CN108929016A

CN108929016A - A kind of circulation drier

Info

Publication number: CN108929016A
Application number: CN201810644933.2A
Authority: CN
Inventors: 王良源
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-01-06
Filing date: 2016-01-06
Publication date: 2018-12-04
Also published as: CN105621847B; CN108751660A; CN105621847A

Abstract

The present invention discloses a kind of circulation drier, including furnace body, for to the charging gear that material is added in furnace body, for collecting the material-receiving device of the material in furnace body after drying, it is by the first air inlet that extraneous hot gas introducing furnace is intracorporal to wind apparatus, and the agitating device for being stirred and crushing to material.Wherein, agitating device includes shaft, is threaded through in the cavity of the furnace body, and the shaft has venting cavity, is provided with several puff prots on venting cavity, the jet direction of the puff prot is not overlapped not parallel with the mixing direction of the mixing direction of agitating shaft and blade；Hot gas introduces in furnace body cavity through the first air inlet, shaft rotation drives the mixing component in shaft constantly to be stirred along the radial and axial of shaft to material, enable material in furnace body along the axially and radially rolling of shaft, increase the time that material is stirred, increases the area of material and hot gas heat convection.

Description

A kind of circulation drier

Technical field

The present invention relates to heat drying technical fields, and in particular to a kind of drying system.

The present invention is divisional application, female case application No. is: 201610009892.0, denomination of invention are as follows: a kind of circulation is dry Dry device, applicant are as follows: Wang Liangyuan, the applying date are as follows: on January 6th, 2016.

Background technique

Sludge is the product in sewage disposal process, containing a large amount of organic matter, heavy metal and mould etc., if being not added subsequent Processing environment can be caused seriously to pollute, therefore, often sludge is carried out concentration and dehydration, but by this processing after Moisture percentage in sewage sludge usually 70% or more, also need further to be dried sludge.

The drying system used in the prior art to drying sludge, structure is mostly such as Chinese patent literature Drying system disclosed in CN201058838Y, including furnace body, the batcher being connect with the feed inlet of furnace body, the outlet with furnace body The spray column of mouth connection.Wherein, furnace body includes setting in the intracorporal transmission shaft of furnace, is arranged on transmission shaft outer wall and radially extends Several hollow blades, hollow blade and furnace body outer wall are heated by being passed through high-temperature gas into transmission shaft, so that in furnace body Form hot environment.For this drying system during to dry materials, material is in inboard wall of furnace body, transmission shaft and blade outer wall In the cavity of formation, under the rotation of transmission shaft, blade stirs material along the direction that transmission shaft rotates, so that material is in the cavity It is stirred, and carries out heat convection between blade outer wall, transmission shaft outer wall and inboard wall of furnace body.

But above-mentioned drying system, material are transmitted the unidirectional blade stirring of axis always, carry out along same direction Rolling, on the one hand can reduce the heat-transfer effect in later period, and it is long that material is stirred interval time, cannot fully stir material It mixes；On the other hand, for material biggish for some humidity, it will cause along same direction rolling and bonded between material, shadow The shatter value for ringing material, is unfavorable for heat convection, causes heat exchange efficiency low, drying effect is bad.

Summary of the invention

Therefore, technical problem to be solved by the present invention lies in overcome in the prior art drying system drying efficiency it is low, dry The bad defect of dry effect, to provide a kind of drying device that can be improved drying efficiency and improve drying effect.

For this purpose, the present invention provides a kind of circulation drier, including

Furnace body, horizontally disposed, feed inlet, the discharge port for being added, taking out with cavity, for material；And heat supply Gas inflow, the first air inlet of outflow, the first gas outlet；

Charging gear, for material is added in the furnace body；

Material-receiving device, for collecting the material in the furnace body after drying；

Agitating device, including

Shaft is threaded through in the cavity of the furnace body, and the shaft has venting cavity, is provided on the venting cavity several A puff prot, the jet direction of the puff prot are not weighed with the mixing direction of the agitating shaft and the mixing direction of the blade Close not parallel, the central axes formation 30-50 degree angle of the jet direction of the puff prot and the feed inlet, first air inlet Mouthful airintake direction with the jet direction of the puff prot is not parallel is not overlapped；

Connecting tube, the venting cavity are connect by connecting tube with first gas outlet, first gas outlet with it is described Puff prot does not open simultaneously；

Agitating shaft is arranged on the outer wall of the shaft, and the radial direction towards the shaft extends, and along described turn The axial outer wall distribution of axis is multiple；

Blade is inclined on the agitating shaft to be multiple, and the distance between adjacent described blade is not more than 30mm.

