CN104110947A - Rotating steam drier - Google Patents
Rotating steam drier Download PDFInfo
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- CN104110947A CN104110947A CN201310136146.4A CN201310136146A CN104110947A CN 104110947 A CN104110947 A CN 104110947A CN 201310136146 A CN201310136146 A CN 201310136146A CN 104110947 A CN104110947 A CN 104110947A
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- storage chamber
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Abstract
The invention discloses a rotating steam dryer which comprises a rotatable barrel body, a plurality of heating pipe units, a distributing guiding device and at least one condensate water collecting and storage chamber. The heating pipe units are arranged in the barrel body in the periphery direction with the rotating axis of the barrel body as a center and can rotate along with the barrel body. The distributing guiding device is arranged at one end of the barrel body and is used for providing steam for the heating pipe units and receiving condensate water. Each condensate water collecting and storage chamber is communicated with the distributing guiding device and at least one of the heating pipe units, each condensate water collecting and storage chamber and one heating pipe unit are correspondingly fixed at one end, provided with the distributing guiding device, of the barrel body, and each condensate water collecting storage chamber is arranged on the outer side of the corresponding heating pipe unit in the radial direction of the barrel body. By the the rotating steam dryer, the condensate water in the heating pipe units can be discharged timely, and accordingly the efficiency of the steam dryer can be improved.
Description
Technical field
The present invention relates to rotary dryer, particularly relate to a kind of employing steam as thermal source, by the revolution steam dryer of heating tube contact drying wet stock.
Background technology
In existing industrial production, the heat in high-temperature flue gas or thermal material is reclaimed, being translated into steam is the way extensively adopting.The generation of steam also sees the available low heat value wastes material of burning disposal.This part heat that is vapor form can be used for wet stock to be dried.Will be dry wet stock can be the mixture of inorganic or organic solid and water or other liquid, be applicable to the application of mining and metallurgy, chemical industry and field of Environment Protection.
Adopting turning circle cartridge type steam dryer to carry out contact drying to wet stock is one of effective means of utilizing heat in steam.Because steam and material mediate contact, and the high temperature drying gas producing without burning, so baking temperature is lower than adopting the mode of direct heat drier, atmosphere is more easily controlled.Steam contact drying is especially adapted to those materials to high temperature and atmosphere sensitivity, as non-ferrous metal concentrate, coal dust, oil-sand, sulfate, carbonate, p-phthalic acid and propylene etc.
So far, the revolution steam dryer of existing various ways.Their common feature is, first by pressure-regulating valve, regulates pressure, then enter vapor distribution device by the rotary connector being positioned on the axis of cylindrical shell end from the steam of pipe network, then imports in the heating pipe fitting of drier inside.In dry run, the part steam-condensation Cheng Shui in heating pipe fitting, and be exported heating tube, get back to rotary connector, then discharge or arrive condensation water recovery system by drain valve.
One can for example be US Patent No. 2,936,220.This patent has been announced a kind of steam dryer, is furnished with many groups straight heating tube parallel with cylindrical shell rotation direction in its cylindrical shell.Steam enters distributor via rotary connector through a conduit, then enters in these straight heating tubes.Water after steam-condensation flows out heating tube under Action of Gravity Field again and gets back to distributor due to being tilted in of cylindrical shell, and then cylindrical shell is got back to rotary connector by another conduit after turning over certain angle.In distributor, be provided with three space bars, inner skeleton is separated into three spaces, heating tube has been divided into three groups thus.
Another kind of swinging steam dryer sees Finnish patent FI962853, and it comprises the many groups heating tube along longitudinal setting of cylindrical shell.Every group comprises that the multilayer of arranging centered by the rotation of cylindrical shell is the annular heating tube of opening and two communicating pipe at the two ends of these heating tubes, heating tube being interconnected respectively.Steam, via central dispense supervisor and one of them communicating pipe, enters this heating tube from being one end of each circular heating tube of opening.Along with the rotation of cylindrical shell, steam release heat is also converted into condensed water.When heating tube turns over after certain angle with cylindrical shell, condensed water is got back to central dispense pipe from the other end of this heating tube via another communicating pipe.By cylindrical shell, tilted, the condensed water in central dispense pipe flows to rotary connector under Action of Gravity Field.
US Patent No. 6,415,527 disclose another swinging steam dryer, and it has four groups of heating pipe fitting groups of along the circumferential direction arranging centered by the rotation of cylindrical shell.Every group of heating tube comprises the Multi-layer warming pipe fitting of arranging along the radial direction of cylindrical shell.Every layer of heating pipe fitting comprises along two straight tubes of barrel body rotation axis arranged and is connected to a plurality of curved pipes between these two straight tubes.Steam can, through being arranged in the distributor of cylindrical shell one end and entering at least one of these two straight tubes by conduit, then enter in these curved pipes.Steam condensation in heating pipe fitting, condensed water is because being tilted under Action of Gravity Field and after heating tube forwards certain altitude to cylindrical shell of cylindrical shell flow back into distributor from one of these two straight tubes, then by siphon pipe sucking-off.
