CN2502219Y

CN2502219Y - Improved simple indirect hot-air drying furnace

Info

Publication number: CN2502219Y
Application number: CN 01257145
Authority: CN
Inventors: 上官廉
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-10-10
Filing date: 2001-10-10
Publication date: 2002-07-24
Anticipated expiration: 2011-10-10

Abstract

The utility model relates to an improved simple indirect hot-air drying furnace which consists of a furnace door(1), a firebox(2), a hearth(3), a furnace wall(4), a chimney(5), a spirality air channel(8) which blasts by a blower(7) is arranged in a jacket between the furnace wall and a furnace shell(6) and a water tank(10) which is arranged on the top of the entrance section of the channel(8) circling the chimney, thereby, making the channel(8) has biggest effective heat passing space; making the air flow fluently, the heat absorbing quickly and the elevated temperature grads being distributed reasonably; besides, the water tank warms-up the water by the afterheat of the chimney so as to provide the humidifying and sirocco which can be used for drying materiels. The utility model has simple structure, long air heating line and convenient maintenance, can realize the failure-free operation and is an ideally simple furnace used for producing the directly sirocco heating.

Description

Improved simple and easy indirect hot-air drying stove

Technical field: the utility model relates to drying equipment, is a kind of industrial stove and accessory indirect hot blast, that be used for drying operation that provides.

Background technology: along with the progress in epoch and the raising of environmental consciousness, directly add hot-air entrained ash or many adverse chemical materials of when oven dry for fear of fuel and pollute the material that is dried, promote and adopt indirect hot-air seasoning food, agriculture and forestry product and correlative, be subjected to extensive welcome.Therefore develop the stove and accessory simple, reliable, that indirect hot blast can be provided, become pressing for of a part of dry user.Chinese patent ZL92233580.X " simple and easy indirect hot-air drying device ", the stove and accessory that provides is to form air jacket between furnace wall and furnace shell, and in chuck, be fixed with spirality air heated passage, in spirality channel, produce moving air by the blower fan air blast, by furnace wall heat conduction heating moving air, be used to dry material simultaneously thereby produce indirect hot blast.This stove and accessory is simple, reliable, and the air temperature gradient distributes rationally, and operation principle is effective.But the burner hearth high-temperature furnace gas of this stove and accessory adds the hot-air except part is used for the furnace wall heat transfer, and another part flings chimney and discharges.In order rationally to utilize the burner hearth heat, the inventor has done some and has improved trial on above-mentioned patent basis: the finned heatsink that for example puts in spirality channel in furnace wall periphery setting, increase moving air and heat conduction fin contact area, improved heat exchanger effectiveness preferably; The row's formula tracheae that crosses is set above in burner hearth, and the row's of making formula tracheae and helical duct link, though row's formula tracheae can directly be accepted the furnace gas heating in burner hearth, make the moving air in it can improve temperature rise, but the windage that flows obviously increases, and the scaling loss of row's formula tracheae is very fast, changes inconvenience; At the roof of the furnace place firing rate that the preheating water tank can improve water is set, but this arrangement, and the part that has occupied air in the helical duct effectively is subjected to heat space, weighs the advantages and disadvantages, and gains little and lose much; Inwall is provided with refractory masses in fire box, has no doubt reduced the inwall scaling loss, but the heat conduction is too poor, is heated up in this furnace wall, place, thereby influences the continuous intensification of moving air in the air-casing.

Summary of the invention: at the deficiency of finding in above-mentioned prior art and the development, developing and a kind ofly can rationally utilize the stove and accessory combustion heat energy, and be suitable for practical, simple and reliable improved simple and easy indirect hot-air drying stove, is the utility model task.

Major technique structure of the present utility model is by fire door, combustion chamber, burner hearth, furnace wall, chimney, and spirality air duct by the blower fan air blast arranged in the chuck between furnace wall and the furnace shell, the air duct entrance is located at outside the conical top of furnace wall, outlet is located at the furnace shell bottom, and the furnace wall periphery is associated with finned heatsink and stretches to the spirality air duct, characteristics are above spirality air duct entrance, are provided with the UTILIZATION OF VESIDUAL HEAT IN water tank around the chimney that has finned heatsink, and water tank has water pipe that the trickle shower nozzle is put in spirality air duct arrival end place.