The blade is removably set on the agitating shaft, and the mixing component further includes locking member, and being used for will be described Blade is locked at the required position on the agitating shaft.

Multiple agitating shafts are distributed on multiple spaced peripheries of the shaft, each periphery of the shaft On at least one agitating shaft is distributed with.

Agitating shaft on adjacent circumferential face is located on different vertical planes.

The agitating shaft is at least four, and four agitating shafts are separately positioned on four peripheries of the shaft, And four agitating shafts are successively set on the front in the top exterior walls in the Z-direction of the shaft, in Y direction respectively In bottom outer wall on rear portion outer wall on outer wall, in Y direction and in Z-direction.

Angle of the blade tilted set on the agitating shaft is greater than 0 ° and is less than or equal to 20 °；The blade Spacing between the edge and the inboard wall of furnace body of inboard wall of furnace body side is 0.5-10 centimetres.

It is described to wind apparatus be hot-blast stove, the gas outlet of the hot-blast stove is connected to first air inlet by second pipe Mouthful.

It further include air distribution device, the gas outlet of the air distribution device is connected to the second pipe, is used for outside air It introduces in the second pipe, is mixed with the hot gas in the second pipe.

It further include dust-extraction unit, the dust-extraction unit includes cyclone cylinder, and there is the cyclone cylinder the second air inlet, second to go out Port and third gas outlet；

Second air inlet is connected to first gas outlet, for the intracorporal gas of furnace to be introduced the cyclone cylinder It is interior, and to the dedusting of introducing；

Second gas outlet is in communication with the outside, for the gas after dedusting to be discharged；

The third gas outlet is connected to by first pipe with the cavity to wind apparatus, for by the gas after dedusting It is mixed with to the hot gas in wind apparatus, the hot gas of moisture content needed for being formed.

Technical solution provided by the invention, has the advantages that

1. circulation drier provided by the invention, including furnace body, there is feed inlet, discharge port, the first air inlet on furnace body Mouth and the first gas outlet；For the charging gear to addition material in furnace body, for collecting the material in furnace body after drying Material-receiving device, agitating device, including shaft are threaded through in the cavity of the furnace body, and the shaft has venting cavity, the ventilation Several puff prots, the mixing direction and the blade of the jet direction of the puff prot and the agitating shaft are provided on chamber Mixing direction be not overlapped it is not parallel；Agitating shaft is arranged on the outer wall of the shaft, and the radial direction towards the shaft is prolonged It stretches, and multiple along the distribution of the axial outer wall of the shaft；Blade is inclined on the agitating shaft, adjacent institute to be multiple The distance between blade is stated no more than 30mm.

This drying device, when material is dried, material is added in the cavity of furnace body charging gear through feed inlet, Meanwhile shaft rotation drives the mixing component in shaft constantly to be stirred along the radial and axial of shaft to material, stirs Mixing component includes the agitating shaft being arranged on shaft outer wall, and the radial direction of agitating shaft towards shaft extends, multiple agitating shaft edges Shaft axial outer wall distribution；And multiple blades, blade tilted set is on agitating shaft.Under shaft rotation, agitating shaft With blade as shaft rotates, multiple agitating shafts and blade axially and radially material is stirred in shaft simultaneously, and And in whipping process, blade can comminuting matter, and material can be thrown in the cavity of furnace body, so that material is not only in furnace Rolling in vivo, additionally it is possible to be moved in furnace body cavity, increase the heat convection area of thermal current in material and cavity, to improve Heat exchange efficiency.Also, several puff prots are provided on the venting cavity, the jet direction of the puff prot and the agitating shaft Mixing direction and the blade mixing direction be not overlapped it is not parallel；The airintake direction of first air inlet and the spray The jet direction of port is not parallel not to be overlapped, to increase the dimension of stirring, is avoided only stirring material in one direction, be made It obtains material to be bonded together, influences the loosening degree of material；In addition, mixing component is while stirring material, additionally it is possible to by object Feed powder is broken, forms the smaller material of particle, further increases the area of material Yu hot gas heat convection, improve the drying of material Efficiency；After band material is dried, through being fallen on material-receiving device under discharge port, and it is transported away.Also, above-mentioned drying device also wraps Connecting tube is included, the venting cavity is connect by connecting tube with first gas outlet, first gas outlet and the puff prot It does not open simultaneously, so that the intracorporal gas of furnace can be by further Collection utilization.In addition, the jet direction of the puff prot 30-50 degree angle is formed with the central axes of the feed inlet, that is, the central axes of puff prot and the axis of the air inlet are linear At 30-50 degree angle, this makes the material come in from feed inlet, and the gas that can be sprayed for puff prot carries out eddy flow overturning, mentions Height stirring and drying effect.