Although it is different that the pipeline of these steam dryers arranges, however the problem that they all exist the condensed water that can not discharge in time in heating tube to cause drying efficiency to reduce.Revolution steam dryer is when work, and material concentrates on the bottom of cylindrical shell mostly.The heating tube of bottom is because contacting with material, and in pipe, steam can convert condensed water in large quantities to.Yet the steam dryer of these prior aries, only rotates to height that the central axis of cylindrical shell is corresponding when above at heating tube, condensed water could be discharged from pipe.And concerning being positioned at the heating tube of cylindrical shell bottom, condensed water can retain in pipe in large quantities.The existence of in-tube condensation water, has become steam into the heat transfer of condensed water to material to the heat transfer of material.The thermal efficiency that reduces release heat by temperature due to condensed water is far smaller than the thermal efficiency that steam transfers condensed water release latent heat to, thereby the drying capacity of steam dryer also just reduces greatly.Therefore, discharge in time heating tube particularly the condensed water in the heating tube of cylindrical shell bottom seem most important.
Summary of the invention
One object of the present invention is to provide a kind of revolution steam dryer, and this drier can be discharged at least in part the condensed water of the heating tube that is arranged in cylindrical shell bottom when work.
For achieving the above object, the present invention proposes a kind of revolution steam dryer, comprise rotating cylindrical shell; A plurality of heating tubes unit is along the circumferential direction arranged in described cylindrical shell centered by the pivot center of described cylindrical shell, and can rotate with described cylindrical shell; Guide device, for steam being provided and receiving the condensed water in described heating tube unit to described a plurality of heating tubes unit, described guide device is arranged on one end of described cylindrical shell; At least one condensed water collection storage chamber, described in each, condensed water collection storage chamber is connected with at least one in described guide device and described a plurality of heating tubes unit, and described one end that is provided with described guide device of being fixed on accordingly described cylindrical shell in each condensed water collection storage chamber and described a plurality of heating tubes unit, and in the outside that is positioned in the radial direction this corresponding heating tube unit of described cylindrical shell.
Described condensed water collection storage chamber can be communicated with corresponding heating tube unit via at least one the first tube connector, and/or is communicated with the previous heating tube unit in the rotation direction of described cylindrical shell via at least one the second tube connector.And described condensed water collection storage chamber also can be communicated with described guide device via at least one the 3rd tube connector.
Preferably, described the first tube connector is connected to the front end of described condensed water collection storage chamber in the rotation direction of described cylindrical shell, described the second tube connector is connected to the front end of described condensed water collection storage chamber in the rotation direction of described cylindrical shell, and described the 3rd tube connector is connected to the rear end of described condensed water collection storage chamber in the rotation direction of described cylindrical shell.
Described the first tube connector and described the second tube connector also can be connected with described guide device respectively, thereby can provide the steam from described guide device to corresponding heating tube unit, and can when condensed water collection storage chamber rotates to certain angle position, to described guide device, derive the indoor condensed water of this collection storage.
Described revolution steam dryer also can comprise for the condensed water in described guide device being sucked into the siphon pipe of a draining system.Described siphon pipe is static, and described siphonal one end is stretched in described guide device and to downward-extension.At least one in described the first tube connector, described the second tube connector and described the 3rd tube connector is connected to described guide device and the pivot center from the inner surface of described guide device to described cylindrical shell extends, thereby makes between the inner surface and the pivot center of cylindrical shell of the opening of this tube connector in described guide device in guide device.Described at least one opening in described guide device in the first tube connector, the second tube connector and the 3rd tube connector is greater than the opening of described siphonal described one end to the distance of the inner surface of described guide device to the distance of the inner surface of described guide device.Like this, the condensed water that is arranged in guide device bottom can be siphoned away by siphon pipe and can not be back to first, second and/or the 3rd tube connector.
Described heating tube unit can comprise a plurality of longitudinal pipes that extend along the direction of the pivot center of described cylindrical shell, described the first tube connector is connected with the longitudinal pipe of at least a portion in corresponding heating tube unit, described the second tube connector with in corresponding heating tube unit at least the longitudinal pipe of another part be connected.
Preferably, the described a plurality of longitudinal pipes in described heating tube unit are lined up two rows along the radial direction of described cylindrical shell, to two identical described longitudinal pipes of pivot center distance of described cylindrical shell, by a plurality of transverse pipe, are interconnected.Last row's longitudinal pipe in the rotation direction of described cylindrical shell in described heating tube unit is communicated with described the first tube connector, and in described heating tube unit in the rotation direction of described cylindrical shell after one row longitudinal pipe be communicated with described the second tube connector.
Described revolution steam dryer also can comprise a plurality of steam chests, described a plurality of steam chest is arranged on one end that is provided with described guide device of described cylindrical shell, described in each, steam chest the heating tube unit corresponding with at least one is connected respectively, and in the inner side of described condensed water collection storage chamber corresponding to being positioned in the radial direction of described cylindrical shell.Described condensed water collection storage chamber is connected with corresponding heating tube unit connected steam chest via described at least one first tube connector, and is connected via the previous heating tube unit connected steam chest in the rotation direction of described at least one second tube connector and described cylindrical shell.Described in each, steam chest is also communicated with described guide device via at least one the 4th tube connector.
Described revolution steam dryer, also comprises that described siphon pipe is static for the condensed water in described guide device being sucked into the siphon pipe of a draining system, and described siphonal one end is stretched in described guide device and to downward-extension.At least one in described the 3rd tube connector and described the 4th tube connector is connected to described guide device and the pivot center from the inner surface of described guide device to described cylindrical shell extends, and the opening that is greater than described siphonal described one end to the distance of the inner surface of described guide device of described at least one opening in described guide device in described the 3rd tube connector and described the 4th tube connector arrives the distance of the inner surface of described guide device.Like this, the condensed water that is arranged in guide device bottom can be siphoned away by siphon pipe and can not be back to the 3rd and/or the 4th tube connector.
