CN201858845U

CN201858845U - Vertical type dryer for powdery wet material

Info

Publication number: CN201858845U
Application number: CN201020609094XU
Authority: CN
Inventors: 唐德顺
Original assignee: HENAN DEYAO MECHINERY BUILDING CO Ltd
Current assignee: HENAN DEYAO MECHINERY BUILDING CO Ltd
Priority date: 2010-11-16
Filing date: 2010-11-16
Publication date: 2011-06-08
Anticipated expiration: 2020-11-16

Abstract

The utility model discloses a vertical type dryer for powdery wet material, which comprises a vertically-arranged hollow cylinder body, the hollow cylinder body is internally provided with a hot wind passageway, the hollow cylinder body is internally and axially provided with at least two material baffle rings, a material inlet is arranged at the top of the hollow cylinder body, a tapered cylinder bottom is arranged at the bottom of the hollow cylinder body, the bottom end of the tapered cylinder bottom is provided with a material outlet, the side wall of the tapered cylinder bottom is provided with a plurality of screen holes which penetrate through the inner wall surface and the outer wall surface and used for screening the powdery wet material, a powdery material collecting groove for collecting the powdery material is arranged at the outer part of the tapered cylinder bottom in an enclosing manner, and a powdery material outlet is arranged at the bottom of the material collecting groove. The vertical type dryer is simple in structure and convenient in manufacture, and can be used for automatically screening the dried powdery material, solid drying medium particles and the undried powdery material only by the improvement on the basis of the existing large-scale solid grain vertical type dryer for drying the fuel, the raw material and the like, so that the equipment investment is reduced, the recovering cost of the powdery material is lightened, and the burden of the enterprise is reduced.

Description

A kind of powdery wet feed tower drier

Technical field

The utility model relates to a kind of drying materials device, and definite saying so relates to a kind of tower drier that is used to dry the powdery wet feed.

Background technology

Can produce a large amount of dust in thermal power generation or the manufacture of cement,, can cause great pollution environment on every side if dust directly is discharged in the atmosphere without reclaiming.Because the dust that produces in thermal power generation or the manufacture of cement has higher temperature, therefore in collection process, need the humidification of spraying water, dust is contained reclaim again after water for cooling forms wet feed, handle through drier again after the recovery.Because the very little and lighter weight of particle diameter of dust, common dryer can't be applied to the oven dry of dust.What be used at present that the dryer of dust oven dry adopts is drum-type structure, sends into vapours when dust rolls and dry in cylinder.But the technology of China's existing drum-type dust dryer is also very immature, when adopting this drying machine drying dust, dust is carried by vapours and can cause dust to fly away everywhere, environmental pollution to periphery is very big, and the manufacturing cost and use cost of this dryer is higher, the cost that makes dust reclaim is higher, is unfavorable for promoting the use of.

At present, be equipped with the tower drier of solid particles such as being used for dry fuel and raw material in thermal power plant or the cement manufacturing enterprise more, as the patent No. of applicant's earlier application is that the Chinese utility model patent specification of ZL200510017518.7 discloses a kind of tower drier, this dryer is mainly by the hollow cylindrical shell of vertical setting, thermal source that is connected with the cylindrical shell hollow bulb and material conveying mechanism are formed, the inner shaft of hollow cylindrical shell to be disposed with a plurality of collets, make and form inside and outside two concentric cavitys in the cylindrical shell, thermal source is arranged in the cavity at cylindrical shell center, when material is limited by collet when the charging aperture at cylindrical shell top enters into inner barrel and falls from the periphery of collet and the external cavity between the cylinder inboard wall, leave downward opening gap between the adjacent collet and form the hot blast import, be respectively arranged with downward-sloping striker plate to reduce the falling speed of material at the interval between corresponding each adjacent collet on the cylinder inboard wall, prolong drying time, correspondence offers air outlet on the barrel of each striker plate bottom.If can use this tower drier that the powdery wet feed is carried out drying, equipment is fully used, then help minimizing equipment input, reduce the cost recovery of granular material.But since powder have when moistening viscosity big and when drying more liquid characteristics, make this vertical drying device can't be applied to this comparatively meticulous little shape granular material of dust, otherwise when the water content of powder was big, it was sticky in easily and stops up hot-air channel and drying channel on cylinder inboard wall and the collet; The powder of oven dry is because particle diameter is very little, and it flows in drying channel everywhere, flows out hot blast import between adjacent collet or the air outlet easily, stops up hot-air channel, causes the dryer fault to use.

The utility model content

The purpose of this utility model is: provide a kind of powdery wet feed tower drier, to solve the problem that existing tower drier can not be applied to the oven dry of powdery wet feed.

