invention is to have proposed a kind of brand-new connected mode for the air channel cell body of porous rotary kiln and cylindrical shell, to overcome the existing existing drawback of mode that is fixedly connected with.This method of attachment is set in outside the synchronous functional characteristics of rotating of cylindrical shell based on air channel cell body, first radial separation air channel cell body and cylinder-shaped circularize space, to adapt to the heat amount of rising producing in the cylindrical shell course of work, adopt elastic connection way to set up being connected of air channel cell body and cylindrical shell simultaneously, Flexible Connector can form elastic deformation, thereby the hot bulging that can absorb cylindrical shell becomes, avoided the heat of the kiln body cylindrical shell phenomenon that rises to act on air channel cell body.Without loss of generality, below in conjunction with Figure of description, illustrate present embodiment.
Refer to Fig. 3 and Fig. 4, wherein, Fig. 3 shows the overall structure schematic diagram of rotary kiln ducting system described in present embodiment, the D-D cutaway view that Fig. 4 is Fig. 3.This rotary kiln ducting system mainly comprises looped duct cell body 1, cover body 2, two groups of seals 3 and fixed supports 4, and looped duct cell body 1 and cover body 2 enclose roughly air channel airspace A in the form of a ring of formation.
Wherein, air channel cell body 1 is fixedly connected with for the cylindrical shell 5 with rotary kiln, with kiln body cylindrical shell 5 is synchronous, rotates as moving link, and the pressure wind of the gas that enters air channel airspace A from being opened in air channel cell body 1 on exports each air inlet place that B is dispensed to cylindrical shell 5.
Wherein, cover body 2 covers are loaded on the outside of air channel cell body 1, with respect to air channel cell body 1, for being fixedly installed member, be fixedly installed on the air blast (not shown) on basis, ground by being opened in the pressure wind entrance C on cover body 2, pressure wind is sent into air channel airspace A.Here, the noun of locality " inner side " and " outside " are to be that benchmark defines according to the axial line of kiln body cylindrical shell 5, to know the relative position relation of expressing between cover body 2 and air channel cell body 1, are to be understood that, the use in " inner side " and " outside " does not form the restriction to this programme, hereinafter identical.
Wherein, two groups of seals 3 are separately positioned on the both sides gap location between cover body 2 and air channel cell body 1, along cylindrical shell 5 axially take the both sides that airspace A is basis of reference, one group of seal need to be set respectively, to set up the positiver sealing having between relative motion member air channel cell body 1 and cover body 2.
Wherein, fixed support 4 is fixedly connected with cover body 2, to support cover body 2 on static basis.
In order to obtain reliable connection the between air channel cell body 1 and kiln body cylindrical shell 5, this programme looks for another way and has proposed a kind of syndeton, asks a step shown in Figure 5, the E portion enlarged diagram that Fig. 5 is Fig. 3.
As shown in the figure, air channel cell body 1 forms annular space F with cylindrical shell 5 radial separation, and the difference of the outer surface diameter of the inner surface diameter of air channel cell body 1 and cylindrical shell 5 forms this annular space F.And air channel cell body 1 is connected with cylindrical shell 5 by a plurality of Flexible Connectors 6, when polychannel tunnel kiln cylindrical shell 5 generation heat rise, Flexible Connector 6 can form elastic deformation, thereby can absorb the hot bulging change of cylindrical shell 5, has avoided the heat of the kiln body cylindrical shell phenomenon that rises to act on air channel cell body; Meanwhile, a plurality of Flexible Connectors 6 circumferentially uniformly-spaced arrange along cylindrical shell 5, thereby all carry, absorb the hot bulging change of cylindrical shell 5.
As shown in the figure, Flexible Connector described in this programme 6, welds for being fixedly connected with the junction of cylindrical shell 5; And Flexible Connector 6 is hinged with the junction of air channel cell body 1, the axis parallel setting of the axial line that this is hinged and cylindrical shell 5.Like this, when Flexible Connector 6, under heat rises by cylindrical shell 5 effect, occurs the elastically-deformable while, the position at the place of being articulated and connected of Flexible Connector 6 relatively rotates, and like this, the heat of polychannel tunnel kiln cylindrical shell 5 phenomenon that rises is completely eliminated the impact of air channel cell body 1.Certainly, this hinged relationship also can be arranged on the junction of Flexible Connector 6 and cylindrical shell 5, and Flexible Connector 6 adopts with the junction of air channel cell body 1 mode that is fixedly connected with, above-mentioned annexation (not shown) is oppositely set, equally can so that Flexible Connector 6 under heat rises by effect in deformation position relatively rotate.