Preferably, described the first tube connector is connected to the radially outer part of the front end of described steam chest in the rotation direction of described cylindrical shell.
Described the second tube connector can be connected to the rear end in the rotation direction of described cylindrical shell of described steam chest.
Preferably, described the second tube connector is connected with described steam chest with the second branched pipe by the first branched pipe, wherein said the first branched pipe be connected to described steam chest rear end radially by inner part, and described the second branched pipe is connected to the radially outer part of the rear end of described steam chest.
Described heating tube unit can comprise a plurality of longitudinal pipes that extend along the direction of the pivot center of described cylindrical shell, and described steam chest is connected with the longitudinal pipe in corresponding heating tube unit.
Described heating tube unit also can comprise the one or more transverse pipe that are connected between described longitudinal pipe.
Described condensed water collection storage chamber can have around the pivot center bending of described cylindrical shell or the shape of bending.
Alternatively, described cylindrical shell has feed end and the discharge end being oppositely arranged, and described discharge end is lower than described feed end, and described condensed water collection storage chamber and described guide device are arranged on described discharge end.
Preferably, corresponding to each heating tube unit, be respectively arranged with a described condensed water collection storage chamber.
Preferably, the volume of described condensed water collection storage chamber is greater than the volume of the condensed water that can discharge corresponding described heating tube unit.
According to the present invention, for the heating tube unit directly contacting with material in cylindrical shell, the condensed water wherein producing can discharge in time and store in collection storage chamber.And condensed water in collection storage chamber rotates to above the pivot center of cylindrical shell in collection storage chamber after, can be from the rear end of collection storage chamber via the 3rd tube connector, be discharged to and minute lead chamber, and can not be back to come heating tube unit.Again because be roughly radially communicated to the always opening in described guide device higher than siphon pipe of first, second, third in guide device and/or the 4th tube connector opening, the condensed water of guide device bottom only can be siphoned away by siphon pipe and can not be back to the first, second, third and the 4th tube connector.
By this set, even the heating tube in cylindrical shell extreme lower position, the condensed water wherein producing also can be discharged in time in heating tube, the problem of having avoided heat transfer efficiency that condensed water stockpiling in heating tube cause and drying efficiency to decline.By the present invention, when this drier work, the even whole condensed water of the major part in heating tube can be discharged in time.Therefore,, than prior art, the present invention can improve heat transfer efficiency, minimizing equipment size and area of mill site, attenuating mechanical load and the driving power of steam dryer and the attrition that reduces heating pipe fitting effectively.
Accompanying drawing explanation
Below in conjunction with example but not determinate accompanying drawing and in detail embodiment the present invention is described in detail, these figure are schematically and must are not pro rata, wherein:
Fig. 1 is for turning round according to an embodiment of the invention the structural representation of steam dryer;
Fig. 2 is the phantom along II-II direction in Fig. 1;
Fig. 3 is the partial perspective view along III-III direction in Fig. 1, shows being connected of heating tube and tube connector;
Fig. 4 is the partial schematic sectional view along IV-IV direction in Fig. 1;
Fig. 5 is the partial schematic diagram of Fig. 4;
Fig. 6 is the broken section enlarged drawing of Fig. 4, shows the siphon pipe in guide device;
Fig. 7 is for turning round according to another embodiment of the present invention the structural representation of steam dryer;
Fig. 8 is the schematic diagram along VIII-VIII direction in Fig. 7;
Fig. 9 is the partial schematic sectional view along IX-IX direction in Fig. 7;
Figure 10 is that Fig. 9 rotates the partial schematic diagram after an angle;
Figure 11 is the broken section enlarged drawing of Fig. 9, shows the siphon pipe in guide device.
The specific embodiment
Below, by exemplary embodiment, the present invention is specifically described.Yet should be appreciated that element, structure and the feature in an embodiment also can be attached in other embodiment valuably in the situation that further not narrating.
As shown in Fig. 1-6, swinging steam dryer 1 has rotating cylindrical shell 10 according to an embodiment of the invention.Cylindrical shell 10 is normally columnar in fact.Preferably, cylindrical shell 10 is outer is arranged with two rolling rings 11, and each rolling ring 11 is placed on the support roller 12 of two group.Cylindrical shell 10 is outer to be also provided with for driving the drive system 13 of its rotation.Drive system 13 can be such as being comprised of motor, reductor etc.Conventionally, one end of cylindrical shell 10 (for example left end in Fig. 1) is feed end, and its other end (for example right-hand member in Fig. 1) is discharge end.For material is flowed smoothly in drier, discharge end can be set a little less than feed end, that is, and make cylindrical shell 10 from feed end to discharge end with small angle inclination.
In an example, the feed end of cylindrical shell 10 is provided with end plate 14, offers center drilling 15(Fig. 2 on end plate 14), thus material to be dried and take humid gas and can enter in drier via perforate 15.The discharge end of cylindrical shell 10 can be provided with discharging cover 19, the below of discharging cover 19 is provided with to discharge the opening 20 of dried material, and top is provided with to derive the material steam producing in dry run and opening 21(Fig. 1 and Fig. 4 of taking the gaseous mixture of humid gas).Here, discharging cover 19 is fixed, and and rotating cylindrical shell 10 between be provided with sealing device 22.
