CN108751660A

CN108751660A - A kind of circulation drier

Info

Publication number: CN108751660A
Application number: CN201810644932.8A
Authority: CN
Inventors: 王良源
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-01-06
Filing date: 2016-01-06
Publication date: 2018-11-06
Also published as: CN105621847A; CN108929016A; CN105621847B

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, material-receiving device for collecting the material in furnace body after drying, wind apparatus, and the agitating device for being stirred and crushing to material will be given by the first air inlet in extraneous hot gas introducing furnace body.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, the jet direction of the puff prot and the mixing direction of agitating shaft on venting cavity and the mixing direction of blade is misaligned not parallel；Hot gas is introduced through the first air inlet in furnace body cavity, shaft rotation drives the mixing component in shaft constantly to be stirred to material along the radial and axial of shaft, 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 entitled：A kind of cycle is dry Dry device, application are artificial：Wang Liangyuan, the applying date be：On January 6th, 2016.

Background technology

Sludge is the product in sewage disposal process, containing a large amount of organic matter, heavy metal and mould etc., if being not added with follow-up 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 the transmission shaft being arranged in furnace body, 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 heat convection is carried out 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, are carried out along same direction always Rolling, on the one hand can reduce the heat-transfer effect in later stage, and it is long that material is stirred interlude, cannot fully stir material It mixes；On the other hand, it for the larger material of some humidity, can cause to bond between material along same direction rolling, shadow The shatter value for ringing material, is unfavorable for heat convection, causes heat exchange efficiency low, drying effect is bad.

Invention content

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 and the mixing direction of the mixing direction of the agitating shaft and the blade do not weigh Close not parallel, the jet direction of the puff prot and the central axes formation 30-50 degree angles of the feed inlet, first air inlet The jet direction of the airintake direction and the puff prot of mouth is not parallel misaligned；

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 multiple, is inclined on the agitating shaft that 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 more 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.

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.

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 Gas port and third gas outlet；

Second air inlet is connected to first gas outlet, for the gas in furnace body 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, is used for the gas after dedusting It is mixed with to the hot gas in wind apparatus, forms the hot gas of required moisture content.

Technical solution provided by the invention, has the following 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 jet direction of the puff prot and the mixing direction of the agitating shaft and the blade are provided on chamber Mixing direction it is misaligned 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 multiple, is inclined on the agitating shaft, adjacent institute It states the distance between blade and is not more than 30mm.

This drying device, when material is dried, material is added through feed inlet in the cavity of furnace body charging gear, Meanwhile shaft rotation drives the mixing component in shaft constantly to be stirred to material along the radial and axial of shaft, stirs It includes the agitating shaft being arranged on shaft outer wall to mix component, and the radial direction of agitating shaft towards shaft extends, multiple agitating shaft edges The axial outer wall distribution of shaft；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 stove Rolling in vivo, additionally it is possible to be moved in furnace body cavity, increase the heat convection area of material and thermal current in cavity, to improve Heat exchange efficiency.Also, several puff prots are provided on the venting cavity, jet direction and the agitating shaft of the puff prot Mixing direction and the blade mixing direction it is misaligned not parallel；The airintake direction of first air inlet and the spray The jet direction of gas port is not parallel misaligned, to increase the dimension of stirring, avoids only stirring material in one direction, make 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 and hot gas heat convection, improve the drying of material Efficiency；After band material is dried, fall on material-receiving device through discharge port, and be 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 gas in furnace body can be by further Collection utilization.In addition, the jet direction of the puff prot 30-50 degree angles are 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 angles, this makes the material come in from feed inlet, can be that the gas that puff prot sprays carries out eddy flow overturning, carry 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 material stirring and crushing effect and material by blade with changing blade, is moved in furnace body State, so that it is determined that residence time of the material in furnace body, meets the drying demand of different material.

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 being located 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 evenly, improves the effect of dry materials.

Description of the drawings

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 are briefly described, it should be apparent that, in being 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, other drawings may also be obtained based on these drawings.

Fig. 1 is a kind of vertical 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；

Reference sign in figure：1- furnace bodies；11- feed inlets；12- discharge ports；The first air inlets of 13-；The first outlets of 14- Mouthful；2- charging gears；3- material-receiving devices；4- is to wind apparatus；5- shafts；6- agitating shafts；7- blades；8- locking members；9- dedustings fill It sets；The second air inlets of 91-；92- thirds gas outlet；10- first pipes；15- air distribution devices；16- second pipes.

Specific implementation mode

Technical scheme 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 The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.