Wherein, Flexible Connector 6 can be arranged in the annular space F between air channel cell body 1 and cylindrical shell 5, and thus, the setting of syndeton can not take axial assembly space, utilizes this space to make syndeton compacter.
Function based on strain needs, and Flexible Connector 6 can design according to practical engineering application, and for example, the global shape of Flexible Connector 6 is roughly tabular, in fact, and also can be for shaft-like or other is irregularly shaped.As shown in Figure 5, this tabular Flexible Connector 6 be fixedly connected with end, there is the cambered surface section 61 of fitting fixing with cylindrical shell 5 outer surfaces with the link of the outer surface of cylindrical shell 5, the arc length of cambered surface section 61 and cylindrical shell 5 matching surfaces adapt, improve laminating tight ness rating, guaranteed that Flexible Connector is fixedly connected with the welding quality of end.Obviously, if Flexible Connector 6 is to be fixedly connected with the junction of air channel cell body 1, this cambered surface section should be adaptive with the interior perimeter surface laminating of air channel cell body 1.
In order to promote the operability of the on-the-spot installation of whole ducting system and maintain and replace, can be improved further for the hinged implementation of Flexible Connector 6.Shown in Fig. 4, in the both sides of air channel cell body 1, along being fixedly installed the Connection Block 7 being axially oppositely arranged, each Flexible Connector 6 is the Connection Block 7 by jointed shaft 8 and both sides interior along hinged respectively.Here, the end of tabular Flexible Connector 6 has hinged cover 62, and is set on jointed shaft 8, as shown in Figure 5 by this hinged cover 62; The two axial ends of this jointed shaft 8 all stretches out in the Connection Block 7 of both sides, and can removably connect with corresponding Connection Block by fixture, have simple in structure, the feature of reliable in action.
During on-the-spot installation, Connection Block 7 can be installed from both sides, easily guarantees design size when hoisted in position, installation welding; Meanwhile, when syndeton generation breakage or fatigue damage, only remove Connection Block 7, needn't remove the laggard line correlation operation of air channel cell body 1.In addition, this programme can guarantee along polychannel tunnel kiln cylindrical shell 5 axial directions and the 1 side laminating of air channel cell body tight, and with the perpendicularity of polychannel tunnel kiln cylindrical shell 5, like this, can guarantee the bonding strength that Connection Block 7 is connected Flexible Connector 6 and Connection Block 7 with bonding strength and the bearing pin 7 of air channel cell body 1.
This Flexible Connector 6 can preferably be made by spring steel, and the stiffness coefficient of each Flexible Connector 6 is identical, guarantee thus stress balance in whole circumferential direction, realized between ducting system and polychannel tunnel kiln cylindrical shell and can absorb flexibly connecting of heat expansion amount on the one hand, and there is enough intensity.
The foregoing is only the preferred embodiment of the present invention, do not form limiting the scope of the present invention.Any any modification of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in claim protection domain of the present invention.
Claims (10)
1. porous rotary kiln, comprises kiln body cylindrical shell and ducting system, and the airspace of described ducting system is enclosed and formed by looped duct cell body and cover body, and described air channel cell body is set in outside synchronous rotation of described cylindrical shell; It is characterized in that, described air channel cell body and described cylindrical shell radial separation form annular space, and described air channel cell body is connected with described cylindrical shell by a plurality of Flexible Connectors, and a plurality of described Flexible Connectors arrange along the circumferential interval of described cylindrical shell.
2. porous rotary kiln according to claim 1, it is characterized in that, in two junctions of described Flexible Connector and described air channel cell body and described cylindrical shell, a place for being fixedly connected with, another place is for hinged, the axis parallel setting of described hinged axial line and described cylindrical shell.
3. porous rotary kiln according to claim 2, is characterized in that, in the described annular space of described Flexible Connector between described air channel cell body and described cylindrical shell.
4. according to the porous rotary kiln described in claim 2 or 3, it is characterized in that, described Flexible Connector is tabular, and it is fixedly connected with end and has a cambered surface section of fitting fixing with the interior perimeter surface of described air channel cell body or the outer surface of described cylindrical shell.
5. porous rotary kiln according to claim 4, is characterized in that, the both sides of described air channel cell body are fixedly installed the Connection Block being axially oppositely arranged, the Flexible Connector described Connection Block by jointed shaft and both sides interior along hinged respectively described in each.
6. porous rotary kiln according to claim 5, it is characterized in that, the end of described Flexible Connector is set on described jointed shaft, and the two axial ends of described jointed shaft all stretches out in the described Connection Block of both sides, and removably connects by fixture and corresponding described Connection Block.