In cylindrical shell 10, be provided with a plurality of heating tubes unit 16.These heating tube unit 16, centered by the pivot center R of cylindrical shell 10, are along the circumferential direction arranged in cylindrical shell.Each heating tube unit 16 extends along the pivot center direction of cylindrical shell 10, and can for example by support 17, be arranged on inner barrel, thereby can rotate with cylindrical shell.In one end of cylindrical shell 10, preferably at discharge end, be provided with guide device 25, for steam being provided to heating tube unit 16 and receiving 16 condensed waters that reflux from heating tube unit.Guide device 25 can be rotated with cylindrical shell 10.
At least one condensed water collection storage chamber 30 is fixed to the end of cylindrical shell 10, and is connected respectively with guide device 25 and at least one heating tube unit 30.Preferably, condensed water collection storage chamber 30 and guide device 25 are arranged on same one end of cylindrical shell 10.Each condensed water collection storage chamber 30 is positioned as corresponding with a heating tube unit 16, and in the outside that is positioned in the radial direction this corresponding heating tube unit 16 of cylindrical shell 10.Preferably, corresponding to each heating tube unit 16, be respectively arranged with a condensed water collection storage chamber 30.Each condensed water collection storage chamber 30 is communicated with corresponding heating tube unit 16 via one or more the first tube connectors 28, and is communicated with heating tube unit 16 previous on the rotation direction T of cylindrical shell via one or more the second tube connectors 26.Each condensed water collection storage chamber 30 is also communicated with described guide device 25 via one or more the 3rd tube connectors 31.
Below in conjunction with Fig. 5, illustrate.In the example shown in Fig. 5, the cross section of cylindrical shell 10 is divided into five sector regions, and the rotation direction T of suitable cylindrical shell is followed successively by sector region E, D, C, B and A, is respectively arranged with a heating tube unit in each sector region.Corresponding to each heating tube unit, be also respectively arranged with a condensed water collection storage chamber.Here, the storage of condensed water collection chamber 30A, 30B, 30C, 30D and 30E are around the periphery setting of cylindrical shell 10.Wherein, in the drawings below be sector region B, with respect to sector region B, along the previous of barrel body rotation direction T, be sector region A, then one is sector region C.
With condensed water, integrate storage chamber 30B as example, it is connected with the corresponding heating tube unit 16B in sector region B by one first tube connector 28B, and is connected with the heating tube unit 16A in last sector region A by one second tube connector 26A.The connected mode of other condensed water collection storage chambers and heating unit is similar with collection storage chamber 30B.Like this, on the one hand, condensed water collection storage chamber 30B can either receive the condensed water in the heating tube unit 16B of corresponding sector region B, can also receive the condensed water in the heating tube unit 16A in last sector region A.On the other hand, for example, for heating tube unit (16B), condensed water wherein can either be discharged to the condensed water collection storage chamber 30B corresponding with the sector region B at own place via the first tube connector 28B, also can be discharged to the condensed water collection storage chamber 30C corresponding with a rear sector region C via the second tube connector 26B.
Yet should be appreciated that according to the present invention, can also there be other connected mode condensed water collection storage chamber and heating tube unit.For example, condensed water collection storage chamber can only be connected with corresponding heating tube unit by the first tube connector, or can only by the second tube connector, be connected with heating tube unit previous in barrel body rotation direction.In addition,, according to quantity and the set-up mode of heating tube unit and condensed water collection storage chamber, a collection storage chamber can also be connected with more heating tubes unit by more tube connectors.For the situation that is provided with a plurality of condensed water collection storages chamber, each collection storage chamber can be different from the connected mode of heating tube unit.
In the example shown in Fig. 5, each the first tube connector 28 and each second tube connector 26 are also communicated with guide device 25 respectively.When drier is worked, as the steam of thermal source, by the import 24 of rotary connector 23, introduce, and enter guide device 25.The steam of guide device 25 enters in corresponding heating tube unit via each first tube connector 28 and the second tube connector 26 again.In the heating tube unit of cylindrical shell bottom 16A, 16B and 16C, owing to directly contacting and dry wet material, thereby the steam in heating tube can change into condensed water in a large number.For heating tube unit 16B and 16C, chamber 30B and 30C are stored up higher than its each self-corresponding condensed water collection in its position, so condensed water wherein can flow in each self-corresponding condensed water collection storage chamber 30B and 30C via the first tube connector 28B and 28C separately.And for heating tube unit 16A, although its with corresponding condensed water collection storage chamber 30A in large to identical height, yet along the height of the rear condensed water collection storage chamber 30B of barrel body rotation direction T, be significantly less than heating tube unit 16A.Therefore, the condensed water in heating tube unit 16A can flow in condensed water collection storage chamber 30B via the second tube connector 26A.Like this, heating tube unit 16A, the 16B and the 16C condensed water that are arranged in the rotation below (being positioned at cylindrical shell bottom) of cylindrical shell all can be discharged heating tube in time, make heating tube can keep in the mode of steam-condensation, material being conducted heat, thereby drying efficiency is improved greatly.
And for the heating tube unit 16D in cylindrical shell top, on the one hand, it is because the steam not contacting in wet stock thereby pipe is less condensed into water.The condensed water that may exist on the other hand, can for example flow directly in guide device 25 via the first tube connector 28D.