2. circulation drier provided by the invention, blade are removably set on agitating shaft, mixing component further includes lock Tight part, for blade to be locked at the required position on agitating shaft.Blade moves on agitating shaft, in adjustment blade and furnace body Gap between wall is driven down by blade with changing blade to material stirring and crushing effect and material, moves in furnace body State, so that it is determined that material meets the drying demand of different material in the furnace intracorporal residence time.

3. circulation drier provided by the invention, multiple agitating shafts are distributed in multiple spaced peripheries of shaft On, at least one agitating shaft is distributed on each periphery of shaft.When the spindle is rotated, shaft drives on multiple peripheries Agitating shaft and blade thereon are stirred and crush to material, and the material on shaft axial direction can be by corresponding positions It sets agitating shaft and the blade stirring on the periphery of place's shaft and crushes, it is ensured that material can be by blade stirring and powder in furnace body It is broken, and the effect for stirring and crushing is more evenly, improves the effect of dry materials.

Detailed description of the invention

It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor It puts, is also possible to obtain other drawings based on these drawings.

Fig. 1 is a kind of top view of the structural representation of embodiment of the drying system provided in embodiment 1；

Fig. 2 is the structural schematic diagram of furnace body in the drying system provided in embodiment 1；

Fig. 3 is the right view of the furnace structure schematic diagram provided in Fig. 2；

Description of symbols in figure: 1- furnace body；11- feed inlet；12- discharge port；The first air inlet of 13-；The first outlet of 14- Mouthful；2- charging gear；3- material-receiving device；4- is to wind apparatus；5- shaft；6- agitating shaft；7- blade；8- locking member；9- dedusting dress It sets；The second air inlet of 91-；92- third gas outlet；10- first pipe；15- air distribution device；16- second pipe.

Specific embodiment

Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.

As long as in addition, the non-structure each other of technical characteristic involved in invention described below different embodiments It can be combined with each other at conflict.

Embodiment 1

Such as Fig. 1, the present embodiment provides a kind of drying systems, including

Furnace body 1, horizontally disposed, feed inlet 11, the discharge port 12 for being added, taking out with cavity, for material；And It is flowed into for hot gas, the first air inlet 13 of outflow, the first gas outlet 14；

Charging gear 2, for material is added in the furnace body 1；

Material-receiving device 3, for collecting the material in the furnace body 1 after drying；

Agitating device, including

Shaft 5 is threaded through in the cavity of the furnace body 1, and the shaft 5 has venting cavity, is provided on the venting cavity Several puff prots, the jet direction of the puff prot and the mixing direction of the agitating shaft 6 and the stirring side of the blade 7 Not parallel to not being overlapped, the central axes of the jet direction of the puff prot and the feed inlet 11 form 30-50 degree angle, described The airintake direction of first air inlet 13 with the jet direction of the puff prot is not parallel is not overlapped；

Connecting tube, the venting cavity are connect by connecting tube with first gas outlet 14, first gas outlet 14 and The puff prot does not open simultaneously；

Agitating shaft 6 is arranged on the outer wall of the shaft 5, and the radial direction towards the shaft 5 extends, and along institute The axial outer wall distribution for stating shaft 5 is multiple；

Blade 7 is inclined on the agitating shaft 6, the distance between adjacent described blade 7 is not more than to be multiple 30mm。

Drying device provided by the invention, including furnace body, have on furnace body feed inlet, discharge port, the first air inlet and First gas outlet；For to the charging gear that material is added in furnace body, the splicing for collecting the material in furnace body after drying to be filled It sets, agitating device, including shaft, is threaded through in the cavity of the furnace body, the shaft has venting cavity, sets on the venting cavity It is equipped with several puff prots, the stirring of the jet direction of the puff prot and the mixing direction and the blade of the agitating shaft Direction is not overlapped not parallel；Agitating shaft is arranged on the outer wall of the shaft, and the radial direction towards the shaft extends, and It is multiple along the axial outer wall distribution of the shaft；Blade is inclined on the agitating shaft, the adjacent leaf to be multiple The distance between piece is not more than 30mm.