Technology constitutes and also to comprise: but be provided with demolition lining by some heat-resisting steel sheet and plate assembly units at combustion chamber inwall place.

After adopting above-mentioned technology to constitute, the positive effect that produces has: 1. this stove and accessory can suit measures to local conditions to utilize cheap waste materials such as husk, wood chip, crop cane to make fuel, after combustion chambers burn, oven wall and finned heatsink, its Temperature Distribution is bottom-up successively decreases.And around the chuck spiral passage of furnace wall periphery, by the blower fan air blast, the moving air at its entrance place just begins to accept to conduct heat from part chimney and furnace wall conical top and finned heatsink thereof to heat, on the way from the furnace wall and finned heatsink continue to conduct heat and constantly to heat up, final hot blast enters drying room oven dry material from the output of furnace shell outlet at bottom.Because spirality channel is unimpeded air channel, windage is very little on the way, under identical blower fan condition, can obtain the indirect hot blast of big air quantity, helps to quicken dried material.2. because water tank is located at the top of spirality air duct entrance, can make full use of by the outside exhaust gas discharged waste heat of chimney, comparatively reasonable in the configuration.When needs contain damp and hot wind and dry, the preheating water of water tank can be sprayed at spirality air duct arrival end place by the trickle shower nozzle, infiltrate air after, constantly the being heated gasification that heats up forms and contains damp and hot wind.3. the detachable steel plate lining of pin-connected panel is set at combustion chamber inwall place, had both helped to conduct heat, be convenient to maintain and replace after the lining scaling loss again, make this stove and accessory more become practical to the furnace wall.

Description of drawings: accompanying drawing is the signal of the utility model overall structure cutaway view.

The specific embodiment: from the visible the utility model of accompanying drawing by fire door (1), combustion chamber (2), burner hearth (3), furnace wall (4), chimney (5), and spirality air duct (8) by blower fan (7) air blast arranged in furnace wall (4) and furnace shell (6) chuck, the entrance of air duct (8) is located at outside the conical top of furnace wall, outlet (14) is located at the furnace shell bottom, furnace wall periphery and chimney (5) end Duan Jun is associated with finned heatsink (9), in the top of air duct (8) entrance and around the chimney of being with finned heatsink water tank (10) is set, water tank has water pipe trickle shower nozzle (11) to be put in the arrival end of spirality air duct (8).Obviously water tank can have water pipe to draw for life use hot water, furnace shell (6) periphery to be covered with insulation material so that be incubated in addition.

Accompanying drawing illustrates that also (2) inwall is provided with the lining (12) that the removable thermo-resistant steel plate constitutes along the combustion chamber in subsides, and it can be made of with the screw assembly unit some planes or curved plate.

Because the utility model integral body is cylindrical, blower fan (7) and water tank (10) all are arranged on high-end, consider from resistance to overturning, can be fixedly connected with ground connection steel ladder (13) at blower fan (7) support place, thereby improve integral rigidity and the maintenance of being convenient to blower fan and water tank.

Claims

1, improved simple and easy indirect hot-air drying stove is mainly by fire door (1), combustion chamber (2), burner hearth (3), furnace wall (4), chimney (5), and spirality air duct (8) by blower fan (7) air blast arranged in the chuck between furnace wall (4) and furnace shell (6), the entrance of air duct (8) is located at outside the top, furnace wall, outlet (14) is located at the furnace shell bottom, furnace wall periphery and chimney (5) end Duan Jun is associated with finned heatsink (9) and constitutes, it is characterized in that in air duct (8) entrance top, chimney around band finned heatsink (9) is provided with water tank (10), and water tank has water pipe trickle shower nozzle (11) to be put in the arrival end place of spirality air duct.

2, improved simple and easy indirect hot-air drying stove according to claim 1 is characterized in that pasting along the combustion chamber (2) inwall and is provided with sectional nave (12) by some heat-resisting steel sheet and plate assembly units.

3, improved simple and easy indirect hot-air drying stove according to claim 1 and 2 is characterized in that being fixed with ground connection steel ladder (13) at blower fan (7) support place.