Similarly, for the heating tube unit 16E in cylindrical shell top, on the one hand, it is because the steam not contacting in wet stock thereby pipe is less condensed into water.The condensed water that may exist on the other hand, can for example flow directly in guide device 25 via the second tube connector 26E.
Each condensed water collection storage chamber 30A-30E also the 3rd tube connector 31A, 31B, 31C, 31D and the 31E by is separately connected to guide device 25.Preferably, the first tube connector and the second tube connector are connected to the front end of condensed water collection storage chamber on barrel body rotation direction T, and the 3rd tube connector is connected to the rear end of condensed water collection storage chamber on barrel body rotation direction T.When condensed water collection storage chamber promotes from extreme lower position with the rotation of cylindrical shell 10, condensed water wherein accumulates in the rear end of collection storage chamber mostly.After the plane of condensed water collection storage chamber rotation condensed water plane extremely wherein higher than pivot center R place, for example condensed water collection stores up the situation of chamber 30E, the condensed water accumulating can flow in guide device 25 in time via the 3rd tube connector 31E, and can not flow back to heating tube unit 16.Along with condensed water collection storage chamber is further rotated with cylindrical shell, for example condensed water collection stores up the situation of chamber 30D, even if wherein still accumulate condensed water, this condensed water still can be back in guide device 25 via the first tube connector 28D.Condensed water in guide device 25 can be discharged to rotary connector 23 via the siphon pipe 32 being arranged in guide device 25, and discharges via the outlet 33 of rotary connector 23, such as being discharged to draining system or condensation water recovery system etc.
Siphon pipe 32 is static, is arranged at the draining end face of rotary connector 23, and is connected with inner condensate draining pipe 33.As shown in Figure 6, one end 32a of siphon pipe 32 can stretch in guide device 25 and to downward-extension.At least one in the first tube connector 28, the second tube connector 26 and the 3rd tube connector 31 (each in the first tube connector 28, the second tube connector 26 and the 3rd tube connector 31 preferably, as shown in Figure 6) can be further after being connected to guide device 25 pivot center R from from the inner surface 25a of guide device 25 to cylindrical shell extend, for example radially extend to the opening of this tube connector between guide device inner surface 25a and barrel body rotation axis R.Preferably, the opening of tube connector in guide device 25 is greater than the end 25a of siphon pipe 32 distance of extended distance guide device inner surface 25a to the distance of guide device inner surface 25a is set.Like this, the condensed water that accumulates in guide device 25 interior bottoms is always siphoned away by siphon pipe 32 and can not return to tube connector.
In an example, condensed water collection storage chamber 30 can for example be fixed on the end plate 18 of the cylindrical shell port of export, as shown in Figure 1 by securing member 34; Or, also can be fixed on side surface or other applicable positions of cylindrical shell 10.Preferably, condensed water collection storage chamber 30 is configured to the shape around the pivot center R of cylindrical shell bending or bending, for example arcuate shape (Fig. 4), broken line shape or the combination of the two or other applicable shapes.The condensed water collection storage chamber 30 of bending or bending shape takies less space when rotating with cylindrical shell 10, and can increase as little as possible the load of drive system 13.Yet should be appreciated that according to the present invention, the condensed water collection storage chamber 30 of other shapes (for example rectilinear form) is also fine.Preferably, the volume that each condensed water collection storage chamber 30 is set is greater than the volume of 16 condensed waters that can discharge in corresponding heating tube unit, so that the condensed water in pipe can all be discharged to condensed water collection storage chamber 30 in time.
According to one embodiment of present invention, heating tube unit 16 comprises a plurality of longitudinal pipes 161 that extend along the direction of the pivot center of cylindrical shell 10 and preferably also comprises a plurality of transverse pipe 162 that are connected between longitudinal pipe 161.As shown in Figure 2, longitudinal pipe 161 can be to line up two rows along the radial direction of cylindrical shell, equidistant two longitudinal pipes 161 of pivot center R to cylindrical shell are interconnected by a plurality of transverse pipe 162, thereby make in the cross-sectional direction perpendicular to barrel body rotation axis, 16 one-tenth of heating tube unit are trapezoidal shape roughly.Transverse pipe 162 can be for example rectilinear form or arcuate shape or the combination of the two.For each heating tube unit, the longitudinal pipe 161(of last row on barrel body rotation direction T for example roughly becomes the longitudinal pipe of vertically arranging in Fig. 2) be set to be communicated with the first tube connector 28, and the rear one longitudinal pipe 161(arranging on barrel body rotation direction T for example becomes the roughly longitudinal pipe of oblique arrangement in Fig. 2) be set to be communicated with the second tube connector 26.The condensed water that this set is conducive in heating tube unit 16 can be discharged in time collection storage chamber 30 in barrel body rotation process.
Yet according to the present invention, other arrangement mode of heating tube and other connected mode of heating tube and tube connector are also fine.For example, longitudinal pipe 161 can be arranged in other form, as long as the longitudinal pipe of at least a portion in heating tube unit is connected with the first tube connector 28, and at least the longitudinal pipe of another part is connected with the second tube connector 26.If needed, a longitudinal pipe can not only be connected with the first tube connector 28 but also be connected with the second tube connector 26.Alternatively, can also only longitudinal pipe be set and transverse pipe is not set.Or heating tube unit can consist of a crooked pipe arranging, the two ends of this pipe are connected with the second tube connector 26 with the first tube connector 28 respectively.As shown in Figure 3, the heating tube in heating tube unit 16 (for example longitudinal pipe 161) can be connected to tube connector 26 and 28 by conduit 27, and conduit 27 can be (as metal hose) rigidity or flexible.