As further preferred embodiment, blade 7 be inclined at the angle on 6 outer wall of agitating shaft be greater than 0 ° and Less than or equal to 20 °.For example, blade 7, which is tilted 1 °, 3 °, 5 °, 7 °, 10 °, 12 °, 15 °, 20 ° etc., is equiangularly arranged in agitating shaft On 6, the blade 7 being inclined on agitating shaft 6 not only plays the role of stirring action, and there are also comminuting matters.Comprehensively consider material Stirring and pulverization are arranged on agitating shaft 6 it is further preferred that blade 7 is tilted 5 ° -10 °, and blade 7 is on agitating shaft 6 Inclined angle is usually no more than 20 °, otherwise can weaken blade 7 to the mixing effect of material.

As further preferred embodiment, blade 7 is removably set on agitating shaft 6, and mixing component further includes lock Tight part 8, for blade 7 to be locked at the required position on agitating shaft 6.Blade 7 moves on agitating shaft 6, adjustment blade 7 with Gap between 1 inner wall of furnace body, to change under blade 7 drives material stirring and crushing effect and material by blade 7, Motion state in furnace body 1, so that it is determined that residence time of the material in furnace body 1, meets the drying demand of different material.

For example, some material particles are smaller, agitating shaft 6 and blade 7 primarily serve stirring action in the drying process, can be with Spacing between 1 inner wall of blade 7 and furnace body is tuned up, so that material there are more spaces in furnace during being driven by blade 7 Movement and rolling, exchange heat with the hot gas in 1 cavity of furnace body in body 1.On the contrary, needing if some material particles are big in stirring Material is crushed simultaneously, to accelerate drying efficiency, reduces residence time of the material in furnace body 1, so that it may by blade 7 with Spacing between 1 inner wall of furnace body is turned down, the crushing effect of reinforced blade 7.

As more preferably preferred embodiment, when the radius of furnace body 1 is 30-40 centimetres, by the close furnace body 1 of blade 7 Spacing between 1 inner wall of edge and furnace body of inner wall side is set as 0.5-10 cm range, such as 0.5 centimetre, 1 centimetre, 2 lis Rice, 3 centimetres, 5 centimetres, 8 centimetres, 10 centimetres etc., so that forming reserved space between 1 inner wall of the edge of blade 7 and furnace body. More preferably range is 4-5 centimetres, still, must actually be determined according to parameters such as the performance of material itself, dry requirements.

It is removably set on the preferred embodiment on agitating shaft 6 as blade 7, blade 7 is plate, and agitating shaft 6 is along axis Line opens up sliding slot on direction, and blade 7 is inserted directly into sliding slot, slides at required position to blade 7, angle needed for tilting When, directly blade 7 is locked on agitating shaft 6 with locking member 8, such as nut or pin, plug-in unit.That is, blade 7 is tiltedly mounted on In the sliding slot of agitating shaft 6.As deformation, blade 7 can also be the plate with intermediate throughholes, and the outer wall of agitating shaft 6 has outer spiral shell Line, blade 7 are set on agitating shaft 6, and fixed with locking member 8, such as nut, pin etc..Further, it is also possible to using the prior art Middle others carriage or update device, move blade 7 on agitating shaft 6, and then fixed by locking member 8.

As preferred embodiment, multiple agitating shafts 6 are distributed on multiple spaced peripheries of shaft 5, are turned At least one agitating shaft 6 is distributed on each periphery of axis 5.When shaft 5 rotates, shaft 5 is driven on multiple peripheries Agitating shaft 6 and blade 7 thereon are stirred and crush to material, and the material on 5 axial direction of shaft can be by phase It answers agitating shaft 6 and blade 7 stirring at position on the periphery of shaft 5 and crushes, it is ensured that material can be by blade in furnace body 1 7 stirrings and crushing, and the effect for stirring and crushing is more evenly, improves the effect of dry materials.