The utility model powdery wet feed with the technical scheme of tower drier is: a kind of powdery wet feed tower drier, the hollow cylindrical shell that comprises vertical setting, be provided with hot-air channel in the hollow cylindrical shell, be axially arranged with plural collet in the hollow cylindrical shell, top at hollow cylindrical shell is provided with charging aperture, the bottom of hollow cylindrical shell is provided with at the bottom of the conically shaped, bottom at the bottom of conically shaped is provided with discharging opening, on the sidewall at the bottom of the described conically shaped, offer and run through the internal and external walls face, be used to screen the sieve aperture of granular material, bottom at the bottom of described conically shaped is provided with the powder material collecting tank that is used to collect granular material, and the bottom land of material collecting tank is provided with the powder mouth that gathers materials.

The outside wall surface of the cell wall of described powder material collecting tank at the bottom of the conically shaped extended and is provided with, and is and tapered sleeve structure coaxial at the bottom of the conically shaped.

The sealing of the cell wall of described powder material collecting tank and the outside wall surface at the bottom of the conically shaped is connected, the ring cavity of formation taper between the cell wall of powder material collecting tank and the outside wall surface at the bottom of the conically shaped.

Bottom at described discharging opening is provided with circulating conveyor, and this circulating conveyor is connected with described charging aperture by feeding device, is provided with the powder conveying device in the described powder mouthful bottom that gathers materials.

The utility model in use with the powdery wet feed with send into after the solid drying media particle mixes in the dryer dry; when the compound after the oven dry utilizes self gravitation to drop at the bottom of the conically shaped; dry powder comes out through the sieve aperture on the conically shaped downside wall is screened; the dry powder that sifts out is collected automatic drying and the screening that has realized compound by material collecting tank; and solid drying media particle and undried powder are sent to secondary drying; it is simple in structure; easily manufactured; can on the basis of the existing tower drier that is used for large-sized solid particles such as dry fuel and raw material, transform; lowered the input of equipment; alleviate the cost recovery of powder, reduced the burden of enterprise.

Description of drawings

Fig. 1 is the structural representation of the utility model powdery wet feed with the tower drier specific embodiment.

The specific embodiment

The specific embodiment of powdery wet feed usefulness tower drier of the present utility model as shown in Figure 1, it mainly comprises the hollow cylindrical shell 1 of vertical setting, be provided with charging aperture 2 at the top of hollow cylindrical shell 1, the inner shaft of hollow cylindrical shell 1 to be disposed with a plurality of collets 3, each collet 3 center surrounds hot-air channel, between each collet 3 and hollow cylindrical shell 1, form the drying channel of annular, leave between the two adjacent collets 3 and form the hot-air mouth that is communicated with hot-air channel and drying channel at interval, on the outer wall of the bottom of hollow cylindrical shell 1, be provided with and be communicated with hot-air channel, be used to connect the air inlet 4 of thermal source, after hot blast enters into hot-air channel by air inlet 4, by being blown into drying channel in the interval between adjacent two collets 3, the material that drying channel is crossed in convection current is dried.Flow for strengthening hot blast, improve drying efficiency, in the present embodiment, the barrel of hollow cylindrical shell 1 is a sandwich, leave between its inside and outside barrel and form the air-out passage at interval, be provided with the air outlet 6 that is communicated with the barrel interlayer at the interval between the corresponding respectively adjacent collet 3 on the inner tube wall 5, outer tube wall is provided with the suction opeing 7 that is used to connect air exhauster, suction opeing 7 connects air exhauster and by air-out passage and air outlet 6 hot blast in the drying channel is extracted out, be that hot blast flows, thereby can strengthen drying effect, improve drying efficiency.For reducing the flowing velocity of material in drying channel, above also corresponding each air outlet 6 on the inner tube wall 5, be respectively arranged with downward-sloping striker plate, make drying channel form the path of bending from top to bottom, extended in the path that material flow is crossed, thereby prolonged the flowing time of material in drying channel, reduce the translational speed of material, the time that makes material have abundance contacts with hot blast, has improved drying efficiency.At the bottom of the bottom of hollow cylindrical shell 1 is provided with conically shaped 8,8 bottom is provided with discharging opening 10 at the bottom of the conically shaped, what gather on 8 the sidewall at the bottom of the conically shaped offers the sieve aperture that runs through the internal and external walls face, 8 bottom is provided with and is used for admitting the powder material collecting tank 9 that sieves the powder that comes out from sieve aperture at the bottom of conically shaped, and the bottom of powder material collecting tank 9 is provided with the mouth 11 that gathers materials.