Fig. 7-11 show revolution steam dryer 1' according to another embodiment of the invention.For simplicity, the parts identical with aforementioned drier 1 of drier 1' adopt identical Reference numeral, and be configured in here identical with drier 1 in drier 1' is no longer repeated in this description.
Drier 1' has a plurality of steam chests 37, is arranged on one end that is provided with guide device 25 and condensed water collection storage chamber 40 of cylindrical shell 10.Each steam chest 37 is connected with a heating tube unit 35 respectively.Yet according to other embodiments of the invention, a steam chest 37 also can be connected with a plurality of heating tubes unit 35.Each heating tube in heating tube unit 35 can be connected to steam chest 37 by conduit 27, and conduit 27 can be (as metal hose) rigidity or flexible.Steam chest 37 is in the inner side of condensed water collection storage chamber 40 corresponding to being positioned in the radial direction of cylindrical shell.Each condensed water collection storage chamber 40 is connected with the steam chest 37 that is positioned at identical sector region via one or more the first tube connectors 38, and be connected with the steam chest 37 in previous sector region on barrel body rotation direction T via one or more the second tube connectors 39, thereby be communicated to corresponding heating tube unit 35 via steam chest 37.Each condensed water collection storage chamber 40 is also communicated with guide device 25 via one or more the 3rd tube connectors 41.Each steam chest 37 can be communicated with guide device 25 via one or more the 4th tube connectors 42.Condensed water collection storage chamber 40 can be for example combination or other the applicable shape around broken line shape (Figure 10), arc shape or camber line and the broken line shape of the pivot center R of cylindrical shell bending.
Here, heating tube unit 35 comprises a plurality of longitudinal pipes 351 that extend along the direction of the pivot center of cylindrical shell 10, and each steam chest 37 is connected with the longitudinal pipe 351 in corresponding heating tube unit 35 respectively.Yet should be appreciated that according to the present invention, the heating tube unit of other structures is also fine, for example, with the similar structure in previously described heating tube unit 16.Between longitudinal pipe 351, also can be connected by one or more transverse pipe.
In the example shown in Figure 10, the cross section of cylindrical shell 10 is divided into four sector regions, rotation direction T along cylindrical shell is followed successively by sector region a, b, c and d, corresponding to each sector region, is respectively arranged with a heating tube unit, a steam chest and a condensed water collection storage chamber.Here, condensed water collection storage chamber is around the periphery setting of cylindrical shell 10.Wherein, in the drawings below be sector region a, with respect to sector region a, at the previous of barrel body rotation direction T, be sector region b, then one be sector region d.
With condensed water, integrate storage chamber 40a as example, it is connected with steam chest 37a and heating tube unit 35a in corresponding sector region a by one first tube connector 38a, and is connected with steam chest 37b and heating tube unit 35b in last sector region b by one second tube connector 39b.The connected mode of other condensed water collection storage chambers and steam chest is similar with collection storage chamber 40a.Like this, on the one hand, condensed water collection storage chamber 40a can either receive the condensed water in the heating tube unit 35a in corresponding sector region a by the first tube connector 38a and steam chest 37a, can also receive the condensed water in the heating tube unit 35b in last sector region b by the second tube connector 39b and steam chest 37b.On the other hand, the condensed water that heating tube unit 35a is discharged in steam chest 37a can either be discharged in the condensed water collection storage chamber 40a corresponding with the sector region a at own place via the first tube connector 38a, also can be discharged in the condensed water collection storage chamber 40d corresponding with a rear sector region d via the second tube connector 39a.
Yet should be appreciated that according to the present invention, can also there be other connected mode condensed water collection storage chamber and heating tube unit.For example, condensed water collection storage chamber can only be connected with corresponding heating tube unit by the first tube connector, or only by the second tube connector, is connected with heating tube unit previous in barrel body rotation direction.In addition,, according to quantity and the set-up mode of heating tube unit and condensed water collection storage chamber, a collection storage chamber can also be connected with more heating tubes unit by more tube connectors.For the situation that is provided with a plurality of condensed water collection storages chamber, each collection storage chamber can be different from the connected mode of heating tube unit.
Specifically, when drier 1' works, steam enters guide device 25, yet via each the 4th tube connector 42, enters corresponding steam chest 37 again, then sends in corresponding heating tube unit 35.Heating tube in cylindrical shell bottom (as at least a portion heating tube in heating tube unit 35a and heating tube unit 35b), due to them contact dry wet material, thereby the steam in heating tube can change into condensed water in a large number, and under the effect of gravity, flow in corresponding separately steam chest 37a and 37b.
For steam chest 37a, because its position is higher than corresponding condensed water collection storage chamber 40a, so condensed water wherein can flow in condensed water collection storage chamber 40a via the first tube connector 38a.For steam chest 37b, although it stores up chamber 40b in large extremely identical height with corresponding condensed water collection, yet the height of the condensed water collection corresponding with rear sector region a storage chamber 40a is significantly less than steam chest 37b.Therefore, the condensed water in steam chest 37b can flow in condensed water collection storage chamber 40a via the second tube connector 39b.Like this, the heating tube unit 35a and the 35b condensed water that are arranged in the rotation below (being positioned at cylindrical shell bottom) of cylindrical shell can be discharged in time, make heating tube can keep in the mode of steam-condensation, material being conducted heat, thereby drying efficiency is improved greatly.