Of agitating shaft 6 is set for the number of agitating shaft 6 is set on each periphery, on preferably each periphery Number is four, and four agitating shafts 6 are located at the quartering point of the periphery, so that the material at co-located place, It is continuously agitated and is crushed by four agitating shafts 6 on the periphery of corresponding section and the blade 7 on agitating shaft 6, between stirring Every time it is shorter, increase material and hot gas contact area, further improve the efficiency that material is dried.Each circumference 6 numbers of agitating shaft on face can also be five, six, seven, eight etc., most preferably, several are stirred in addition to four Axis 6 is evenly distributed at the Along ent of the periphery.

As further preferred embodiment, multiple agitating shafts 6 are distributed in multiple spaced peripheries of shaft 5 On, the spacing for being provided with adjacent two periphery of agitating shaft 6 is preferably 5-15 centimetres, such as 5 centimetres, 6 centimetres, 7 centimetres, 7.5 centimetres, 8 centimetres, 10 centimetres, 12 centimetres, 15 centimetres etc..Optimal spacing is 7.5-10 centimetres.

As further preferred embodiment, the agitating shaft 6 on adjacent circumferential face is located on different vertical planes.This When, the material in adjacent position is stirred and is crushed by agitating shaft 6, the blade 7 on different vertical planes, adjacent material The direction being stirred is inconsistent, and the motion profile of adjacent material is also inconsistent, further such that material is in mixing in the cavity State will not be bonded together, and improve the loosening degree of material, it is easier to be carried out heat convection with hot gas, be further increased Heat exchange efficiency.

As more preferably preferred embodiment, agitating shaft 6 is four, and four agitating shafts 6 are separately positioned on four of shaft 5 On periphery, and four agitating shafts 6 are successively set in the top exterior walls in the Z-direction of shaft 5, respectively in Y direction In bottom outer wall on rear portion outer wall on the outer wall of front, in Y direction and in Z-direction.Agitating shaft 6 uses this arrangement side Formula, in 5 rotation process of shaft, the torque that top exterior walls generate shaft 5 with two agitating shafts 6 in bottom outer wall being capable of phase Mutually balance, the torque that adjacent front outer wall generates shaft 5 with two agitating shafts 6 on the outer wall of rear portion mutually balance, so that Shaft 5, agitating shaft 6 and blade 7 operate more stable, avoid shaft 5 and vibrate, and that improves drying oven uses the longevity Life.

As 6 several variant embodiments of agitating shaft, the number of agitating shaft 6 can also be 8,12,16 Etc. namely the quantity of agitating shaft 6 be 4n, wherein n >=1, every four agitating shafts 6 repeat above-mentioned arrangement mode and are arranged in shaft On 5 outer wall.

Another variant embodiment several as agitating shaft 6, the number of agitating shaft 6 can also for 5,6,7, 8 etc., multiple agitating shafts 6 are separately positioned on the different peripheries of shaft 5, and from the radial direction of shaft 5, multiple stirrings Axis 6 is distributed on the radial circumference of shaft 5, is most preferably to be located at the Along ent of 5 radial circumference of shaft, such as agitating shaft 6 is Six, six agitating shafts 6 are distributed on six peripheries, and from the radial direction of shaft 5, and six agitating shafts 6, which are located just at, to be turned At six Along ents of the periphery of axis 5, material is stirred and is crushed multi-facetedly.

In above embodiment, the shape of blade 7 can be rectangular, trapezoidal, fan-shaped, the peach heart etc. other shapes, shape Shape is not especially limited, in addition, the surface of blade 7 can be smooth plane, is also possible to the song with certain radian transition Face or the surface of other moulding are ok.

As the variant embodiment of mixing component, mixing component can also include being arranged on the axial outer wall of shaft 5 Several connecting rods, and several fins in connecting rod, arrangement side of the fin in connecting rod are set around connecting rod outer wall Formula can be rotated similar to the arrangement mode of fan blade in the prior art, fin around the axis direction of connecting rod, in turn To be stirred and crush to material.In addition, mixing component can also be that can be realized stirring and comminuting matter in the prior art Other agitating devices or grinding device.

