CN2454738Y

CN2454738Y - Direct-heating moving type grain dryer

Info

Publication number: CN2454738Y
Application number: CN 00261380
Authority: CN
Inventors: 孙保才; 孙知渊
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-12-12
Filing date: 2000-12-12
Publication date: 2001-10-17
Anticipated expiration: 2010-12-12

Abstract

The utility model relates to a direct-heating moving type grain dryer, which is composed of a material flowing bucket, a material heat permutoid, a material cooling sifter, and a drive control mechanism, wherein, the material heat permutoid is in an annular cylinder type structure. Three sections of heat exchange cylinder bodies and three sections of smoke gas passages are arranged at intervals, and the center is a smoke gas hearth; hot smoke gas and materials are respectively and independently closed to run, and heat is exchanged in the mode of using transfer and radiation as main parts and using convection as a subsidiary part; therefore, the utility model is more suitable for the characteristics of drying grains, the optimization design of material drying curves is realized, and the heat utilization rate is improved.

Description

The campaign-styled grain drier of directly-heated

The utility model belongs to drying plant, relates in particular to a kind of grain drier that is used for grain, food service industry oven dry.

For suitable dry amount is little, the drying of the cereal crops that the zone disperses, the applicant has applied for that on January 24th, 2000 a kind of scale Movable Grain Dryer With, the patent No. are ZL002260565.This grain drier is by the material flow bucket, heat blower, the material heat exchanger, material cooling sifter and transmission, controlling organization are formed, material heat exchanger wherein is three sections ring-type drum-type structures, three sections cylindrical shells are communicated with in order, fold to have compressed the heat exchange space, have dwindled the volume of drying machine.When dry, material and high-pressure hot wind air-flow together enter in three sections cylindrical shells, fully mix, and strengthen the convection current conduction, adopt negative pressure directly to draw, and then reach quick-drying purpose.In dry run, hot blast and material are walked along same path, and the heat exchange form is strengthened at the volley and gone into to hold the hot blast force feed based on convection current, goes out to hold negative pressure induced wind, and material separates in the cooling sifter at last with hot blast.Because air inducing can make the partial heat energy loss, so the utilization rate of heat energy and the maximization of being unrealized.

The purpose of this utility model is to provide a kind of heat energy utilization rate height, the campaign-styled grain drier of the directly-heated of obvious energy conservation.

For achieving the above object, adopt following technical scheme: the campaign-styled grain drier of directly-heated, by the material flow bucket, the material heat exchanger, material cooling sifter, transmission and controlling organization are formed, the material heat exchanger is three sections ring-type drum-type structures, in every section heat exchange cylindrical shell material is set and lifts the hopper of advancing, material advance hurricane band and material regurgitation puller, particularly the periphery of every section heat exchange cylindrical shell is provided with the exhaust gases passes of circulus, three sections ring-type exhaust gases passes and three sections heat exchange cylindrical shells are spaced, and the center of first section heat exchange cylindrical shell is the flue gas burner hearth, and the flue gas burner hearth communicates with three sections exhaust gases passes, and connect with burner and air register, the latter end exhaust gases passes connects the smoke box on material cooling sifter top.

In addition, between flue gas burner hearth and first section heat exchange cylindrical shell, be provided with the radiation interlayer.Be provided with the regulation and control air door communicates with exhaust gases passes in material heat exchanger outside.

Below in conjunction with the embodiment accompanying drawing the utility model is described in detail.

Fig. 1 is the structural representation of the campaign-styled grain drier of directly-heated.

Fig. 2 be among Fig. 1 along A-A to sectional structure chart.

By Fig. 1, Fig. 2, the structure of the external structure of the campaign-styled grain drier of directly-heated and ZL002260565 scale Movable Grain Dryer With is basic identical, it is by material flow bucket (1), and the foreign object hot blast is two to advance device (2), material heat exchanger (3), material cooling sifter (4), transmission mechanism compositions such as (5).The main distinction is in the internal structure of material heat exchanger (3), the exhaust gases passes of circulus is set in the periphery of every section heat exchange cylindrical shell, three sections ring-type exhaust gases passes and three sections heat exchange cylindrical shells are spaced, from inside to outside successively headed by the section heat exchange cylindrical shell (7), first section exhaust gases passes (8), stage casing heat exchange cylindrical shell (9), stage casing exhaust gases passes (10), latter end heat exchange cylindrical shell (11), latter end exhaust gases passes (12), the center of first section heat exchange cylindrical shell is flue gas burner hearth (6).The end of flue gas burner hearth (6) is by cross over pipe (13), (14) of circumference uniform distribution, be communicated with first section, an end of stage casing exhaust gases passes (8), (10), the cross over pipe (16) of latter end exhaust gases passes (12) top by circumference uniform distribution, (15) are communicated with first section, the other end of stage casing exhaust gases passes (8), (10).In whole material heat exchanger, flue gas burner hearth and three sections exhaust gases passes form full-closed structure, the top of flue gas burner hearth (6) is connected with burner (17), air register (18), and the end of latter end exhaust gases passes (12) communicates with the smoke box (20) on material cooling sifter (4) top.Three sections heat exchange cylindrical shells also are independent enclosed construction, first section heat exchange cylindrical shell (7) advances device (2) and is communicated with material flow bucket (1) by the foreign object hot blast is two, material promptly enters the first section heat exchange cylindrical shell (7) from material flow bucket (1) and carries out drying, enter material cooling sifter (4) from latter end heat exchange cylindrical shell (11) at last, behind three grades of coolers (19), discharge from material outlet (21).The inside of every section heat exchange cylindrical shell is provided with identical with scale Movable Grain Dryer With, has material to lift to advance hopper (22), the material hurricane band (23) of advancing, material regurgitation puller (24).