As long as in addition, technical characteristic involved in invention described below different embodiments non-structure each other 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 The first air inlet 13 for enter for hot gas stream, flowing out, 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；

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 stirring side in the jet direction of the puff prot and the mixing direction of the agitating shaft 6 and the blade 7 It is described to misaligned not parallel, the jet direction of the puff prot and the central axes formation 30-50 degree angles of the feed inlet 11 The airintake direction of first air inlet 13 and the jet direction of the puff prot are not parallel misaligned；

Connecting tube, the venting cavity are connect by connecting tube with first gas outlet 14, first gas outlet 14 with 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 multiple, is inclined on the agitating shaft 6, the distance between adjacent described blade 7 is not more than 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 fill It sets, agitating device, including shaft, is threaded through in the cavity of the furnace body, the shaft has venting cavity, is set on the venting cavity It is equipped with several puff prots, the stirring in the jet direction of the puff prot and the mixing direction of the agitating shaft and the blade Direction is misaligned 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 multiple, is inclined on the agitating shaft, the adjacent leaf 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 more 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 that is inclined on agitating shaft 6 not only plays the role of stirring action and also has comminuting matter.Consider material Stirring and pulverization are arranged it is further preferred that blade 7 is tilted 5 ° -10 ° on agitating shaft 6, and blade 7 is on agitating shaft 6 Inclined angle is usually no more than 20 °, otherwise can weaken mixing effect of the blade 7 to 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 stove 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, if some material particles are big, need in stirring Material is crushed simultaneously, to accelerate drying efficiency, reduces residence time of the material in furnace body 1, so that it may with 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 ranges, 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. It more preferably ranging from 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, waits for that blade 7 slides at required position, tilts required angle 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, are used in combination locking member 8 to fix, such as nut, pin etc..Further, it is also possible to using the prior art Middle others carriage or update device, make blade 7 be moved 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 drives on multiple peripheries Agitating shaft 6 and blade 7 thereon are stirred and crush to material, and the material being located 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 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 that is provided with two adjacent peripheries 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..Best 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 movement locus 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 are generated with two agitating shafts, 6 countershaft 5 in bottom outer wall being capable of phase Mutually balance, the torque that adjacent front outer wall is generated with two agitating shafts, 6 countershaft 5 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 a variant embodiment of 6 numbers 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.

As another variant embodiment of 6 numbers of agitating shaft, the number of agitating shaft 6 can also be 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 the 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, can also be the song with certain radian transition Face or the surface of other moulding can.

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 for being arranged in connecting rod around connecting rod outer wall, arrangement side of the fin in connecting rod 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 realize 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 wind turbine by wind later.

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 wind turbine, extraneous air is directly pumped into second by wind turbine 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 the volume content that outside air enters in second pipe 16 can be detected by being arranged one in air distribution device 15 Detector, in time to enter second pipe 16 in gas flow test, convenient for whether need open air distribution device 15.

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, forms the hot gas of required moisture content.

Specifically, material in the furnace body 1 by drying after, through the second air inlet 91, will in furnace body 1 with after material-heat-exchanging Gas introduces in cyclone cylinder；Under the action of wind turbine, 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 internal face 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 to through third gas outlet 92 in the cavity to wind apparatus 4, and give wind apparatus 4 chamber Internal hot gas is mixed so that the portion gas after dedusting is recycled, and reduces the heating required heat of 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, it is interior more preferable with the efficiency and effect of material-heat-exchanging than the dry hot gas introducing furnace body 1 for being 0% by moisture content.Because of hot gas Containing a small amount of moisture in body, the specific heat capacity of water is more than the specific heat capacity of air under identical environment, when drying same amount of material, The required heat smaller of water improves drying efficiency to reduce the heat of dried material needs, 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 on feed inlet 11, the feed opening of elevator is opposite or stretches Entering into hopper can.Material-receiving device 3 be preferably screw conveyor either 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 opened on the radial side wall of furnace body 1, discharge port 12 is opened in stove as shown in Figures 2 and 3 For body 1 in the bottom outer wall in Z-direction, the first air inlet 13 is opened in the furnace body 1 at feed inlet 11 along Z-direction On top exterior walls on, the first gas outlet 14 is opened in 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 profit It is the gas heating in the venting cavity with the heating wire in first rotating shaft, so that heating and dry collection are one Body, first rotating shaft are arranged inside shaft, improve space availability ratio 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, to calculate material and stop in the furnace body 1 degree of drying of necessary requirement how long can be reached, and The optimized parameter that each material is dried can be obtained by multiple experiment, 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 enter for hot gas stream, the first air inlet (13) for flowing out, 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 jet direction of the puff prot and the mixing direction of the agitating shaft (6) and the blade (7) Mixing direction is misaligned not parallel, and the jet direction of the puff prot forms 30-50 degree with the central axes of the feed inlet (11) The jet direction of angle, the airintake direction and the puff prot of first air inlet (13) is not parallel misaligned；

Connecting tube, the venting cavity are connect by connecting tube with first gas outlet (14), first gas outlet (14) with 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 multiple, is inclined on the agitating shaft (6), the distance between adjacent described blade (7) is not more than 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 blade (7) is inclined at the angle on the agitating shaft (6) more than 0 ° and is less than or equal to 20 °；

Spacing between the edge and the furnace body (1) inner wall of close furnace body (1) inner wall side of the blade (7) is 0.5-10 Centimetre；

Described to give wind apparatus (4) for hot-blast stove, the gas outlet of the hot-blast stove is connected to described first by second pipe (16) Air inlet (13).

2. circulation drier according to claim 1, 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).