As preferred embodiment, further includes to wind apparatus 4, be hot-blast stove to wind apparatus 4, the gas outlet of hot-blast stove is logical Cross second pipe 16 and be connected to the first air inlet 13, the hot gas of hot-blast stove is delivered in the cavity of furnace body 1, make hot gas with Material carries out direct heat convection.As deformation, can also be to wind apparatus 4 in the prior art can be by hot gas through first Air inlet 13 is delivered to the device in the cavity of furnace body 1, for example, extraneous air is thermally formed the heat of required temperature by heater Hot wind is directly pumped into the cavity of furnace body 1 by blower by wind later.

It further include air distribution device 15 as further preferred embodiment, the gas outlet of air distribution device 15 is connected to Two pipelines 16 are mixed for introducing external air into second pipe 16 with the hot gas in second pipe 16.It is mainly at this time It prevents the hot gas temperature being delivered in 1 cavity of furnace body to wind apparatus 4 excessively high, shadow is generated to furnace body 1, agitating shaft 6 and blade 7 It rings, reduces the hot gas of excessive temperature by introducing extraneous cold air in second pipe 16, form the heat of required temperature Gas.

Preferably, air distribution device 15 may include blower, extraneous air is directly pumped into second by blower according to demand In pipeline 16；As long as in the prior art can by extraneous air delivery to second pipe 16 device or equipment all may be used With.Again, it is preferred to which being arranged one in air distribution device 15 is able to detect the volume content that outside air enters in second pipe 16 Detector, in time to enter second pipe 16 in gas flow test, convenient for whether needing to open air distribution device 15.

It further include dust-extraction unit 9 as more preferably preferred embodiment, dust-extraction unit 9 includes cyclone cylinder, and cyclone cylinder has Second air inlet 91, the second gas outlet and third gas outlet 92.Wherein, the second air inlet 91 is connected to the first gas outlet 14, Second gas outlet is in communication with the outside, and third gas outlet 92 is connected to by first pipe 10 with the cavity to wind apparatus 4, for that will remove Gas after dirt is mixed with to the hot gas in wind apparatus 4, the hot gas of moisture content needed for being formed.

Specifically, material in furnace body 1 by drying after, will be in furnace body 1 and after material-heat-exchanging through the second air inlet 91 Gas introduces in cyclone cylinder；Under the action of blower, gas is spinned the movement of rising in cyclone cylinder, in uphill process, The solid particle and liquid contained in gas is got rid of on the inner wall of cyclone cylinder, under the effect of gravity, solid particle With liquid deposition in the bottom of cyclone cylinder；And get rid of solid particle, liquid a part of gas through the second gas outlet directly arrange to Outside air, another part gas are then transported in the cavity to wind apparatus 4 through third gas outlet 92, with give 4 chamber of wind apparatus Intracorporal hot gas is mixed, so that the portion gas after dedusting is recycled, reduces heat required for heating hot gas Amount.

In addition, moisture content is generally in 20%-30% in gas after dedusting, and to the moisture content of hot gas in wind apparatus 4 Almost 0%, the dedusting gas that moisture content is 20%-30% is introduced in wind apparatus 4, is mixed with dry hot gas It closes, to form moisture content as the hot gas of 6%-15%, this hot gas is introduced into the efficiency and effect in furnace body 1 with material-heat-exchanging Fruit, than being more preferable with the efficiency and effect of material-heat-exchanging in 0% dry hot gas introducing furnace body 1 by moisture content.Because of hot gas Contain a small amount of moisture in body, in specific heat capacity of the specific heat capacity that identical environment is lauched greater than air, dry same amount of material, Heat required for water is smaller, to reduce the heat of dried material needs, improves drying efficiency, but aqueous in hot gas Rate is unsuitable excessively high, and excessively high rear heat exchange efficiency can decline instead, and then, the optimum moisture content of hot gas is controlled in 6%-15%.

For charging gear 2, material-receiving device 3 in for the above embodiment.Wherein, charging gear 2 is preferably existing Batcher in technology, such as elevator, and the hopper being mounted on feed inlet 11, the feed opening of elevator is opposite or stretches Enter and is ok into hopper.Material-receiving device 3 be preferably screw conveyor perhaps belt conveyor and chain transfer or One discharging bin is set directly below discharge port 12.