The flue gas burner hearth, three sections exhaust gases passes and three sections heat exchange cylindrical shells are by the transmission mechanism driven in synchronism, and direction shown in the arrow is the direction of motion of material heat exchanger among Fig. 2.Single line list arrow is represented the material direct of travel among Fig. 1, and the single line double-head arrow is represented the walking path of flue gas.

Because the flue gas burner hearth is the high-temperature region, in order to reach the required temperature of dry materials in the first section heat exchange cylindrical shell, between flue gas burner hearth (6) and first section heat exchange cylindrical shell (7) radiation interlayer (25) is set, radiation interlayer (25) is connected with air register (18).In order to strengthen the convection heat transfer' heat-transfer by convection effect, at the outer setting regulation and control air door (26) of material heat exchanger (3), regulation and control air doors (26) communicate with its inner exhaust gases passes.

The dry run of material is as follows: three sections ring-type drum-type heat exchange tube structures, make material under the motion state that continues, hand over by repeatedly lifting, throwing, the realization material disperses, thereby material is distributed in whole heat exchange space under motion state, makes material obtain sufficient extension at the track stroke of setting space.And the setting of three sections exhaust gases passes, then make hot flue gas follow the whole running of material all the time, the internals of material heat exchanger, all form the hot parent of conduction, radiation, add the reinforcement convection heat transfer' heat-transfer by convection effect of regulation and control air door, just can realize material under conduction, radiation, three kinds of heat energy forms of convection current, high frequency time ground heat exchange repeatedly.Material produces the high humility vapours through first section high-temperature region heat exchange, takes negative pressure directly to draw, warm area prolongation heat exchanger time and negative pressure are drawn wet in the stage casing, prolong heat exchanger time once more through the latter end low-temperature space again, and strengthen negative pressure and draw wet effect, after three grades of coolers cool off machine.Adopt section high, medium and low, cooling to handle, in motion process, strengthen first, latter end negative pressure and draw wet effect, realize the optimization of dry materials curve, realize the heat energy utilization extreme value, reached shortening drying time, again purpose of energy saving.

The utility model compared with prior art has the following advantages:

1, takes full advantage of heat energy, make the utilization rate of heat energy realize maximization.

2, the hot gas flue is arranged between the heat exchange cylindrical shell, can make hot flue gas follow whole material capable Journey, structure are more optimized rationally.

3, take conduction, radiation as main, convection current is that auxiliary form is carried out heat exchange, is more suitable in paddy The heat exchange characteristics of thing drying.

4, remove external hot air generator, dwindled machine volume, make the complete machine walking more convenient.

Claims

1, the campaign-styled grain drier of directly-heated, by the material flow bucket, the material heat exchanger, material cooling sifter, transmission and controlling organization are formed, the material heat exchanger is three sections ring-type drum-type structures, in every section heat exchange cylindrical shell material is set and lifts the hopper of advancing, material advance hurricane band and material regurgitation puller, it is characterized in that the periphery of every section heat exchange cylindrical shell is provided with the exhaust gases passes of circulus, three sections ring-type exhaust gases passes and three sections heat exchange cylindrical shells are spaced, the center of first section heat exchange cylindrical shell is the flue gas burner hearth, the flue gas burner hearth communicates with three sections exhaust gases passes, and connect with burner and air register, the latter end exhaust gases passes connects the smoke box on material cooling sifter top.

2, the campaign-styled grain drier of directly-heated as claimed in claim 1 is characterized in that between flue gas burner hearth and first section heat exchange cylindrical shell the radiation interlayer being arranged.

3,, it is characterized in that the outside of material heat exchanger has the regulation and control air door to communicate with exhaust gases passes as claim 1, the campaign-styled grain drier of 2 described directly-heateds.