7. porous rotary kiln according to claim 4, is characterized in that, described Flexible Connector is made by spring steel.
8. porous rotary kiln according to claim 7, is characterized in that, described in each, the stiffness coefficient of Flexible Connector is identical.
9. the method for attachment of porous rotary kiln air channel cell body and cylindrical shell, described porous rotary kiln comprises kiln body cylindrical shell and ducting system, the airspace of described ducting system is enclosed and is formed by looped duct cell body and cover body, and described air channel cell body is set in outside synchronous rotation of described cylindrical shell; It is characterized in that, air channel cell body and described cylinder-shaped circularize space described in radial separation, to adapt to the heat amount of rising of described cylindrical shell; Adopt elastic connection way to set up being connected of described air channel cell body and described cylindrical shell.
10. the method for attachment of porous rotary kiln air channel cell body according to claim 9 and cylindrical shell, it is characterized in that, described elastic connection way is arranged and forms along the circumferential interval of described cylindrical shell by a plurality of described Flexible Connectors, and in described Flexible Connector and two junctions described air channel cell body and described cylindrical shell, one place for being fixedly connected with, another place is for hinged, the axis parallel setting of described hinged axial line and described cylindrical shell.
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| CN201410002910.3A CN103673588B (en) | 2014-01-03 | 2014-01-03 | The method of attachment of a kind of porous rotary kiln and air channel cell body and cylindrical shell |
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| CN201410002910.3A CN103673588B (en) | 2014-01-03 | 2014-01-03 | The method of attachment of a kind of porous rotary kiln and air channel cell body and cylindrical shell |
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| CN103673588B CN103673588B (en) | 2015-11-25 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB538853A (en) * | 1939-06-30 | 1941-08-19 | Henry Vanderwerp | Rotary kilns |
| DK267177A (en) * | 1976-06-17 | 1977-12-18 | Gvnii Tsementnoj Promy | FOOD APPARATUS FOR A MIXING OF STEAM GAS AND AIR UNDER A LAYER OF MATERIAL TREATED IN A ROTARY OVEN |
| SU642587A1 (en) * | 1970-01-15 | 1979-01-15 | Всесоюзный Научно-Исследовательский Институт Цементного Машиностроения | Device for distributing air of rotary fire bar cooler |
| JPS5441274A (en) * | 1977-09-08 | 1979-04-02 | Babcock Hitachi Kk | Chain-drive kiln |
| JPS54107471A (en) * | 1978-02-10 | 1979-08-23 | Kawasaki Heavy Ind Ltd | Rotary drum |
| CN201047715Y (en) * | 2007-06-19 | 2008-04-16 | 沈阳铝镁设计研究院 | Rotary kiln air supply device |
| CN102778124A (en) * | 2012-07-10 | 2012-11-14 | 沈阳博联特熔融还原科技有限公司 | Secondary radial air-supplying device for direct reduction equipment of rotary kiln |
-
2014
- 2014-01-03 CN CN201410002910.3A patent/CN103673588B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB538853A (en) * | 1939-06-30 | 1941-08-19 | Henry Vanderwerp | Rotary kilns |
| SU642587A1 (en) * | 1970-01-15 | 1979-01-15 | Всесоюзный Научно-Исследовательский Институт Цементного Машиностроения | Device for distributing air of rotary fire bar cooler |
| DK267177A (en) * | 1976-06-17 | 1977-12-18 | Gvnii Tsementnoj Promy | FOOD APPARATUS FOR A MIXING OF STEAM GAS AND AIR UNDER A LAYER OF MATERIAL TREATED IN A ROTARY OVEN |
| US4155704A (en) * | 1976-06-17 | 1979-05-22 | Gosudarstvenny Vsesojusny Nauchno-Issledovatelsky Institut Tsementnoi Promyshlennosti Niitsement | Apparatus for feeding a mixture of steam, gas and air into a rotary kiln under the layer of the material processed |
| JPS5441274A (en) * | 1977-09-08 | 1979-04-02 | Babcock Hitachi Kk | Chain-drive kiln |
| JPS54107471A (en) * | 1978-02-10 | 1979-08-23 | Kawasaki Heavy Ind Ltd | Rotary drum |
| CN201047715Y (en) * | 2007-06-19 | 2008-04-16 | 沈阳铝镁设计研究院 | Rotary kiln air supply device |
| CN102778124A (en) * | 2012-07-10 | 2012-11-14 | 沈阳博联特熔融还原科技有限公司 | Secondary radial air-supplying device for direct reduction equipment of rotary kiln |
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