In order to be conducive to condensed water, from steam chest, be discharged to condensed water collection storage chamber, the first tube connector (for example 38a) is preferably connected to the radially outer part along cylindrical shell (being the part on the lower of right-hand member of steam chest 37a in Figure 10) of the front end of corresponding steam chest 37a on barrel body rotation direction T, and to be preferably connected to the front end of condensed water collection storage chamber 40a on barrel body rotation direction T (be the right-hand member in Figure 10.For example, and the second tube connector (39b) is preferably connected to the rear end of steam chest 37b on barrel body rotation direction T, and be preferably connected to the front end (be right-hand member in Figure 10) of condensed water collection storage chamber 40a on barrel body rotation direction T.
Further preferably, the second tube connector 39 can be connected with steam chest 37 with the second branched pipe 391 by the first branched pipe 391, wherein the first branched pipe 391 be connected to steam chest 37 rear end along cylindrical shell radially by inner part (being the part at the close cylindrical shell center of rear end), and the second branched pipe 392 be connected to steam chest 37 rear end along the radially outer part of cylindrical shell (being the part away from cylindrical shell center of rear end).For example, for the steam chest (37b) that just turns over extreme lower position, condensed water accumulates in the outer part of the rear end of steam chest 37b mostly.Therefore, the condensed water in steam chest 37b can be discharged in time by the second branched pipe 392.And when steam chest is with barrel body rotation during to a higher position, the situation of steam chest 37c for example, condensed water mainly accumulates in the inner side part of the rear end of steam chest 37c.At this moment, the condensed water in steam chest 37c can be discharged in time by the first branched pipe 391.
The 3rd tube connector once condensed water collection storage chamber turns to higher than barrel body rotation axis R, and for example condensed water collection stores up the situation of chamber 40c, and condensed water wherein can be discharged to guide device 25 via the 3rd tube connector 41c, and can not be back in heating tube unit.In order to be conducive to the discharge of condensed water, the 3rd tube connector (for example 41c) is preferably connected to the rear end (be right-hand member in Figure 10) of condensed water collection storage chamber 40c on barrel body rotation direction T.
When condensed water collection storage chamber turns to its first tube connector lower than this condensed water collection storage chamber, for example condensed water collection stores up the situation of chamber 40c, if wherein there is the condensed water not yet draining, this condensed water also can be discharged to corresponding steam chest 37c via the first tube connector 38c, from 37c, by the 4th tube connector 42c, be discharged to guide device 25 again, thereby condensed water can not be back to heating tube unit.The 4th tube connector 42c is preferably connected to the inner side of corresponding steam chest 37c, can be front end (as shown in figure 10) or the rear end (not shown) of in rotational direction T or the front-end and back-end that are simultaneously connected to steam chest.
As shown in figure 11, one end 32a of siphon pipe 32 can stretch in guide device 25 and to downward-extension.At least one in the 3rd tube connector 37 and the 4th tube connector 42 (each in the 3rd tube connector 37 and the 4th tube connector 42 preferably, as shown in figure 11) can be further after being connected to guide device 25 pivot center R from from the inner surface 25a of guide device 25 to cylindrical shell extend, for example radially extend to the opening of this tube connector between guide device inner surface 25a and barrel body rotation axis R.Preferably, the opening of tube connector in guide device 25 is greater than the end 25a of siphon pipe 32 distance of extended distance guide device inner surface 25a to the distance of guide device inner surface 25a is set.Like this, the condensed water that accumulates in guide device 25 interior bottoms is always siphoned away by siphon pipe 32 and can not turn back to tube connector.
Although it should be pointed out that invention has been described by above-mentioned embodiment, yet the present invention also can have other numerous embodiments.Without departing from the spirit and scope of the present invention; those of ordinary skill in the art obviously can make various corresponding changes and distortion to the present invention, but these changes and distortion all should belong in the scope that claims of the present invention and equivalent thereof protect.
Claims (18)
1. a revolution steam dryer, comprises rotating cylindrical shell, it is characterized in that, described revolution steam dryer also comprises:
A plurality of heating tubes unit is along the circumferential direction arranged in described cylindrical shell centered by the pivot center of described cylindrical shell, and can rotate with described cylindrical shell;
Guide device, for steam being provided and receiving the condensed water in described heating tube unit to described a plurality of heating tubes unit, described guide device is arranged on one end of described cylindrical shell;
At least one condensed water collection storage chamber, described in each, condensed water collection storage chamber is connected with at least one in described guide device and described a plurality of heating tubes unit, and described one end that is provided with described guide device of being fixed on accordingly described cylindrical shell described in each in condensed water collection storage chamber and described a plurality of heating tubes unit, and in the outside that is positioned in the radial direction this corresponding heating tube unit of described cylindrical shell.
2. revolution steam dryer according to claim 1, wherein said condensed water collection storage chamber is via at least one first tube connector and corresponding heating tube unit connection, and/or is communicated with via the previous heating tube unit in the rotation direction of at least one second tube connector and described cylindrical shell; And
Described condensed water collection storage chamber is also communicated with described guide device via at least one the 3rd tube connector.