As the preferred of feed inlet 11, discharge port 12, the first air inlet 13 and the first gas outlet 14 opened up on furnace body 1 Embodiment feed inlet 11 is provided on the radial side wall of furnace body 1, discharge port 12 is provided with furnace as shown in Figures 2 and 3 For body 1 in the bottom outer wall in Z-direction, the first air inlet 13 is provided with the furnace body 1 at feed inlet 11 along Z-direction On top exterior walls on, the first gas outlet 14 is provided with furnace body 11 in the top exterior walls in Z-direction, and with discharge port 12 Position is opposite.

As an improvement first rotating shaft can also be arranged, it is threaded through in the cavity of the furnace body 1, there is installation cavity, institute It states and is provided with several heating wire on the inner wall of installation cavity, the heating wire generates heat when being powered, and the first rotating shaft is Heat Conduction Material It is made；

First rotating shaft is set in the venting cavity of shaft 5, forms air cavity between first rotating shaft and shaft 5, in the shaft 5 It is provided with several puff prots.The heating wire generates heat when being powered, and the first rotating shaft is made of Heat Conduction Material, so as to benefit It is the gas heating in the venting cavity with the heating wire being located in first rotating shaft, so that heating and dry collection are one Body, first rotating shaft are arranged inside shaft, space utilization rate are improved, so that mechanism is simple.

In short, the drying system of the present embodiment, when to dry materials, first according to the performance of material, such as moisture content, The parameters such as particle size, degree of drying, to adjust the spacing between 1 inner wall of blade 7 and furnace body, blade 7 tilts on agitating shaft 6 Spacing in the angle and shaft 5 of setting between two neighboring periphery；And according in the amount of addition material, introducing furnace body 1 Hot gas amount, the degree of drying that how long can reach necessary requirement is stopped calculating material in furnace body 1, and The optimized parameter that each material is dried can be obtained by multiple test, to prepare the drying oven of relevant parameter And the drying system with the drying oven.

Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or It changes still within the protection scope of the invention.

Claims

1. a kind of circulation drier, including

Furnace body (1), horizontally disposed, feed inlet (11), the discharge port (12) for being added, taking out with cavity, for material；With And it is flowed into for hot gas, the first air inlet (13) of outflow, the first gas outlet (14)；

Charging gear (2), for addition material in the furnace body (1)；

Material-receiving device (3), for collecting the material in the furnace body (1) after drying；

Shaft (5), is threaded through in the cavity of the furnace body (1), and the shaft (5) has venting cavity, is arranged on the venting cavity There are several puff prots, the mixing direction and the blade (7) of the jet direction of the puff prot and the agitating shaft (6) Mixing direction is not overlapped not parallel, the central axes formation 30-50 degree of the jet direction of the puff prot and the feed inlet (11) Angle, the airintake direction of first air inlet (13) with the jet direction of the puff prot is not parallel is not overlapped；

Connecting tube, the venting cavity are connect by connecting tube with first gas outlet (14), first gas outlet (14) and The puff prot does not open simultaneously；

Agitating shaft (6) is arranged on the outer wall of the shaft (5), and the radial direction towards the shaft (5) extends, and along The axial outer wall distribution of the shaft (5) is multiple；

Blade (7) is inclined on the agitating shaft (6), the distance between adjacent described blade (7) is not more than to be multiple 30mm；

The blade (7) is removably set on the agitating shaft (6), and the mixing component further includes locking member (8), and being used for will The blade (7) is locked at the required position on the agitating shaft (6)；

The agitating shaft (6) is at least four, and four agitating shafts (6) are separately positioned on four circumference of the shaft (5) On face, and four agitating shafts (6) are successively set on respectively in the top exterior walls in the Z-direction of the shaft (5), Y-axis In bottom outer wall on rear portion outer wall on front outer wall on direction, in Y direction and in Z-direction.

2. circulation drier according to claim 1, it is characterised in that: the blade (7) is inclined at described stir The angle on axis (6) is mixed to be greater than 0 ° and be less than or equal to 20 °；The edge of close furnace body (1) inner wall side of the blade (7) with Spacing between furnace body (1) inner wall is 0.5-10 centimetres.

3. circulation drier according to claim 1, it is characterised in that: it is described to give wind apparatus (4) for hot-blast stove, it is described The gas outlet of hot-blast stove is connected to first air inlet (13) by second pipe (16).

4. circulation drier according to claim 3, it is characterised in that: further include air distribution device (15), the air distribution The gas outlet of device (15) is connected to the second pipe (16), for introducing external air into the second pipe (16), It is mixed with the hot gas in the second pipe (16).