During use, earlier the powdery wet feed retrieved is sent in the mixer 17 with the solid drying media particle after to be unit with the volume according to the mixing ratio of 1:1 to 1:3 mix through feeding machine 16, send into by feeding device 15 in the charging aperture 2 at dryer top, the solid drying media particle is being swept along free-falling in the annular drying channel that the powdery wet feed forms by self gravitation between the inwall 5 of collet 3 and hollow cylindrical shell 1, hot blast blows out the interval between adjacent two collets 3 through air inlet 4 and hot-air channel compound is dried, suction opeing 7 connects air exhauster, hot blast is pumped out the hot blast generation is flowed from air outlet 6.Compound is stopped the reduction falling speed by the striker plate that is provided with on the hollow cylinder inboard wall 5 in dropping process, compound oven dry back by annular drying channel be pooled at the bottom of the conically shaped 8 and at the bottom of the conically shaped 8 inwall to discharging opening 10 landings, compound is in the landing process, the powder of having dried is fallen in the powder material collecting tank 9 by sieve from sieve aperture because particle diameter is minimum, flows out from the outlet 11 of gathering materials and sends into the material-gathering device through powder conveying mechanism 14; And not the powder of oven dry because on the moisture surface that is adhered to the solid drying media particle more greatly or stick into little group, can't from sieve aperture, sift out and directly be slipped in the discharging opening 10, be recycled conveying device 13 and send back in the agitating device 17 to send back in the hollow cylindrical shell 1 and carry out secondary drying by feeding device 15.

Because the granular material lighter weight after the oven dry, then taken away the formation airborne dust by air-flow easily if any air current flow, cause the pollution of air, so the cell wall of powder material collecting tank 98 outside wall surface at the bottom of the conically shaped is extended and is provided with and sealing is connected and forms the tapered sleeve structure that is located at one heart at the bottom of the conically shaped in the present embodiment.The material the most cheap, that cost is minimum of the solid drying media particle that uses in the utility model is stone, secondly also can adopt metal or glassware or other can tolerate the solid granular material of certain high temperature.

This method with the powdery wet feed with send into simultaneously after the solid drying media particle mixes in the dryer dry, the solid drying media particle can play adhesion, carry the effect that the powdery wet feed falls on the one hand, prevents that the powdery wet feed from sticking on hollow cylinder inboard wall or the collet; On the other hand, for mobile bigger powder after the drying, the solid drying media particle can also play barrier effect, prevents the mobile hot-air channel that stops up of dried powder everywhere; Simultaneously, self also can adsorb heat the solid drying media particle, not only can play oven dry and pre-heat effect to the powdery wet feed that adheres on its outer surface, and can be by collision mutually, extruding in hollow cylindrical shell, prevent that the adhesion of powdery wet feed from becoming bulk, the powdery wet feed that adhesion is bulk carries out fragmentation, improves the drying efficiency of powdery wet feed, reduces the energy resource consumption of dryer.

What adopt in the tower drier of the present utility model is to connect external thermal source by air inlet; its also can be in hollow cylindrical shell integrated installation fluidized bed furnace; utilize and self produce hot blast and dry; this all is that those skilled in the art is easy to and will expects, all within protection domain of the present utility model.

Claims

1. powdery wet feed tower drier, the hollow cylindrical shell that comprises vertical setting, be provided with hot-air channel in the hollow cylindrical shell, axial in the hollow cylindrical shell, be disposed with plural collet, top at hollow cylindrical shell is provided with charging aperture, the bottom of hollow cylindrical shell is provided with at the bottom of the conically shaped, bottom at the bottom of conically shaped is provided with discharging opening, it is characterized in that, on the sidewall at the bottom of the described conically shaped, offer and run through the internal and external walls face, be used to screen the sieve aperture of granular material, the bottom at the bottom of described conically shaped is provided with the powder material collecting tank that is used to collect granular material, and the bottom land of material collecting tank is provided with the powder mouth that gathers materials.

2. powdery wet feed tower drier according to claim 1 is characterized in that, the outside wall surface of the cell wall of described powder material collecting tank at the bottom of the conically shaped extended and be provided with, and is and tapered sleeve structure coaxial at the bottom of the conically shaped.

3. powdery wet feed tower drier according to claim 2 is characterized in that, the sealing of the cell wall of described powder material collecting tank and the outside wall surface at the bottom of the conically shaped is connected, the ring cavity of formation taper between the cell wall of powder material collecting tank and the outside wall surface at the bottom of the conically shaped.

4. according to claim 1 or 2 or 3 described powdery wet feed tower driers, it is characterized in that, bottom at described discharging opening is provided with circulating conveyor, and this circulating conveyor is connected with described charging aperture by feeding device, is provided with the powder conveying device in the described powder mouthful bottom that gathers materials.