3. revolution steam dryer according to claim 2, wherein said the first tube connector is connected to the front end of described condensed water collection storage chamber in the rotation direction of described cylindrical shell, described the second tube connector is connected to the front end of described condensed water collection storage chamber in the rotation direction of described cylindrical shell, and described the 3rd tube connector is connected to the rear end of described condensed water collection storage chamber in the rotation direction of described cylindrical shell.
4. revolution steam dryer according to claim 2, wherein said condensed water collection storage chamber is communicated with corresponding heating tube unit via described the first tube connector, and be communicated with via the previous heating tube unit in the rotation direction of described the second tube connector and described cylindrical shell, and described the first tube connector and described the second tube connector are connected with described guide device respectively.
5. revolution steam dryer according to claim 4, wherein said heating tube unit comprises a plurality of longitudinal pipes that extend along the direction of the pivot center of described cylindrical shell, described the first tube connector is connected with the longitudinal pipe of at least a portion in corresponding heating tube unit, described the second tube connector with in corresponding heating tube unit at least the longitudinal pipe of another part be connected.
6. revolution steam dryer according to claim 5, described a plurality of longitudinal pipes in wherein said heating tube unit are lined up two rows along the radial direction of described cylindrical shell, two identical described longitudinal pipes of pivot center distance to described cylindrical shell are interconnected by a plurality of transverse pipe
Last row's longitudinal pipe in the rotation direction of described cylindrical shell in described heating tube unit is communicated with described the first tube connector, and in described heating tube unit in the rotation direction of described cylindrical shell after one row longitudinal pipe be communicated with described the second tube connector.
7. revolution steam dryer according to claim 4, wherein also comprise for the condensed water in described guide device being sucked into the siphon pipe of a draining system, described siphon pipe is static, and described siphonal one end is stretched in described guide device and to downward-extension
At least one in described the first tube connector, described the second tube connector and described the 3rd tube connector is connected to described guide device and the pivot center from the inner surface of described guide device to described cylindrical shell extends, and the opening that described at least one opening in described guide device in described the first tube connector, described the second tube connector and described the 3rd tube connector is greater than described siphonal described one end to the distance of the inner surface of described guide device arrives the distance of the inner surface of described guide device.
8. revolution steam dryer according to claim 2, wherein also comprise a plurality of steam chests, be arranged on one end that is provided with described guide device of described cylindrical shell, described in each, steam chest the heating tube unit corresponding with at least one is connected respectively, and in the inner side of described condensed water collection storage chamber corresponding to being positioned in the radial direction of described cylindrical shell
Described condensed water collection storage chamber is connected with corresponding heating tube unit connected steam chest via described at least one first tube connector, and be connected via the previous heating tube unit connected steam chest in the rotation direction of described at least one second tube connector and described cylindrical shell
Described in each, steam chest is also communicated with described guide device via at least one the 4th tube connector.
9. revolution steam dryer according to claim 8, wherein said the first tube connector is connected to the radially outer part of the front end of described steam chest in the rotation direction of described cylindrical shell.
10. revolution steam dryer according to claim 8, wherein said the second tube connector is connected to the rear end of described steam chest in the rotation direction of described cylindrical shell.
11. revolution steam dryers according to claim 10, wherein said the second tube connector is connected with described steam chest with one second branched pipe by one first branched pipe, wherein said the first branched pipe be connected to described steam chest rear end radially by inner part, and described the second branched pipe is connected to the radially outer part of the rear end of described steam chest.
12. revolution steam dryers according to claim 8, wherein said heating tube unit comprises a plurality of longitudinal pipes that extend along the direction of the pivot center of described cylindrical shell, described steam chest is connected with the longitudinal pipe in corresponding heating tube unit.
13. according to the revolution steam dryer described in claim 5 or 12, and wherein said heating tube unit also comprises the one or more transverse pipe that are connected between described longitudinal pipe.
14. revolution steam dryers according to claim 8, wherein also comprise for the condensed water in described guide device being sucked into the siphon pipe of a draining system, described siphon pipe is static, and described siphonal one end is stretched in described guide device and to downward-extension
At least one in described the 3rd tube connector and described the 4th tube connector is connected to described guide device and the pivot center from the inner surface of described guide device to described cylindrical shell extends, and the opening that is greater than described siphonal described one end to the distance of the inner surface of described guide device of described at least one opening in described guide device in described the 3rd tube connector and described the 4th tube connector arrives the distance of the inner surface of described guide device.
15. revolution steam dryers according to claim 1, wherein said condensed water collection storage chamber has around the pivot center bending of described cylindrical shell or the shape of bending.
16. revolution steam dryers according to claim 1, wherein, described cylindrical shell has feed end and the discharge end being oppositely arranged, and described discharge end is lower than described feed end, and described condensed water collection storage chamber and described guide device are arranged on described discharge end.
17. revolution steam dryers according to claim 1, wherein, are respectively arranged with a described condensed water collection storage chamber corresponding to each heating tube unit.
18. revolution steam dryers according to claim 1, wherein, the volume of described condensed water collection storage chamber is greater than the volume of the condensed water that can discharge corresponding described heating tube unit.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP4311992A1 (en) * | 2022-07-26 | 2024-01-31 | Proman AG | Rotary type dryer for drying wet melamine |
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